Merge branch 'main' into yer-a-workspace-query

2023-04-14 14:00:28 +01:00
parent 70d533f073 ffa643c91b
commit 9c79799558
72 changed files with 8073 additions and 1430 deletions
--- a/extensions/ql-vscode/package-lock.json
+++ b/extensions/ql-vscode/package-lock.json
--- a/extensions/ql-vscode/package.json
+++ b/extensions/ql-vscode/package.json
@@ -1461,6 +1461,7 @@
    "fs-extra": "^11.1.1",
    "immutable": "^4.0.0",
    "js-yaml": "^4.1.0",
+    "minimatch": "^9.0.0",
    "minimist": "~1.2.6",
    "msw": "^1.2.0",
    "nanoid": "^3.2.0",
@@ -1497,7 +1498,7 @@
    "@storybook/addon-essentials": "^6.5.17-alpha.0",
    "@storybook/addon-interactions": "^6.5.17-alpha.0",
    "@storybook/addon-links": "^6.5.17-alpha.0",
-    "@storybook/builder-webpack5": "^6.5.17-alpha.0",
+    "@storybook/builder-webpack5": "^7.0.4",
    "@storybook/manager-webpack5": "^6.5.17-alpha.0",
    "@storybook/react": "^6.5.17-alpha.0",
    "@storybook/testing-library": "^0.0.13",
@@ -1531,7 +1532,7 @@
    "@types/through2": "^2.0.36",
    "@types/tmp": "^0.1.0",
    "@types/unzipper": "~0.10.1",
-    "@types/vscode": "^1.59.0",
+    "@types/vscode": "^1.67.0",
    "@types/webpack": "^5.28.0",
    "@types/webpack-env": "^1.18.0",
    "@types/xml2js": "~0.4.4",
@@ -1555,7 +1556,7 @@
    "eslint-plugin-react-hooks": "^4.6.0",
    "eslint-plugin-storybook": "^0.6.4",
    "file-loader": "^6.2.0",
-    "glob": "^9.3.2",
+    "glob": "^10.0.0",
    "gulp": "^4.0.2",
    "gulp-esbuild": "^0.10.5",
    "gulp-replace": "^1.1.3",
--- a/extensions/ql-vscode/src/common/commands.ts
+++ b/extensions/ql-vscode/src/common/commands.ts
@@ -13,16 +13,51 @@ import type {
 } from "../variant-analysis/shared/variant-analysis";

 // A command function matching the signature that VS Code calls when
-// a command on a selection is invoked.
-export type SelectionCommandFunction<Item> = (
-  singleItem: Item,
-  multiSelect: Item[],
+// a command is invoked from the title bar of a TreeView with
+// canSelectMany set to true.
+//
+// It is possible to get any combination of singleItem and multiSelect
+// to be undefined. This is because it is possible to click a title bar
+// option without interacting with any individual items first, or even
+// when there are no items present at all.
+// If both singleItem and multiSelect are defined, then singleItem will
+// be contained within multiSelect.
+export type TreeViewTitleMultiSelectionCommandFunction<Item> = (
+  singleItem: Item | undefined,
+  multiSelect: Item[] | undefined,
 ) => Promise<void>;

 // A command function matching the signature that VS Code calls when
-// a command on a selection is invoked when canSelectMany is false.
-export type SingleSelectionCommandFunction<Item> = (
+// a command is invoked from a context menu on a TreeView with
+// canSelectMany set to true.
+//
+// singleItem will always be defined and corresponds to the item that
+// was hovered or right-clicked. If precisely one item was selected then
+// multiSelect will be undefined. If more than one item is selected then
+// multiSelect will contain all selected items, including singleItem.
+export type TreeViewContextMultiSelectionCommandFunction<Item> = (
  singleItem: Item,
+  multiSelect: Item[] | undefined,
+) => Promise<void>;
+
+// A command function matching the signature that VS Code calls when
+// a command is invoked from a context menu on a TreeView with
+// canSelectMany set to false.
+//
+// It is guaranteed that precisely one item will be selected.
+export type TreeViewContextSingleSelectionCommandFunction<Item> = (
+  singleItem: Item,
+) => Promise<void>;
+
+// A command function matching the signature that VS Code calls when
+// a command is invoked from a context menu on the file explorer.
+//
+// singleItem corresponds to the item that was right-clicked.
+// multiSelect will always been defined and non-empty and contains
+// all selected items, including singleItem.
+export type ExplorerSelectionCommandFunction<Item> = (
+  singleItem: Item,
+  multiSelect: Item[],
 ) => Promise<void>;

 /**
@@ -94,7 +129,7 @@ export type LocalQueryCommands = {
  "codeQL.runQueryOnMultipleDatabasesContextEditor": (
    uri?: Uri,
  ) => Promise<void>;
-  "codeQL.runQueries": SelectionCommandFunction<Uri>;
+  "codeQL.runQueries": ExplorerSelectionCommandFunction<Uri>;
  "codeQL.quickEval": (uri: Uri) => Promise<void>;
  "codeQL.quickEvalContextEditor": (uri: Uri) => Promise<void>;
  "codeQL.codeLensQuickEval": (uri: Uri, range: Range) => Promise<void>;
@@ -119,28 +154,28 @@ export type QueryHistoryCommands = {
  "codeQLQueryHistory.sortByCount": () => Promise<void>;

  // Commands in the context menu or in the hover menu
-  "codeQLQueryHistory.openQueryTitleMenu": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.openQueryContextMenu": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.removeHistoryItemTitleMenu": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.removeHistoryItemContextMenu": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.removeHistoryItemContextInline": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.renameItem": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.compareWith": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.showEvalLog": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.showEvalLogSummary": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.showEvalLogViewer": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.showQueryLog": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.showQueryText": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.openQueryDirectory": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.cancel": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.exportResults": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.viewCsvResults": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.viewCsvAlerts": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.viewSarifAlerts": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.viewDil": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.itemClicked": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.openOnGithub": SelectionCommandFunction<QueryHistoryInfo>;
-  "codeQLQueryHistory.copyRepoList": SelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.openQueryTitleMenu": TreeViewTitleMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.openQueryContextMenu": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.removeHistoryItemTitleMenu": TreeViewTitleMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.removeHistoryItemContextMenu": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.removeHistoryItemContextInline": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.renameItem": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.compareWith": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.showEvalLog": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.showEvalLogSummary": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.showEvalLogViewer": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.showQueryLog": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.showQueryText": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.openQueryDirectory": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.cancel": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.exportResults": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.viewCsvResults": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.viewCsvAlerts": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.viewSarifAlerts": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.viewDil": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.itemClicked": TreeViewTitleMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.openOnGithub": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;
+  "codeQLQueryHistory.copyRepoList": TreeViewContextMultiSelectionCommandFunction<QueryHistoryInfo>;

  // Commands in the command palette
  "codeQL.exportSelectedVariantAnalysisResults": () => Promise<void>;
@@ -173,11 +208,11 @@ export type LocalDatabasesCommands = {
  ) => Promise<void>;

  // Database panel selection commands
-  "codeQLDatabases.removeDatabase": SelectionCommandFunction<DatabaseItem>;
-  "codeQLDatabases.upgradeDatabase": SelectionCommandFunction<DatabaseItem>;
-  "codeQLDatabases.renameDatabase": SelectionCommandFunction<DatabaseItem>;
-  "codeQLDatabases.openDatabaseFolder": SelectionCommandFunction<DatabaseItem>;
-  "codeQLDatabases.addDatabaseSource": SelectionCommandFunction<DatabaseItem>;
+  "codeQLDatabases.removeDatabase": TreeViewContextMultiSelectionCommandFunction<DatabaseItem>;
+  "codeQLDatabases.upgradeDatabase": TreeViewContextMultiSelectionCommandFunction<DatabaseItem>;
+  "codeQLDatabases.renameDatabase": TreeViewContextMultiSelectionCommandFunction<DatabaseItem>;
+  "codeQLDatabases.openDatabaseFolder": TreeViewContextMultiSelectionCommandFunction<DatabaseItem>;
+  "codeQLDatabases.addDatabaseSource": TreeViewContextMultiSelectionCommandFunction<DatabaseItem>;

  // Codespace template commands
  "codeQL.setDefaultTourDatabase": () => Promise<void>;
@@ -222,11 +257,11 @@ export type DatabasePanelCommands = {
  "codeQLVariantAnalysisRepositories.addNewList": () => Promise<void>;
  "codeQLVariantAnalysisRepositories.setupControllerRepository": () => Promise<void>;

-  "codeQLVariantAnalysisRepositories.setSelectedItem": SingleSelectionCommandFunction<DbTreeViewItem>;
-  "codeQLVariantAnalysisRepositories.setSelectedItemContextMenu": SingleSelectionCommandFunction<DbTreeViewItem>;
-  "codeQLVariantAnalysisRepositories.openOnGitHubContextMenu": SingleSelectionCommandFunction<DbTreeViewItem>;
-  "codeQLVariantAnalysisRepositories.renameItemContextMenu": SingleSelectionCommandFunction<DbTreeViewItem>;
-  "codeQLVariantAnalysisRepositories.removeItemContextMenu": SingleSelectionCommandFunction<DbTreeViewItem>;
+  "codeQLVariantAnalysisRepositories.setSelectedItem": TreeViewContextSingleSelectionCommandFunction<DbTreeViewItem>;
+  "codeQLVariantAnalysisRepositories.setSelectedItemContextMenu": TreeViewContextSingleSelectionCommandFunction<DbTreeViewItem>;
+  "codeQLVariantAnalysisRepositories.openOnGitHubContextMenu": TreeViewContextSingleSelectionCommandFunction<DbTreeViewItem>;
+  "codeQLVariantAnalysisRepositories.renameItemContextMenu": TreeViewContextSingleSelectionCommandFunction<DbTreeViewItem>;
+  "codeQLVariantAnalysisRepositories.removeItemContextMenu": TreeViewContextSingleSelectionCommandFunction<DbTreeViewItem>;
 };

 export type AstCfgCommands = {
--- a/extensions/ql-vscode/src/data-extensions-editor/data-extensions-editor-module.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/data-extensions-editor-module.ts
@@ -53,7 +53,7 @@ export class DataExtensionsEditorModule {
    return {
      "codeQL.openDataExtensionsEditor": async () =>
        withProgress(
-          async (progress) => {
+          async (progress, token) => {
            const db = this.databaseManager.currentDatabaseItem;
            if (!db) {
              void showAndLogErrorMessage("No database selected");
@@ -69,7 +69,9 @@ export class DataExtensionsEditorModule {

            const modelFile = await pickExtensionPackModelFile(
              this.cliServer,
+              db,
              progress,
+              token,
            );
            if (!modelFile) {
              return;
--- a/extensions/ql-vscode/src/data-extensions-editor/data-extensions-editor-view.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/data-extensions-editor-view.ts
@@ -14,11 +14,11 @@ import {
 import { ProgressUpdate } from "../progress";
 import { QueryRunner } from "../queryRunner";
 import {
+  showAndLogErrorMessage,
  showAndLogExceptionWithTelemetry,
-  showAndLogWarningMessage,
 } from "../helpers";
 import { extLogger } from "../common";
-import { readFile, writeFile } from "fs-extra";
+import { outputFile, readFile } from "fs-extra";
 import { load as loadYaml } from "js-yaml";
 import { DatabaseItem, DatabaseManager } from "../local-databases";
 import { CodeQLCliServer } from "../cli";
@@ -150,7 +150,7 @@ export class DataExtensionsEditorView extends AbstractWebview<
  ): Promise<void> {
    const yaml = createDataExtensionYaml(externalApiUsages, modeledMethods);

-    await writeFile(this.modelFilename, yaml);
+    await outputFile(this.modelFilename, yaml);

    void extLogger.log(`Saved data extension YAML to ${this.modelFilename}`);
  }
@@ -166,7 +166,9 @@ export class DataExtensionsEditorView extends AbstractWebview<
      const existingModeledMethods = loadDataExtensionYaml(data);

      if (!existingModeledMethods) {
-        void showAndLogWarningMessage("Failed to parse data extension YAML.");
+        void showAndLogErrorMessage(
+          `Failed to parse data extension YAML ${this.modelFilename}.`,
+        );
        return;
      }

@@ -175,7 +177,11 @@ export class DataExtensionsEditorView extends AbstractWebview<
        modeledMethods: existingModeledMethods,
      });
    } catch (e: unknown) {
-      void extLogger.log(`Unable to read data extension YAML: ${e}`);
+      void showAndLogErrorMessage(
+        `Unable to read data extension YAML ${
+          this.modelFilename
+        }: ${getErrorMessage(e)}`,
+      );
    }
  }

@@ -188,7 +194,6 @@ export class DataExtensionsEditorView extends AbstractWebview<
        queryRunner: this.queryRunner,
        databaseItem: this.databaseItem,
        queryStorageDir: this.queryStorageDir,
-        logger: extLogger,
        progress: (progressUpdate: ProgressUpdate) => {
          void this.showProgress(progressUpdate, 1500);
        },
@@ -208,7 +213,6 @@ export class DataExtensionsEditorView extends AbstractWebview<
      const bqrsChunk = await readQueryResults({
        cliServer: this.cliServer,
        bqrsPath: queryResult.outputDir.bqrsPath,
-        logger: extLogger,
      });
      if (!bqrsChunk) {
        await this.clearProgress();
@@ -233,7 +237,7 @@ export class DataExtensionsEditorView extends AbstractWebview<
      void showAndLogExceptionWithTelemetry(
        redactableError(
          asError(err),
-        )`Failed to load external APi usages: ${getErrorMessage(err)}`,
+        )`Failed to load external API usages: ${getErrorMessage(err)}`,
      );
    }
  }
--- a/extensions/ql-vscode/src/data-extensions-editor/data-schema.json
+++ b/extensions/ql-vscode/src/data-extensions-editor/data-schema.json
@@ -0,0 +1,45 @@
+{
+  "type": "object",
+  "properties": {
+    "extensions": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "required": ["addsTo", "data"],
+        "properties": {
+          "addsTo": {
+            "type": "object",
+            "required": ["pack", "extensible"],
+            "properties": {
+              "pack": {
+                "type": "string"
+              },
+              "extensible": {
+                "type": "string"
+              }
+            }
+          },
+          "data": {
+            "type": "array",
+            "items": {
+              "type": "array",
+              "items": {
+                "oneOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "boolean"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ]
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
--- a/extensions/ql-vscode/src/data-extensions-editor/extension-pack-picker.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/extension-pack-picker.ts
@@ -1,21 +1,49 @@
-import { relative, sep } from "path";
-import { window } from "vscode";
+import { join, relative, resolve, sep } from "path";
+import { outputFile, pathExists, readFile } from "fs-extra";
+import { dump as dumpYaml, load as loadYaml } from "js-yaml";
+import { minimatch } from "minimatch";
+import { CancellationToken, window } from "vscode";
 import { CodeQLCliServer } from "../cli";
-import { getOnDiskWorkspaceFolders, showAndLogErrorMessage } from "../helpers";
+import {
+  getOnDiskWorkspaceFolders,
+  getOnDiskWorkspaceFoldersObjects,
+  showAndLogErrorMessage,
+} from "../helpers";
 import { ProgressCallback } from "../progress";
+import { DatabaseItem } from "../local-databases";
+import { getQlPackPath, QLPACK_FILENAMES } from "../pure/ql";

 const maxStep = 3;

+const packNamePartRegex = /[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/;
+const packNameRegex = new RegExp(
+  `^(?:(?<scope>${packNamePartRegex.source})/)?(?<name>${packNamePartRegex.source})$`,
+);
+const packNameLength = 128;
+
 export async function pickExtensionPackModelFile(
  cliServer: Pick<CodeQLCliServer, "resolveQlpacks" | "resolveExtensions">,
+  databaseItem: Pick<DatabaseItem, "name">,
  progress: ProgressCallback,
+  token: CancellationToken,
 ): Promise<string | undefined> {
-  const extensionPackPath = await pickExtensionPack(cliServer, progress);
+  const extensionPackPath = await pickExtensionPack(
+    cliServer,
+    databaseItem,
+    progress,
+    token,
+  );
  if (!extensionPackPath) {
    return;
  }

-  const modelFile = await pickModelFile(cliServer, progress, extensionPackPath);
+  const modelFile = await pickModelFile(
+    cliServer,
+    databaseItem,
+    extensionPackPath,
+    progress,
+    token,
+  );
  if (!modelFile) {
    return;
  }
@@ -25,7 +53,9 @@ export async function pickExtensionPackModelFile(

 async function pickExtensionPack(
  cliServer: Pick<CodeQLCliServer, "resolveQlpacks">,
+  databaseItem: Pick<DatabaseItem, "name">,
  progress: ProgressCallback,
+  token: CancellationToken,
 ): Promise<string | undefined> {
  progress({
    message: "Resolving extension packs...",
@@ -36,10 +66,20 @@ async function pickExtensionPack(
  // Get all existing extension packs in the workspace
  const additionalPacks = getOnDiskWorkspaceFolders();
  const extensionPacks = await cliServer.resolveQlpacks(additionalPacks, true);
-  const options = Object.keys(extensionPacks).map((pack) => ({
-    label: pack,
-    extensionPack: pack,
-  }));
+
+  if (Object.keys(extensionPacks).length === 0) {
+    return pickNewExtensionPack(databaseItem, token);
+  }
+
+  const options: Array<{ label: string; extensionPack: string | null }> =
+    Object.keys(extensionPacks).map((pack) => ({
+      label: pack,
+      extensionPack: pack,
+    }));
+  options.push({
+    label: "Create new extension pack",
+    extensionPack: null,
+  });

  progress({
    message: "Choosing extension pack...",
@@ -47,13 +87,21 @@ async function pickExtensionPack(
    maxStep,
  });

-  const extensionPackOption = await window.showQuickPick(options, {
-    title: "Select extension pack to use",
-  });
+  const extensionPackOption = await window.showQuickPick(
+    options,
+    {
+      title: "Select extension pack to use",
+    },
+    token,
+  );
  if (!extensionPackOption) {
    return undefined;
  }

+  if (!extensionPackOption.extensionPack) {
+    return pickNewExtensionPack(databaseItem, token);
+  }
+
  const extensionPackPaths = extensionPacks[extensionPackOption.extensionPack];
  if (extensionPackPaths.length !== 1) {
    void showAndLogErrorMessage(
@@ -74,8 +122,10 @@ async function pickExtensionPack(

 async function pickModelFile(
  cliServer: Pick<CodeQLCliServer, "resolveExtensions">,
-  progress: ProgressCallback,
+  databaseItem: Pick<DatabaseItem, "name">,
  extensionPackPath: string,
+  progress: ProgressCallback,
+  token: CancellationToken,
 ): Promise<string | undefined> {
  // Find the existing model files in the extension pack
  const additionalPacks = getOnDiskWorkspaceFolders();
@@ -92,13 +142,21 @@ async function pickModelFile(
    }
  }

-  const fileOptions: Array<{ label: string; file: string }> = [];
+  if (modelFiles.size === 0) {
+    return pickNewModelFile(databaseItem, extensionPackPath, token);
+  }
+
+  const fileOptions: Array<{ label: string; file: string | null }> = [];
  for (const file of modelFiles) {
    fileOptions.push({
      label: relative(extensionPackPath, file).replaceAll(sep, "/"),
      file,
    });
  }
+  fileOptions.push({
+    label: "Create new model file",
+    file: null,
+  });

  progress({
    message: "Choosing model file...",
@@ -106,13 +164,186 @@ async function pickModelFile(
    maxStep,
  });

-  const fileOption = await window.showQuickPick(fileOptions, {
-    title: "Select model file to use",
-  });
+  const fileOption = await window.showQuickPick(
+    fileOptions,
+    {
+      title: "Select model file to use",
+    },
+    token,
+  );

  if (!fileOption) {
+    return undefined;
+  }
+
+  if (fileOption.file) {
+    return fileOption.file;
+  }
+
+  return pickNewModelFile(databaseItem, extensionPackPath, token);
+}
+
+async function pickNewExtensionPack(
+  databaseItem: Pick<DatabaseItem, "name">,
+  token: CancellationToken,
+): Promise<string | undefined> {
+  const workspaceFolders = getOnDiskWorkspaceFoldersObjects();
+  const workspaceFolderOptions = workspaceFolders.map((folder) => ({
+    label: folder.name,
+    detail: folder.uri.fsPath,
+    path: folder.uri.fsPath,
+  }));
+
+  // We're not using window.showWorkspaceFolderPick because that also includes the database source folders while
+  // we only want to include on-disk workspace folders.
+  const workspaceFolder = await window.showQuickPick(workspaceFolderOptions, {
+    title: "Select workspace folder to create extension pack in",
+  });
+  if (!workspaceFolder) {
+    return undefined;
+  }
+
+  const packName = await window.showInputBox(
+    {
+      title: "Create new extension pack",
+      prompt: "Enter name of extension pack",
+      placeHolder: `e.g. ${databaseItem.name}-extensions`,
+      validateInput: async (value: string): Promise<string | undefined> => {
+        if (!value) {
+          return "Pack name must not be empty";
+        }
+
+        if (value.length > packNameLength) {
+          return `Pack name must be no longer than ${packNameLength} characters`;
+        }
+
+        const matches = packNameRegex.exec(value);
+        if (!matches?.groups) {
+          return "Invalid package name: a pack name must contain only lowercase ASCII letters, ASCII digits, and hyphens";
+        }
+
+        const packPath = join(workspaceFolder.path, matches.groups.name);
+        if (await pathExists(packPath)) {
+          return `A pack already exists at ${packPath}`;
+        }
+
+        return undefined;
+      },
+    },
+    token,
+  );
+  if (!packName) {
+    return undefined;
+  }
+
+  const matches = packNameRegex.exec(packName);
+  if (!matches?.groups) {
    return;
  }

-  return fileOption.file;
+  const name = matches.groups.name;
+  const packPath = join(workspaceFolder.path, name);
+
+  if (await pathExists(packPath)) {
+    return undefined;
+  }
+
+  const packYamlPath = join(packPath, "codeql-pack.yml");
+
+  await outputFile(
+    packYamlPath,
+    dumpYaml({
+      name,
+      version: "0.0.0",
+      library: true,
+      extensionTargets: {
+        "codeql/java-all": "*",
+      },
+      dataExtensions: ["models/**/*.yml"],
+    }),
+  );
+
+  return packPath;
+}
+
+async function pickNewModelFile(
+  databaseItem: Pick<DatabaseItem, "name">,
+  extensionPackPath: string,
+  token: CancellationToken,
+) {
+  const qlpackPath = await getQlPackPath(extensionPackPath);
+  if (!qlpackPath) {
+    void showAndLogErrorMessage(
+      `Could not find any of ${QLPACK_FILENAMES.join(
+        ", ",
+      )} in ${extensionPackPath}`,
+    );
+    return undefined;
+  }
+
+  const qlpack = await loadYaml(await readFile(qlpackPath, "utf8"), {
+    filename: qlpackPath,
+  });
+  if (typeof qlpack !== "object" || qlpack === null) {
+    void showAndLogErrorMessage(`Could not parse ${qlpackPath}`);
+    return undefined;
+  }
+
+  const dataExtensionPatternsValue = qlpack.dataExtensions;
+  if (
+    !(
+      Array.isArray(dataExtensionPatternsValue) ||
+      typeof dataExtensionPatternsValue === "string"
+    )
+  ) {
+    void showAndLogErrorMessage(
+      `Expected 'dataExtensions' to be a string or an array in ${qlpackPath}`,
+    );
+    return undefined;
+  }
+
+  // The YAML allows either a string or an array of strings
+  const dataExtensionPatterns = Array.isArray(dataExtensionPatternsValue)
+    ? dataExtensionPatternsValue
+    : [dataExtensionPatternsValue];
+
+  const filename = await window.showInputBox(
+    {
+      title: "Enter the name of the new model file",
+      value: `models/${databaseItem.name.replaceAll("/", ".")}.model.yml`,
+      validateInput: async (value: string): Promise<string | undefined> => {
+        if (value === "") {
+          return "File name must not be empty";
+        }
+
+        const path = resolve(extensionPackPath, value);
+
+        if (await pathExists(path)) {
+          return "File already exists";
+        }
+
+        const notInExtensionPack = relative(extensionPackPath, path).startsWith(
+          "..",
+        );
+        if (notInExtensionPack) {
+          return "File must be in the extension pack";
+        }
+
+        const matchesPattern = dataExtensionPatterns.some((pattern) =>
+          minimatch(value, pattern, { matchBase: true }),
+        );
+        if (!matchesPattern) {
+          return `File must match one of the patterns in 'dataExtensions' in ${qlpackPath}`;
+        }
+
+        return undefined;
+      },
+    },
+    token,
+  );
+  if (!filename) {
+    return undefined;
+  }
+
+  return resolve(extensionPackPath, filename);
 }
--- a/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts
@@ -1,21 +1,27 @@
 import { CoreCompletedQuery, QueryRunner } from "../queryRunner";
-import { qlpackOfDatabase } from "../contextual/queryResolver";
-import { file } from "tmp-promise";
+import { dir } from "tmp-promise";
 import { writeFile } from "fs-extra";
 import { dump as dumpYaml } from "js-yaml";
-import { getOnDiskWorkspaceFolders } from "../helpers";
-import { Logger, TeeLogger } from "../common";
+import {
+  getOnDiskWorkspaceFolders,
+  showAndLogExceptionWithTelemetry,
+} from "../helpers";
+import { TeeLogger } from "../common";
 import { CancellationToken } from "vscode";
 import { CodeQLCliServer } from "../cli";
 import { DatabaseItem } from "../local-databases";
 import { ProgressCallback } from "../progress";
+import { fetchExternalApiQueries } from "./queries";
+import { QueryResultType } from "../pure/new-messages";
+import { join } from "path";
+import { redactableError } from "../pure/errors";
+import { QueryLanguage } from "../common/query-language";

 export type RunQueryOptions = {
-  cliServer: Pick<CodeQLCliServer, "resolveQlpacks" | "resolveQueriesInSuite">;
+  cliServer: Pick<CodeQLCliServer, "resolveQlpacks">;
  queryRunner: Pick<QueryRunner, "createQueryRun" | "logger">;
  databaseItem: Pick<DatabaseItem, "contents" | "databaseUri" | "language">;
  queryStorageDir: string;
-  logger: Logger;

  progress: ProgressCallback;
  token: CancellationToken;
@@ -26,54 +32,53 @@ export async function runQuery({
  queryRunner,
  databaseItem,
  queryStorageDir,
-  logger,
  progress,
  token,
 }: RunQueryOptions): Promise<CoreCompletedQuery | undefined> {
-  const qlpacks = await qlpackOfDatabase(cliServer, databaseItem);
+  // The below code is temporary to allow for rapid prototyping of the queries. Once the queries are stabilized, we will
+  // move these queries into the `github/codeql` repository and use them like any other contextual (e.g. AST) queries.
+  // This is intentionally not pretty code, as it will be removed soon.
+  // For a reference of what this should do in the future, see the previous implementation in
+  // https://github.com/github/vscode-codeql/blob/089d3566ef0bc67d9b7cc66e8fd6740b31c1c0b0/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts#L33-L72

-  const packsToSearch = [qlpacks.dbschemePack];
-  if (qlpacks.queryPack) {
-    packsToSearch.push(qlpacks.queryPack);
+  const query = fetchExternalApiQueries[databaseItem.language as QueryLanguage];
+  if (!query) {
+    void showAndLogExceptionWithTelemetry(
+      redactableError`No external API usage query found for language ${databaseItem.language}`,
+    );
+    return;
  }

-  const suiteFile = (
-    await file({
-      postfix: ".qls",
-    })
-  ).path;
-  const suiteYaml = [];
-  for (const qlpack of packsToSearch) {
-    suiteYaml.push({
-      from: qlpack,
-      queries: ".",
-      include: {
-        id: `${databaseItem.language}/telemetry/fetch-external-apis`,
-      },
-    });
+  const queryDir = (await dir({ unsafeCleanup: true })).path;
+  const queryFile = join(queryDir, "FetchExternalApis.ql");
+  await writeFile(queryFile, query.mainQuery, "utf8");
+
+  if (query.dependencies) {
+    for (const [filename, contents] of Object.entries(query.dependencies)) {
+      const dependencyFile = join(queryDir, filename);
+      await writeFile(dependencyFile, contents, "utf8");
+    }
  }
-  await writeFile(suiteFile, dumpYaml(suiteYaml), "utf8");
+
+  const syntheticQueryPack = {
+    name: "codeql/external-api-usage",
+    version: "0.0.0",
+    dependencies: {
+      [`codeql/${databaseItem.language}-all`]: "*",
+    },
+  };
+
+  const qlpackFile = join(queryDir, "codeql-pack.yml");
+  await writeFile(qlpackFile, dumpYaml(syntheticQueryPack), "utf8");

  const additionalPacks = getOnDiskWorkspaceFolders();
  const extensionPacks = Object.keys(
    await cliServer.resolveQlpacks(additionalPacks, true),
  );

-  const queries = await cliServer.resolveQueriesInSuite(
-    suiteFile,
-    getOnDiskWorkspaceFolders(),
-  );
-
-  if (queries.length !== 1) {
-    void logger.log(`Expected exactly one query, got ${queries.length}`);
-    return;
-  }
-
-  const query = queries[0];
-
  const queryRun = queryRunner.createQueryRun(
    databaseItem.databaseUri.fsPath,
-    { queryPath: query, quickEvalPosition: undefined },
+    { queryPath: queryFile, quickEvalPosition: undefined },
    false,
    getOnDiskWorkspaceFolders(),
    extensionPacks,
@@ -82,28 +87,37 @@ export async function runQuery({
    undefined,
  );

-  return queryRun.evaluate(
+  const completedQuery = await queryRun.evaluate(
    progress,
    token,
    new TeeLogger(queryRunner.logger, queryRun.outputDir.logPath),
  );
+
+  if (completedQuery.resultType !== QueryResultType.SUCCESS) {
+    void showAndLogExceptionWithTelemetry(
+      redactableError`External API usage query failed: ${
+        completedQuery.message ?? "No message"
+      }`,
+    );
+    return;
+  }
+
+  return completedQuery;
 }

 export type GetResultsOptions = {
  cliServer: Pick<CodeQLCliServer, "bqrsInfo" | "bqrsDecode">;
  bqrsPath: string;
-  logger: Logger;
 };

 export async function readQueryResults({
  cliServer,
  bqrsPath,
-  logger,
 }: GetResultsOptions) {
  const bqrsInfo = await cliServer.bqrsInfo(bqrsPath);
  if (bqrsInfo["result-sets"].length !== 1) {
-    void logger.log(
-      `Expected exactly one result set, got ${bqrsInfo["result-sets"].length}`,
+    void showAndLogExceptionWithTelemetry(
+      redactableError`Expected exactly one result set, got ${bqrsInfo["result-sets"].length}`,
    );
    return undefined;
  }
--- a/extensions/ql-vscode/src/data-extensions-editor/generate-flow-model.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/generate-flow-model.ts
@@ -4,13 +4,18 @@ import { join } from "path";
 import { QueryRunner } from "../queryRunner";
 import { CodeQLCliServer } from "../cli";
 import { TeeLogger } from "../common";
-import { extensiblePredicateDefinitions } from "./yaml";
+import { extensiblePredicateDefinitions } from "./predicates";
 import { ProgressCallback } from "../progress";
-import { getOnDiskWorkspaceFolders } from "../helpers";
+import {
+  getOnDiskWorkspaceFolders,
+  showAndLogExceptionWithTelemetry,
+} from "../helpers";
 import {
  ModeledMethodType,
  ModeledMethodWithSignature,
 } from "./modeled-method";
+import { redactableError } from "../pure/errors";
+import { QueryResultType } from "../pure/new-messages";

 type FlowModelOptions = {
  cliServer: CodeQLCliServer;
@@ -67,13 +72,21 @@ async function getModeledMethodsFromFlow(
    token,
    new TeeLogger(queryRunner.logger, queryRun.outputDir.logPath),
  );
+  if (queryResult.resultType !== QueryResultType.SUCCESS) {
+    void showAndLogExceptionWithTelemetry(
+      redactableError`Failed to run ${queryName} query: ${
+        queryResult.message ?? "No message"
+      }`,
+    );
+    return [];
+  }

  const bqrsPath = queryResult.outputDir.bqrsPath;

  const bqrsInfo = await cliServer.bqrsInfo(bqrsPath);
  if (bqrsInfo["result-sets"].length !== 1) {
-    throw new Error(
-      `Expected exactly one result set, got ${bqrsInfo["result-sets"].length}`,
+    void showAndLogExceptionWithTelemetry(
+      redactableError`Expected exactly one result set, got ${bqrsInfo["result-sets"].length} for ${queryName}`,
    );
  }

--- a/extensions/ql-vscode/src/data-extensions-editor/predicates.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/predicates.ts
@@ -0,0 +1,138 @@
+import { ExternalApiUsage } from "./external-api-usage";
+import {
+  ModeledMethod,
+  ModeledMethodType,
+  ModeledMethodWithSignature,
+} from "./modeled-method";
+
+export type ExternalApiUsageByType = {
+  externalApiUsage: ExternalApiUsage;
+  modeledMethod: ModeledMethod;
+};
+
+export type ExtensiblePredicateDefinition = {
+  extensiblePredicate: string;
+  generateMethodDefinition: (method: ExternalApiUsageByType) => Tuple[];
+  readModeledMethod: (row: Tuple[]) => ModeledMethodWithSignature;
+
+  supportedKinds?: string[];
+};
+
+type Tuple = boolean | number | string;
+
+function readRowToMethod(row: Tuple[]): string {
+  return `${row[0]}.${row[1]}#${row[3]}${row[4]}`;
+}
+
+export const extensiblePredicateDefinitions: Record<
+  Exclude<ModeledMethodType, "none">,
+  ExtensiblePredicateDefinition
+> = {
+  source: {
+    extensiblePredicate: "sourceModel",
+    // extensible predicate sourceModel(
+    //   string package, string type, boolean subtypes, string name, string signature, string ext,
+    //   string output, string kind, string provenance
+    // );
+    generateMethodDefinition: (method) => [
+      method.externalApiUsage.packageName,
+      method.externalApiUsage.typeName,
+      true,
+      method.externalApiUsage.methodName,
+      method.externalApiUsage.methodParameters,
+      "",
+      method.modeledMethod.output,
+      method.modeledMethod.kind,
+      "manual",
+    ],
+    readModeledMethod: (row) => ({
+      signature: readRowToMethod(row),
+      modeledMethod: {
+        type: "source",
+        input: "",
+        output: row[6] as string,
+        kind: row[7] as string,
+      },
+    }),
+    supportedKinds: ["remote"],
+  },
+  sink: {
+    extensiblePredicate: "sinkModel",
+    // extensible predicate sinkModel(
+    //   string package, string type, boolean subtypes, string name, string signature, string ext,
+    //   string input, string kind, string provenance
+    // );
+    generateMethodDefinition: (method) => [
+      method.externalApiUsage.packageName,
+      method.externalApiUsage.typeName,
+      true,
+      method.externalApiUsage.methodName,
+      method.externalApiUsage.methodParameters,
+      "",
+      method.modeledMethod.input,
+      method.modeledMethod.kind,
+      "manual",
+    ],
+    readModeledMethod: (row) => ({
+      signature: readRowToMethod(row),
+      modeledMethod: {
+        type: "sink",
+        input: row[6] as string,
+        output: "",
+        kind: row[7] as string,
+      },
+    }),
+    supportedKinds: ["sql", "xss", "logging"],
+  },
+  summary: {
+    extensiblePredicate: "summaryModel",
+    // extensible predicate summaryModel(
+    //   string package, string type, boolean subtypes, string name, string signature, string ext,
+    //   string input, string output, string kind, string provenance
+    // );
+    generateMethodDefinition: (method) => [
+      method.externalApiUsage.packageName,
+      method.externalApiUsage.typeName,
+      true,
+      method.externalApiUsage.methodName,
+      method.externalApiUsage.methodParameters,
+      "",
+      method.modeledMethod.input,
+      method.modeledMethod.output,
+      method.modeledMethod.kind,
+      "manual",
+    ],
+    readModeledMethod: (row) => ({
+      signature: readRowToMethod(row),
+      modeledMethod: {
+        type: "summary",
+        input: row[6] as string,
+        output: row[7] as string,
+        kind: row[8] as string,
+      },
+    }),
+    supportedKinds: ["taint", "value"],
+  },
+  neutral: {
+    extensiblePredicate: "neutralModel",
+    // extensible predicate neutralModel(
+    //   string package, string type, string name, string signature, string provenance
+    // );
+    generateMethodDefinition: (method) => [
+      method.externalApiUsage.packageName,
+      method.externalApiUsage.typeName,
+      method.externalApiUsage.methodName,
+      method.externalApiUsage.methodParameters,
+      "manual",
+    ],
+    readModeledMethod: (row) => ({
+      signature: `${row[0]}.${row[1]}#${row[2]}${row[3]}`,
+      modeledMethod: {
+        type: "neutral",
+        input: "",
+        output: "",
+        kind: "",
+      },
+    }),
+  },
+};
--- a/extensions/ql-vscode/src/data-extensions-editor/queries/index.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/queries/index.ts
@@ -0,0 +1,7 @@
+import { fetchExternalApisQuery as javaFetchExternalApisQuery } from "./java";
+import { Query } from "./query";
+import { QueryLanguage } from "../../common/query-language";
+
+export const fetchExternalApiQueries: Partial<Record<QueryLanguage, Query>> = {
+  [QueryLanguage.Java]: javaFetchExternalApisQuery,
+};
--- a/extensions/ql-vscode/src/data-extensions-editor/queries/java.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/queries/java.ts
@@ -0,0 +1,183 @@
+import { Query } from "./query";
+
+export const fetchExternalApisQuery: Query = {
+  mainQuery: `/**
+ * @name Usage of APIs coming from external libraries
+ * @description A list of 3rd party APIs used in the codebase. Excludes test and generated code.
+ * @tags telemetry
+ * @id java/telemetry/fetch-external-apis
+ */
+
+import java
+import semmle.code.java.dataflow.internal.FlowSummaryImpl as FlowSummaryImpl
+import ExternalApi
+
+private Call aUsage(ExternalApi api) {
+  result.getCallee().getSourceDeclaration() = api and
+  not result.getFile() instanceof GeneratedFile
+}
+
+private boolean isSupported(ExternalApi api) {
+  api.isSupported() and result = true
+  or
+  api = any(FlowSummaryImpl::Public::NeutralCallable nsc).asCallable() and result = true
+  or
+  not api.isSupported() and
+  not api = any(FlowSummaryImpl::Public::NeutralCallable nsc).asCallable() and
+  result = false
+}
+
+from ExternalApi api, string apiName, boolean supported, Call usage
+where
+  apiName = api.getApiName() and
+  supported = isSupported(api) and
+  usage = aUsage(api)
+select apiName, supported, usage
+`,
+  dependencies: {
+    "ExternalApi.qll": `/** Provides classes and predicates related to handling APIs from external libraries. */
+
+private import java
+private import semmle.code.java.dataflow.DataFlow
+private import semmle.code.java.dataflow.ExternalFlow
+private import semmle.code.java.dataflow.FlowSources
+private import semmle.code.java.dataflow.FlowSummary
+private import semmle.code.java.dataflow.internal.DataFlowPrivate
+private import semmle.code.java.dataflow.TaintTracking
+
+pragma[nomagic]
+private predicate isTestPackage(Package p) {
+  p.getName()
+      .matches([
+          "org.junit%", "junit.%", "org.mockito%", "org.assertj%",
+          "com.github.tomakehurst.wiremock%", "org.hamcrest%", "org.springframework.test.%",
+          "org.springframework.mock.%", "org.springframework.boot.test.%", "reactor.test%",
+          "org.xmlunit%", "org.testcontainers.%", "org.opentest4j%", "org.mockserver%",
+          "org.powermock%", "org.skyscreamer.jsonassert%", "org.rnorth.visibleassertions",
+          "org.openqa.selenium%", "com.gargoylesoftware.htmlunit%", "org.jboss.arquillian.testng%",
+          "org.testng%"
+        ])
+}
+
+/**
+ * A test library.
+ */
+private class TestLibrary extends RefType {
+  TestLibrary() { isTestPackage(this.getPackage()) }
+}
+
+private string containerAsJar(Container container) {
+  if container instanceof JarFile then result = container.getBaseName() else result = "rt.jar"
+}
+
+/** Holds if the given callable is not worth supporting. */
+private predicate isUninteresting(Callable c) {
+  c.getDeclaringType() instanceof TestLibrary or
+  c.(Constructor).isParameterless()
+}
+
+/**
+ * An external API from either the Standard Library or a 3rd party library.
+ */
+class ExternalApi extends Callable {
+  ExternalApi() { not this.fromSource() and not isUninteresting(this) }
+
+  /**
+   * Gets information about the external API in the form expected by the MaD modeling framework.
+   */
+  string getApiName() {
+    result =
+      this.getDeclaringType().getPackage() + "." + this.getDeclaringType().getSourceDeclaration() +
+        "#" + this.getName() + paramsString(this)
+  }
+
+  /**
+   * Gets the jar file containing this API. Normalizes the Java Runtime to "rt.jar" despite the presence of modules.
+   */
+  string jarContainer() { result = containerAsJar(this.getCompilationUnit().getParentContainer*()) }
+
+  /** Gets a node that is an input to a call to this API. */
+  private DataFlow::Node getAnInput() {
+    exists(Call call | call.getCallee().getSourceDeclaration() = this |
+      result.asExpr().(Argument).getCall() = call or
+      result.(ArgumentNode).getCall().asCall() = call
+    )
+  }
+
+  /** Gets a node that is an output from a call to this API. */
+  private DataFlow::Node getAnOutput() {
+    exists(Call call | call.getCallee().getSourceDeclaration() = this |
+      result.asExpr() = call or
+      result.(DataFlow::PostUpdateNode).getPreUpdateNode().(ArgumentNode).getCall().asCall() = call
+    )
+  }
+
+  /** Holds if this API has a supported summary. */
+  pragma[nomagic]
+  predicate hasSummary() {
+    this = any(SummarizedCallable sc).asCallable() or
+    TaintTracking::localAdditionalTaintStep(this.getAnInput(), _)
+  }
+
+  pragma[nomagic]
+  predicate isSource() {
+    this.getAnOutput() instanceof RemoteFlowSource or sourceNode(this.getAnOutput(), _)
+  }
+
+  /** Holds if this API is a known sink. */
+  pragma[nomagic]
+  predicate isSink() { sinkNode(this.getAnInput(), _) }
+
+  /** Holds if this API is supported by existing CodeQL libraries, that is, it is either a recognized source or sink or has a flow summary. */
+  predicate isSupported() { this.hasSummary() or this.isSource() or this.isSink() }
+}
+
+/** DEPRECATED: Alias for ExternalApi */
+deprecated class ExternalAPI = ExternalApi;
+
+/**
+ * Gets the limit for the number of results produced by a telemetry query.
+ */
+int resultLimit() { result = 1000 }
+
+/**
+ * Holds if it is relevant to count usages of \`api\`.
+ */
+signature predicate relevantApi(ExternalApi api);
+
+/**
+ * Given a predicate to count relevant API usages, this module provides a predicate
+ * for restricting the number or returned results based on a certain limit.
+ */
+module Results<relevantApi/1 getRelevantUsages> {
+  private int getUsages(string apiName) {
+    result =
+      strictcount(Call c, ExternalApi api |
+        c.getCallee().getSourceDeclaration() = api and
+        not c.getFile() instanceof GeneratedFile and
+        apiName = api.getApiName() and
+        getRelevantUsages(api)
+      )
+  }
+
+  private int getOrder(string apiInfo) {
+    apiInfo =
+      rank[result](string info, int usages |
+        usages = getUsages(info)
+      |
+        info order by usages desc, info
+      )
+  }
+
+  /**
+   * Holds if there exists an API with \`apiName\` that is being used \`usages\` times
+   * and if it is in the top results (guarded by resultLimit).
+   */
+  predicate restrict(string apiName, int usages) {
+    usages = getUsages(apiName) and
+    getOrder(apiName) <= resultLimit()
+  }
+}
+`,
+  },
+};
--- a/extensions/ql-vscode/src/data-extensions-editor/queries/query.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/queries/query.ts
@@ -0,0 +1,6 @@
+export type Query = {
+  mainQuery: string;
+  dependencies?: {
+    [filename: string]: string;
+  };
+};
--- a/extensions/ql-vscode/src/data-extensions-editor/yaml.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/yaml.ts
@@ -1,9 +1,17 @@
+import Ajv from "ajv";
+
 import { ExternalApiUsage } from "./external-api-usage";
 import {
  ModeledMethod,
  ModeledMethodType,
  ModeledMethodWithSignature,
 } from "./modeled-method";
+import { extensiblePredicateDefinitions } from "./predicates";
+
+import * as dataSchemaJson from "./data-schema.json";
+
+const ajv = new Ajv({ allErrors: true });
+const dataSchemaValidate = ajv.compile(dataSchemaJson);

 type ExternalApiUsageByType = {
  externalApiUsage: ExternalApiUsage;
@@ -16,120 +24,6 @@ type ExtensiblePredicateDefinition = {
  readModeledMethod: (row: any[]) => ModeledMethodWithSignature;
 };

-function readRowToMethod(row: any[]): string {
-  return `${row[0]}.${row[1]}#${row[3]}${row[4]}`;
-}
-
-export const extensiblePredicateDefinitions: Record<
-  Exclude<ModeledMethodType, "none">,
-  ExtensiblePredicateDefinition
-> = {
-  source: {
-    extensiblePredicate: "sourceModel",
-    // extensible predicate sourceModel(
-    //   string package, string type, boolean subtypes, string name, string signature, string ext,
-    //   string output, string kind, string provenance
-    // );
-    generateMethodDefinition: (method) => [
-      method.externalApiUsage.packageName,
-      method.externalApiUsage.typeName,
-      true,
-      method.externalApiUsage.methodName,
-      method.externalApiUsage.methodParameters,
-      "",
-      method.modeledMethod.output,
-      method.modeledMethod.kind,
-      "manual",
-    ],
-    readModeledMethod: (row) => ({
-      signature: readRowToMethod(row),
-      modeledMethod: {
-        type: "source",
-        input: "",
-        output: row[6],
-        kind: row[7],
-      },
-    }),
-  },
-  sink: {
-    extensiblePredicate: "sinkModel",
-    // extensible predicate sinkModel(
-    //   string package, string type, boolean subtypes, string name, string signature, string ext,
-    //   string input, string kind, string provenance
-    // );
-    generateMethodDefinition: (method) => [
-      method.externalApiUsage.packageName,
-      method.externalApiUsage.typeName,
-      true,
-      method.externalApiUsage.methodName,
-      method.externalApiUsage.methodParameters,
-      "",
-      method.modeledMethod.input,
-      method.modeledMethod.kind,
-      "manual",
-    ],
-    readModeledMethod: (row) => ({
-      signature: readRowToMethod(row),
-      modeledMethod: {
-        type: "sink",
-        input: row[6],
-        output: "",
-        kind: row[7],
-      },
-    }),
-  },
-  summary: {
-    extensiblePredicate: "summaryModel",
-    // extensible predicate summaryModel(
-    //   string package, string type, boolean subtypes, string name, string signature, string ext,
-    //   string input, string output, string kind, string provenance
-    // );
-    generateMethodDefinition: (method) => [
-      method.externalApiUsage.packageName,
-      method.externalApiUsage.typeName,
-      true,
-      method.externalApiUsage.methodName,
-      method.externalApiUsage.methodParameters,
-      "",
-      method.modeledMethod.input,
-      method.modeledMethod.output,
-      method.modeledMethod.kind,
-      "manual",
-    ],
-    readModeledMethod: (row) => ({
-      signature: readRowToMethod(row),
-      modeledMethod: {
-        type: "summary",
-        input: row[6],
-        output: row[7],
-        kind: row[8],
-      },
-    }),
-  },
-  neutral: {
-    extensiblePredicate: "neutralModel",
-    // extensible predicate neutralModel(
-    //   string package, string type, string name, string signature, string provenance
-    // );
-    generateMethodDefinition: (method) => [
-      method.externalApiUsage.packageName,
-      method.externalApiUsage.typeName,
-      method.externalApiUsage.methodName,
-      method.externalApiUsage.methodParameters,
-      "manual",
-    ],
-    readModeledMethod: (row) => ({
-      signature: `${row[0]}.${row[1]}#${row[2]}${row[3]}`,
-      modeledMethod: {
-        type: "neutral",
-        input: "",
-        output: "",
-        kind: "",
-      },
-    }),
-  },
-};
-
 function createDataProperty(
  methods: ExternalApiUsageByType[],
  definition: ExtensiblePredicateDefinition,
@@ -191,8 +85,14 @@ ${extensions.join("\n")}`;
 export function loadDataExtensionYaml(
  data: any,
 ): Record<string, ModeledMethod> | undefined {
-  if (typeof data !== "object") {
-    return undefined;
+  dataSchemaValidate(data);
+
+  if (dataSchemaValidate.errors) {
+    throw new Error(
+      `Invalid data extension YAML: ${dataSchemaValidate.errors
+        .map((error) => `${error.instancePath} ${error.message}`)
+        .join(", ")}`,
+    );
  }

  const extensions = data.extensions;
@@ -204,19 +104,8 @@ export function loadDataExtensionYaml(

  for (const extension of extensions) {
    const addsTo = extension.addsTo;
-    if (typeof addsTo !== "object") {
-      continue;
-    }
-
    const extensible = addsTo.extensible;
-    if (typeof extensible !== "string") {
-      continue;
-    }
-
    const data = extension.data;
-    if (!Array.isArray(data)) {
-      continue;
-    }

    const definition = Object.values(extensiblePredicateDefinitions).find(
      (definition) => definition.extensiblePredicate === extensible,
--- a/extensions/ql-vscode/src/databases/ui/db-panel.ts
+++ b/extensions/ql-vscode/src/databases/ui/db-panel.ts
@@ -34,11 +34,11 @@ import { DatabasePanelCommands } from "../../common/commands";
 import { App } from "../../common/app";

 export interface RemoteDatabaseQuickPickItem extends QuickPickItem {
-  kind: string;
+  remoteDatabaseKind: string;
 }

 export interface AddListQuickPickItem extends QuickPickItem {
-  kind: DbListKind;
+  databaseKind: DbListKind;
 }

 export class DbPanel extends DisposableObject {
@@ -113,19 +113,19 @@ export class DbPanel extends DisposableObject {
    ) {
      await this.addNewRemoteRepo(highlightedItem.parentListName);
    } else {
-      const quickPickItems = [
+      const quickPickItems: RemoteDatabaseQuickPickItem[] = [
        {
          label: "$(repo) From a GitHub repository",
          detail: "Add a variant analysis repository from GitHub",
          alwaysShow: true,
-          kind: "repo",
+          remoteDatabaseKind: "repo",
        },
        {
          label: "$(organization) All repositories of a GitHub org or owner",
          detail:
            "Add a variant analysis list of repositories from a GitHub organization/owner",
          alwaysShow: true,
-          kind: "owner",
+          remoteDatabaseKind: "owner",
        },
      ];
      const databaseKind =
@@ -142,9 +142,9 @@ export class DbPanel extends DisposableObject {
        // We set 'true' to make this a silent exception.
        throw new UserCancellationException("No repository selected", true);
      }
-      if (databaseKind.kind === "repo") {
+      if (databaseKind.remoteDatabaseKind === "repo") {
        await this.addNewRemoteRepo();
-      } else if (databaseKind.kind === "owner") {
+      } else if (databaseKind.remoteDatabaseKind === "owner") {
        await this.addNewRemoteOwner();
      }
    }
--- a/extensions/ql-vscode/src/helpers.ts
+++ b/extensions/ql-vscode/src/helpers.ts
@@ -16,6 +16,7 @@ import {
  window as Window,
  workspace,
  env,
+  WorkspaceFolder,
 } from "vscode";
 import { CodeQLCliServer, QlpacksInfo } from "./cli";
 import { UserCancellationException } from "./progress";
@@ -249,16 +250,21 @@ export async function showInformationMessageWithAction(
 }

 /** Gets all active workspace folders that are on the filesystem. */
-export function getOnDiskWorkspaceFolders() {
+export function getOnDiskWorkspaceFoldersObjects() {
  const workspaceFolders = workspace.workspaceFolders || [];
-  const diskWorkspaceFolders: string[] = [];
+  const diskWorkspaceFolders: WorkspaceFolder[] = [];
  for (const workspaceFolder of workspaceFolders) {
    if (workspaceFolder.uri.scheme === "file")
-      diskWorkspaceFolders.push(workspaceFolder.uri.fsPath);
+      diskWorkspaceFolders.push(workspaceFolder);
  }
  return diskWorkspaceFolders;
 }

+/** Gets all active workspace folders that are on the filesystem. */
+export function getOnDiskWorkspaceFolders() {
+  return getOnDiskWorkspaceFoldersObjects().map((folder) => folder.uri.fsPath);
+}
+
 /** Check if folder is already present in workspace */
 export function isFolderAlreadyInWorkspace(folderName: string) {
  const workspaceFolders = workspace.workspaceFolders || [];
--- a/extensions/ql-vscode/src/local-queries.ts
+++ b/extensions/ql-vscode/src/local-queries.ts
@@ -267,7 +267,7 @@ export class LocalQueries extends DisposableObject {
    );
  }

-  private async runQueries(_: Uri | undefined, multi: Uri[]): Promise<void> {
+  private async runQueries(_: unknown, multi: Uri[]): Promise<void> {
    await withProgress(
      async (progress, token) => {
        const maxQueryCount = MAX_QUERIES.getValue() as number;
--- a/extensions/ql-vscode/src/query-history/query-history-manager.ts
+++ b/extensions/ql-vscode/src/query-history/query-history-manager.ts
@@ -39,10 +39,7 @@ import {
  QueryStatus,
  variantAnalysisStatusToQueryStatus,
 } from "../query-status";
-import {
-  readQueryHistoryFromFile,
-  writeQueryHistoryToFile,
-} from "./store/query-history-store";
+import { readQueryHistoryFromFile, writeQueryHistoryToFile } from "./store";
 import { pathExists } from "fs-extra";
 import { CliVersionConstraint } from "../cli";
 import { HistoryItemLabelProvider } from "./history-item-label-provider";
@@ -402,8 +399,8 @@ export class QueryHistoryManager extends DisposableObject {
  }

  async handleOpenQuery(
-    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    singleItem: QueryHistoryInfo | undefined,
+    multiSelect: QueryHistoryInfo[] | undefined,
  ): Promise<void> {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -465,8 +462,8 @@ export class QueryHistoryManager extends DisposableObject {
  }

  async handleRemoveHistoryItem(
-    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[] = [],
+    singleItem: QueryHistoryInfo | undefined,
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -566,14 +563,14 @@ export class QueryHistoryManager extends DisposableObject {

  async handleRenameItem(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ): Promise<void> {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
      multiSelect,
    );

-    if (!this.assertSingleQuery(finalMultiSelect)) {
+    if (!this.assertSingleQuery(finalMultiSelect) || !finalSingleItem) {
      return;
    }

@@ -595,7 +592,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleCompareWith(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -633,8 +630,8 @@ export class QueryHistoryManager extends DisposableObject {
  }

  async handleItemClicked(
-    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[] = [],
+    singleItem: QueryHistoryInfo | undefined,
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -668,7 +665,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleShowQueryLog(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    // Local queries only
    if (!this.assertSingleQuery(multiSelect) || singleItem?.t !== "local") {
@@ -709,7 +706,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleOpenQueryDirectory(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -783,7 +780,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleShowEvalLog(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -811,7 +808,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleShowEvalLogSummary(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -849,7 +846,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleShowEvalLogViewer(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -889,7 +886,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleCancel(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -954,7 +951,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleViewSarifAlerts(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -988,7 +985,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleViewCsvResults(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1016,7 +1013,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleViewCsvAlerts(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1044,7 +1041,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleViewDil(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1071,7 +1068,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleOpenOnGithub(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1096,7 +1093,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleCopyRepoList(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ) {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1120,7 +1117,7 @@ export class QueryHistoryManager extends DisposableObject {

  async handleExportResults(
    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    multiSelect: QueryHistoryInfo[] | undefined,
  ): Promise<void> {
    const { finalSingleItem, finalMultiSelect } = this.determineSelection(
      singleItem,
@@ -1295,10 +1292,10 @@ export class QueryHistoryManager extends DisposableObject {
   * @param multiSelect a multi-select or undefined if no items are selected
   */
  private determineSelection(
-    singleItem: QueryHistoryInfo,
-    multiSelect: QueryHistoryInfo[],
+    singleItem: QueryHistoryInfo | undefined,
+    multiSelect: QueryHistoryInfo[] | undefined,
  ): {
-    finalSingleItem: QueryHistoryInfo;
+    finalSingleItem: QueryHistoryInfo | undefined;
    finalMultiSelect: QueryHistoryInfo[];
  } {
    if (!singleItem && !multiSelect?.[0]) {
@@ -1325,7 +1322,7 @@ export class QueryHistoryManager extends DisposableObject {
    }
    return {
      finalSingleItem: singleItem,
-      finalMultiSelect: multiSelect,
+      finalMultiSelect: multiSelect || [],
    };
  }

--- a/extensions/ql-vscode/src/query-history/store/data-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/data-mapper.ts
@@ -1,105 +0,0 @@
-import {
-  LocalQueryInfo,
-  CompletedQueryInfo,
-  InitialQueryInfo,
-} from "../../query-results";
-import { QueryEvaluationInfo } from "../../run-queries-shared";
-import { QueryHistoryInfo } from "../query-history-info";
-import { VariantAnalysisHistoryItem } from "../variant-analysis-history-item";
-import {
-  CompletedQueryInfoData,
-  QueryEvaluationInfoData,
-  InitialQueryInfoData,
-  LocalQueryDataItem,
-} from "./local-query-data-item";
-import { QueryHistoryDataItem } from "./query-history-data";
-
-// Maps Query History Data Models to Domain Models
-
-export function mapQueryHistoryToDomainModels(
-  queries: QueryHistoryDataItem[],
-): QueryHistoryInfo[] {
-  return queries.map((d) => {
-    if (d.t === "variant-analysis") {
-      const query: VariantAnalysisHistoryItem = d;
-      return query;
-    } else if (d.t === "local") {
-      return mapLocalQueryDataItemToDomainModel(d);
-    }
-
-    throw Error(
-      `Unexpected or corrupted query history file. Unknown query history item: ${JSON.stringify(
-        d,
-      )}`,
-    );
-  });
-}
-
-function mapLocalQueryDataItemToDomainModel(
-  localQuery: LocalQueryDataItem,
-): LocalQueryInfo {
-  return new LocalQueryInfo(
-    mapInitialQueryInfoDataToDomainModel(localQuery.initialInfo),
-    undefined,
-    localQuery.failureReason,
-    localQuery.completedQuery &&
-      mapCompletedQueryInfoDataToDomainModel(localQuery.completedQuery),
-    localQuery.evalLogLocation,
-    localQuery.evalLogSummaryLocation,
-    localQuery.jsonEvalLogSummaryLocation,
-    localQuery.evalLogSummarySymbolsLocation,
-  );
-}
-
-function mapCompletedQueryInfoDataToDomainModel(
-  completedQuery: CompletedQueryInfoData,
-): CompletedQueryInfo {
-  return new CompletedQueryInfo(
-    mapQueryEvaluationInfoDataToDomainModel(completedQuery.query),
-    {
-      runId: completedQuery.result.runId,
-      queryId: completedQuery.result.queryId,
-      resultType: completedQuery.result.resultType,
-      evaluationTime: completedQuery.result.evaluationTime,
-      message: completedQuery.result.message,
-      logFileLocation: completedQuery.result.logFileLocation,
-    },
-    completedQuery.logFileLocation,
-    completedQuery.successful ?? completedQuery.sucessful,
-    completedQuery.message,
-    completedQuery.interpretedResultsSortState,
-    completedQuery.resultCount,
-    completedQuery.sortedResultsInfo,
-  );
-}
-
-function mapInitialQueryInfoDataToDomainModel(
-  initialInfo: InitialQueryInfoData,
-): InitialQueryInfo {
-  return {
-    userSpecifiedLabel: initialInfo.userSpecifiedLabel,
-    queryText: initialInfo.queryText,
-    isQuickQuery: initialInfo.isQuickQuery,
-    isQuickEval: initialInfo.isQuickEval,
-    quickEvalPosition: initialInfo.quickEvalPosition,
-    queryPath: initialInfo.queryPath,
-    databaseInfo: {
-      databaseUri: initialInfo.databaseInfo.databaseUri,
-      name: initialInfo.databaseInfo.name,
-    },
-    start: new Date(initialInfo.start),
-    id: initialInfo.id,
-  };
-}
-
-function mapQueryEvaluationInfoDataToDomainModel(
-  evaluationInfo: QueryEvaluationInfoData,
-): QueryEvaluationInfo {
-  return new QueryEvaluationInfo(
-    evaluationInfo.querySaveDir,
-    evaluationInfo.dbItemPath,
-    evaluationInfo.databaseHasMetadataFile,
-    evaluationInfo.quickEvalPosition,
-    evaluationInfo.metadata,
-  );
-}
--- a/extensions/ql-vscode/src/query-history/store/domain-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/domain-mapper.ts
@@ -1,90 +0,0 @@
-import { assertNever } from "../../pure/helpers-pure";
-import { LocalQueryInfo, InitialQueryInfo } from "../../query-results";
-import { QueryEvaluationInfo } from "../../run-queries-shared";
-import { QueryHistoryInfo } from "../query-history-info";
-import {
-  LocalQueryDataItem,
-  InitialQueryInfoData,
-  QueryEvaluationInfoData,
-} from "./local-query-data-item";
-import { QueryHistoryDataItem } from "./query-history-data";
-import { VariantAnalysisDataItem } from "./variant-analysis-data-item";
-
-// Maps Query History Domain Models to Data Models
-
-export function mapQueryHistoryToDataModels(
-  queries: QueryHistoryInfo[],
-): QueryHistoryDataItem[] {
-  return queries.map((q) => {
-    if (q.t === "variant-analysis") {
-      const query: VariantAnalysisDataItem = q;
-      return query;
-    } else if (q.t === "local") {
-      return mapLocalQueryInfoToDataModel(q);
-    } else {
-      assertNever(q);
-    }
-  });
-}
-
-function mapLocalQueryInfoToDataModel(
-  query: LocalQueryInfo,
-): LocalQueryDataItem {
-  return {
-    initialInfo: mapInitialQueryInfoToDataModel(query.initialInfo),
-    t: "local",
-    evalLogLocation: query.evalLogLocation,
-    evalLogSummaryLocation: query.evalLogSummaryLocation,
-    jsonEvalLogSummaryLocation: query.jsonEvalLogSummaryLocation,
-    evalLogSummarySymbolsLocation: query.evalLogSummarySymbolsLocation,
-    failureReason: query.failureReason,
-    completedQuery: query.completedQuery && {
-      query: mapQueryEvaluationInfoToDataModel(query.completedQuery.query),
-      result: {
-        runId: query.completedQuery.result.runId,
-        queryId: query.completedQuery.result.queryId,
-        resultType: query.completedQuery.result.resultType,
-        evaluationTime: query.completedQuery.result.evaluationTime,
-        message: query.completedQuery.result.message,
-        logFileLocation: query.completedQuery.result.logFileLocation,
-      },
-      logFileLocation: query.completedQuery.logFileLocation,
-      successful: query.completedQuery.successful,
-      message: query.completedQuery.message,
-      resultCount: query.completedQuery.resultCount,
-      sortedResultsInfo: query.completedQuery.sortedResultsInfo,
-    },
-  };
-}
-
-function mapInitialQueryInfoToDataModel(
-  localQueryInitialInfo: InitialQueryInfo,
-): InitialQueryInfoData {
-  return {
-    userSpecifiedLabel: localQueryInitialInfo.userSpecifiedLabel,
-    queryText: localQueryInitialInfo.queryText,
-    isQuickQuery: localQueryInitialInfo.isQuickQuery,
-    isQuickEval: localQueryInitialInfo.isQuickEval,
-    quickEvalPosition: localQueryInitialInfo.quickEvalPosition,
-    queryPath: localQueryInitialInfo.queryPath,
-    databaseInfo: {
-      databaseUri: localQueryInitialInfo.databaseInfo.databaseUri,
-      name: localQueryInitialInfo.databaseInfo.name,
-    },
-    start: localQueryInitialInfo.start,
-    id: localQueryInitialInfo.id,
-  };
-}
-
-function mapQueryEvaluationInfoToDataModel(
-  queryEvaluationInfo: QueryEvaluationInfo,
-): QueryEvaluationInfoData {
-  return {
-    querySaveDir: queryEvaluationInfo.querySaveDir,
-    dbItemPath: queryEvaluationInfo.dbItemPath,
-    databaseHasMetadataFile: queryEvaluationInfo.databaseHasMetadataFile,
-    quickEvalPosition: queryEvaluationInfo.quickEvalPosition,
-    metadata: queryEvaluationInfo.metadata,
-    resultsPaths: queryEvaluationInfo.resultsPaths,
-  };
-}
--- a/extensions/ql-vscode/src/query-history/store/index.ts
+++ b/extensions/ql-vscode/src/query-history/store/index.ts
@@ -0,0 +1 @@
+export * from "./query-history-store";
--- a/extensions/ql-vscode/src/query-history/store/local-query-data-item.ts
+++ b/extensions/ql-vscode/src/query-history/store/local-query-data-item.ts
@@ -1,100 +0,0 @@
-export interface LocalQueryDataItem {
-  initialInfo: InitialQueryInfoData;
-  t: "local";
-  evalLogLocation?: string;
-  evalLogSummaryLocation?: string;
-  jsonEvalLogSummaryLocation?: string;
-  evalLogSummarySymbolsLocation?: string;
-  completedQuery?: CompletedQueryInfoData;
-  failureReason?: string;
-}
-
-export interface InitialQueryInfoData {
-  userSpecifiedLabel?: string;
-  queryText: string;
-  isQuickQuery: boolean;
-  isQuickEval: boolean;
-  quickEvalPosition?: PositionData;
-  queryPath: string;
-  databaseInfo: DatabaseInfoData;
-  start: Date;
-  id: string;
-}
-
-interface DatabaseInfoData {
-  name: string;
-  databaseUri: string;
-}
-
-interface PositionData {
-  line: number;
-  column: number;
-  endLine: number;
-  endColumn: number;
-  fileName: string;
-}
-
-export interface CompletedQueryInfoData {
-  query: QueryEvaluationInfoData;
-  message?: string;
-  successful?: boolean;
-
-  // There once was a typo in the data model, which is why we need to support both
-  sucessful?: boolean;
-  result: EvaluationResultData;
-  logFileLocation?: string;
-  resultCount: number;
-  sortedResultsInfo: Record<string, SortedResultSetInfo>;
-  interpretedResultsSortState?: InterpretedResultsSortState;
-}
-
-interface InterpretedResultsSortState {
-  sortBy: InterpretedResultsSortColumn;
-  sortDirection: SortDirection;
-}
-
-type InterpretedResultsSortColumn = "alert-message";
-
-interface SortedResultSetInfo {
-  resultsPath: string;
-  sortState: RawResultsSortState;
-}
-
-interface RawResultsSortState {
-  columnIndex: number;
-  sortDirection: SortDirection;
-}
-
-enum SortDirection {
-  asc,
-  desc,
-}
-
-interface EvaluationResultData {
-  runId: number;
-  queryId: number;
-  resultType: number;
-  evaluationTime: number;
-  message?: string;
-  logFileLocation?: string;
-}
-
-export interface QueryEvaluationInfoData {
-  querySaveDir: string;
-  dbItemPath: string;
-  databaseHasMetadataFile: boolean;
-  quickEvalPosition?: PositionData;
-  metadata?: QueryMetadataData;
-  resultsPaths: {
-    resultsPath: string;
-    interpretedResultsPath: string;
-  };
-}
-
-interface QueryMetadataData {
-  name?: string;
-  description?: string;
-  id?: string;
-  kind?: string;
-  scored?: string;
-}
--- a/extensions/ql-vscode/src/query-history/store/query-history-data.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-data.ts
@@ -1,14 +0,0 @@
-// Contains models and consts for the data we want to store in the query history store.
-// Changes to these models should be done carefully and account for backwards compatibility of data.
-
-import { LocalQueryDataItem } from "./local-query-data-item";
-import { VariantAnalysisDataItem } from "./variant-analysis-data-item";
-
-export const ALLOWED_QUERY_HISTORY_VERSIONS = [1, 2];
-
-export interface QueryHistoryData {
-  version: number;
-  queries: QueryHistoryDataItem[];
-}
-
-export type QueryHistoryDataItem = LocalQueryDataItem | VariantAnalysisDataItem;
--- a/extensions/ql-vscode/src/query-history/store/query-history-domain-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-domain-mapper.ts
@@ -0,0 +1,19 @@
+import { assertNever } from "../../pure/helpers-pure";
+import { QueryHistoryInfo } from "../query-history-info";
+import { mapLocalQueryInfoToDto } from "./query-history-local-query-domain-mapper";
+import { QueryHistoryItemDto } from "./query-history-dto";
+import { mapQueryHistoryVariantAnalysisToDto } from "./query-history-variant-analysis-domain-mapper";
+
+export function mapQueryHistoryToDto(
+  queries: QueryHistoryInfo[],
+): QueryHistoryItemDto[] {
+  return queries.map((q) => {
+    if (q.t === "variant-analysis") {
+      return mapQueryHistoryVariantAnalysisToDto(q);
+    } else if (q.t === "local") {
+      return mapLocalQueryInfoToDto(q);
+    } else {
+      assertNever(q);
+    }
+  });
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-dto-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-dto-mapper.ts
@@ -0,0 +1,22 @@
+import { QueryHistoryInfo } from "../query-history-info";
+import { QueryHistoryItemDto } from "./query-history-dto";
+import { mapQueryHistoryVariantAnalysisToDomainModel } from "./query-history-variant-analysis-dto-mapper";
+import { mapLocalQueryItemToDomainModel } from "./query-history-local-query-dto-mapper";
+
+export function mapQueryHistoryToDomainModel(
+  queries: QueryHistoryItemDto[],
+): QueryHistoryInfo[] {
+  return queries.map((d) => {
+    if (d.t === "variant-analysis") {
+      return mapQueryHistoryVariantAnalysisToDomainModel(d);
+    } else if (d.t === "local") {
+      return mapLocalQueryItemToDomainModel(d);
+    }
+
+    throw Error(
+      `Unexpected or corrupted query history file. Unknown query history item: ${JSON.stringify(
+        d,
+      )}`,
+    );
+  });
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-dto.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-dto.ts
@@ -0,0 +1,14 @@
+// Contains models and consts for the data we want to store in the query history store.
+// Changes to these models should be done carefully and account for backwards compatibility of data.
+
+import { QueryHistoryLocalQueryDto } from "./query-history-local-query-dto";
+import { QueryHistoryVariantAnalysisDto } from "./query-history-variant-analysis-dto";
+
+export interface QueryHistoryDto {
+  version: number;
+  queries: QueryHistoryItemDto[];
+}
+
+export type QueryHistoryItemDto =
+  | QueryHistoryLocalQueryDto
+  | QueryHistoryVariantAnalysisDto;
--- a/extensions/ql-vscode/src/query-history/store/query-history-local-query-domain-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-local-query-domain-mapper.ts
@@ -0,0 +1,121 @@
+import {
+  LocalQueryInfo,
+  InitialQueryInfo,
+  CompletedQueryInfo,
+} from "../../query-results";
+import { QueryEvaluationInfo } from "../../run-queries-shared";
+import {
+  QueryHistoryLocalQueryDto,
+  InitialQueryInfoDto,
+  QueryEvaluationInfoDto,
+  CompletedQueryInfoDto,
+  SortedResultSetInfoDto,
+  SortDirectionDto,
+} from "./query-history-local-query-dto";
+import {
+  RawResultsSortState,
+  SortDirection,
+  SortedResultSetInfo,
+} from "../../pure/interface-types";
+
+export function mapLocalQueryInfoToDto(
+  query: LocalQueryInfo,
+): QueryHistoryLocalQueryDto {
+  return {
+    initialInfo: mapInitialQueryInfoToDto(query.initialInfo),
+    t: "local",
+    evalLogLocation: query.evalLogLocation,
+    evalLogSummaryLocation: query.evalLogSummaryLocation,
+    jsonEvalLogSummaryLocation: query.jsonEvalLogSummaryLocation,
+    evalLogSummarySymbolsLocation: query.evalLogSummarySymbolsLocation,
+    failureReason: query.failureReason,
+    completedQuery:
+      query.completedQuery && mapCompletedQueryToDto(query.completedQuery),
+  };
+}
+
+function mapCompletedQueryToDto(
+  query: CompletedQueryInfo,
+): CompletedQueryInfoDto {
+  const sortedResults = Object.fromEntries(
+    Object.entries(query.sortedResultsInfo).map(([key, value]) => {
+      return [key, mapSortedResultSetInfoToDto(value)];
+    }),
+  );
+
+  return {
+    query: mapQueryEvaluationInfoToDto(query.query),
+    result: {
+      runId: query.result.runId,
+      queryId: query.result.queryId,
+      resultType: query.result.resultType,
+      evaluationTime: query.result.evaluationTime,
+      message: query.result.message,
+      logFileLocation: query.result.logFileLocation,
+    },
+    logFileLocation: query.logFileLocation,
+    successful: query.successful,
+    message: query.message,
+    resultCount: query.resultCount,
+    sortedResultsInfo: sortedResults,
+  };
+}
+
+function mapSortDirectionToDto(sortDirection: SortDirection): SortDirectionDto {
+  switch (sortDirection) {
+    case SortDirection.asc:
+      return SortDirectionDto.asc;
+    case SortDirection.desc:
+      return SortDirectionDto.desc;
+  }
+}
+
+function mapRawResultsSortStateToDto(
+  sortState: RawResultsSortState,
+): SortedResultSetInfoDto["sortState"] {
+  return {
+    columnIndex: sortState.columnIndex,
+    sortDirection: mapSortDirectionToDto(sortState.sortDirection),
+  };
+}
+
+function mapSortedResultSetInfoToDto(
+  resultSet: SortedResultSetInfo,
+): SortedResultSetInfoDto {
+  return {
+    resultsPath: resultSet.resultsPath,
+    sortState: mapRawResultsSortStateToDto(resultSet.sortState),
+  };
+}
+
+function mapInitialQueryInfoToDto(
+  localQueryInitialInfo: InitialQueryInfo,
+): InitialQueryInfoDto {
+  return {
+    userSpecifiedLabel: localQueryInitialInfo.userSpecifiedLabel,
+    queryText: localQueryInitialInfo.queryText,
+    isQuickQuery: localQueryInitialInfo.isQuickQuery,
+    isQuickEval: localQueryInitialInfo.isQuickEval,
+    quickEvalPosition: localQueryInitialInfo.quickEvalPosition,
+    queryPath: localQueryInitialInfo.queryPath,
+    databaseInfo: {
+      databaseUri: localQueryInitialInfo.databaseInfo.databaseUri,
+      name: localQueryInitialInfo.databaseInfo.name,
+    },
+    start: localQueryInitialInfo.start,
+    id: localQueryInitialInfo.id,
+  };
+}
+
+function mapQueryEvaluationInfoToDto(
+  queryEvaluationInfo: QueryEvaluationInfo,
+): QueryEvaluationInfoDto {
+  return {
+    querySaveDir: queryEvaluationInfo.querySaveDir,
+    dbItemPath: queryEvaluationInfo.dbItemPath,
+    databaseHasMetadataFile: queryEvaluationInfo.databaseHasMetadataFile,
+    quickEvalPosition: queryEvaluationInfo.quickEvalPosition,
+    metadata: queryEvaluationInfo.metadata,
+    resultsPaths: queryEvaluationInfo.resultsPaths,
+  };
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-local-query-dto-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-local-query-dto-mapper.ts
@@ -0,0 +1,141 @@
+import {
+  LocalQueryInfo,
+  CompletedQueryInfo,
+  InitialQueryInfo,
+} from "../../query-results";
+import { QueryEvaluationInfo } from "../../run-queries-shared";
+import {
+  CompletedQueryInfoDto,
+  QueryEvaluationInfoDto,
+  InitialQueryInfoDto,
+  QueryHistoryLocalQueryDto,
+  SortDirectionDto,
+  InterpretedResultsSortStateDto,
+  SortedResultSetInfoDto,
+  RawResultsSortStateDto,
+} from "./query-history-local-query-dto";
+import {
+  InterpretedResultsSortState,
+  RawResultsSortState,
+  SortDirection,
+  SortedResultSetInfo,
+} from "../../pure/interface-types";
+
+export function mapLocalQueryItemToDomainModel(
+  localQuery: QueryHistoryLocalQueryDto,
+): LocalQueryInfo {
+  return new LocalQueryInfo(
+    mapInitialQueryInfoToDomainModel(localQuery.initialInfo),
+    undefined,
+    localQuery.failureReason,
+    localQuery.completedQuery &&
+      mapCompletedQueryInfoToDomainModel(localQuery.completedQuery),
+    localQuery.evalLogLocation,
+    localQuery.evalLogSummaryLocation,
+    localQuery.jsonEvalLogSummaryLocation,
+    localQuery.evalLogSummarySymbolsLocation,
+  );
+}
+
+function mapCompletedQueryInfoToDomainModel(
+  completedQuery: CompletedQueryInfoDto,
+): CompletedQueryInfo {
+  const sortState =
+    completedQuery.interpretedResultsSortState &&
+    mapSortStateToDomainModel(completedQuery.interpretedResultsSortState);
+
+  const sortedResults = Object.fromEntries(
+    Object.entries(completedQuery.sortedResultsInfo).map(([key, value]) => {
+      return [key, mapSortedResultSetInfoToDomainModel(value)];
+    }),
+  );
+
+  return new CompletedQueryInfo(
+    mapQueryEvaluationInfoToDomainModel(completedQuery.query),
+    {
+      runId: completedQuery.result.runId,
+      queryId: completedQuery.result.queryId,
+      resultType: completedQuery.result.resultType,
+      evaluationTime: completedQuery.result.evaluationTime,
+      message: completedQuery.result.message,
+      logFileLocation: completedQuery.result.logFileLocation,
+    },
+    completedQuery.logFileLocation,
+    completedQuery.successful ?? completedQuery.sucessful,
+    completedQuery.message,
+    sortState,
+    completedQuery.resultCount,
+    sortedResults,
+  );
+}
+
+function mapInitialQueryInfoToDomainModel(
+  initialInfo: InitialQueryInfoDto,
+): InitialQueryInfo {
+  return {
+    userSpecifiedLabel: initialInfo.userSpecifiedLabel,
+    queryText: initialInfo.queryText,
+    isQuickQuery: initialInfo.isQuickQuery,
+    isQuickEval: initialInfo.isQuickEval,
+    quickEvalPosition: initialInfo.quickEvalPosition,
+    queryPath: initialInfo.queryPath,
+    databaseInfo: {
+      databaseUri: initialInfo.databaseInfo.databaseUri,
+      name: initialInfo.databaseInfo.name,
+    },
+    start: new Date(initialInfo.start),
+    id: initialInfo.id,
+  };
+}
+
+function mapQueryEvaluationInfoToDomainModel(
+  evaluationInfo: QueryEvaluationInfoDto,
+): QueryEvaluationInfo {
+  return new QueryEvaluationInfo(
+    evaluationInfo.querySaveDir,
+    evaluationInfo.dbItemPath,
+    evaluationInfo.databaseHasMetadataFile,
+    evaluationInfo.quickEvalPosition,
+    evaluationInfo.metadata,
+  );
+}
+
+function mapSortDirectionToDomainModel(
+  sortDirection: SortDirectionDto,
+): SortDirection {
+  switch (sortDirection) {
+    case SortDirectionDto.asc:
+      return SortDirection.asc;
+    case SortDirectionDto.desc:
+      return SortDirection.desc;
+  }
+}
+
+function mapSortStateToDomainModel(
+  sortState: InterpretedResultsSortStateDto,
+): InterpretedResultsSortState {
+  return {
+    sortBy: sortState.sortBy,
+    sortDirection: mapSortDirectionToDomainModel(sortState.sortDirection),
+  };
+}
+
+function mapSortedResultSetInfoToDomainModel(
+  sortedResultSetInfo: SortedResultSetInfoDto,
+): SortedResultSetInfo {
+  return {
+    resultsPath: sortedResultSetInfo.resultsPath,
+    sortState: mapRawResultsSortStateToDomainModel(
+      sortedResultSetInfo.sortState,
+    ),
+  };
+}
+
+function mapRawResultsSortStateToDomainModel(
+  sortState: RawResultsSortStateDto,
+): RawResultsSortState {
+  return {
+    columnIndex: sortState.columnIndex,
+    sortDirection: mapSortDirectionToDomainModel(sortState.sortDirection),
+  };
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-local-query-dto.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-local-query-dto.ts
@@ -0,0 +1,103 @@
+// Contains models and consts for the data we want to store in the query history store.
+// Changes to these models should be done carefully and account for backwards compatibility of data.
+
+export interface QueryHistoryLocalQueryDto {
+  initialInfo: InitialQueryInfoDto;
+  t: "local";
+  evalLogLocation?: string;
+  evalLogSummaryLocation?: string;
+  jsonEvalLogSummaryLocation?: string;
+  evalLogSummarySymbolsLocation?: string;
+  completedQuery?: CompletedQueryInfoDto;
+  failureReason?: string;
+}
+
+export interface InitialQueryInfoDto {
+  userSpecifiedLabel?: string;
+  queryText: string;
+  isQuickQuery: boolean;
+  isQuickEval: boolean;
+  quickEvalPosition?: PositionDto;
+  queryPath: string;
+  databaseInfo: DatabaseInfoDto;
+  start: Date;
+  id: string;
+}
+
+interface DatabaseInfoDto {
+  name: string;
+  databaseUri: string;
+}
+
+interface PositionDto {
+  line: number;
+  column: number;
+  endLine: number;
+  endColumn: number;
+  fileName: string;
+}
+
+export interface CompletedQueryInfoDto {
+  query: QueryEvaluationInfoDto;
+  message?: string;
+  successful?: boolean;
+
+  // There once was a typo in the data model, which is why we need to support both
+  sucessful?: boolean;
+  result: EvaluationResultDto;
+  logFileLocation?: string;
+  resultCount: number;
+  sortedResultsInfo: Record<string, SortedResultSetInfoDto>;
+  interpretedResultsSortState?: InterpretedResultsSortStateDto;
+}
+
+export interface InterpretedResultsSortStateDto {
+  sortBy: InterpretedResultsSortColumnDto;
+  sortDirection: SortDirectionDto;
+}
+
+type InterpretedResultsSortColumnDto = "alert-message";
+
+export interface SortedResultSetInfoDto {
+  resultsPath: string;
+  sortState: RawResultsSortStateDto;
+}
+
+export interface RawResultsSortStateDto {
+  columnIndex: number;
+  sortDirection: SortDirectionDto;
+}
+
+export enum SortDirectionDto {
+  asc,
+  desc,
+}
+
+interface EvaluationResultDto {
+  runId: number;
+  queryId: number;
+  resultType: number;
+  evaluationTime: number;
+  message?: string;
+  logFileLocation?: string;
+}
+
+export interface QueryEvaluationInfoDto {
+  querySaveDir: string;
+  dbItemPath: string;
+  databaseHasMetadataFile: boolean;
+  quickEvalPosition?: PositionDto;
+  metadata?: QueryMetadataDto;
+  resultsPaths: {
+    resultsPath: string;
+    interpretedResultsPath: string;
+  };
+}
+
+interface QueryMetadataDto {
+  name?: string;
+  description?: string;
+  id?: string;
+  kind?: string;
+  scored?: string;
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-store.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-store.ts
@@ -10,13 +10,11 @@ import {
 } from "../../pure/helpers-pure";
 import { QueryHistoryInfo } from "../query-history-info";
 import { redactableError } from "../../pure/errors";
-import {
-  ALLOWED_QUERY_HISTORY_VERSIONS,
-  QueryHistoryData,
-  QueryHistoryDataItem,
-} from "./query-history-data";
-import { mapQueryHistoryToDomainModels } from "./data-mapper";
-import { mapQueryHistoryToDataModels } from "./domain-mapper";
+import { QueryHistoryDto, QueryHistoryItemDto } from "./query-history-dto";
+import { mapQueryHistoryToDomainModel } from "./query-history-dto-mapper";
+import { mapQueryHistoryToDto } from "./query-history-domain-mapper";
+
+const ALLOWED_QUERY_HISTORY_VERSIONS = [1, 2];

 export async function readQueryHistoryFromFile(
  fsPath: string,
@@ -26,7 +24,7 @@ export async function readQueryHistoryFromFile(
      return [];
    }

-    const obj: QueryHistoryData = await readJson(fsPath, {
+    const obj: QueryHistoryDto = await readJson(fsPath, {
      encoding: "utf8",
    });

@@ -40,21 +38,21 @@ export async function readQueryHistoryFromFile(
    const queries = obj.queries;
    // Remove remote queries, which are not supported anymore.
    const parsedQueries = queries.filter(
-      (q: QueryHistoryDataItem | { t: "remote" }) => q.t !== "remote",
+      (q: QueryHistoryItemDto | { t: "remote" }) => q.t !== "remote",
    );

    // Map the data models to the domain models.
    const domainModels: QueryHistoryInfo[] =
-      mapQueryHistoryToDomainModels(parsedQueries);
+      mapQueryHistoryToDomainModel(parsedQueries);

-    // filter out queries that have been deleted on disk
+    // Filter out queries that have been deleted on disk
    // most likely another workspace has deleted them because the
    // queries aged out.
    const filteredDomainModels: Promise<QueryHistoryInfo[]> = asyncFilter(
      domainModels,
      async (q) => {
        if (q.t === "variant-analysis") {
-          // the query history store doesn't know where variant analysises are
+          // The query history store doesn't know where variant analysises are
          // stored so we need to assume here that they exist. We check later
          // to see if they exist on disk.
          return true;
@@ -72,7 +70,7 @@ export async function readQueryHistoryFromFile(
        fullMessage: `Error loading query history.\n${getErrorStack(e)}`,
      },
    );
-    // since the query history is invalid, it should be deleted so this error does not happen on next startup.
+    // Since the query history is invalid, it should be deleted so this error does not happen on next startup.
    await remove(fsPath);
    return [];
  }
@@ -95,13 +93,13 @@ export async function writeQueryHistoryToFile(
    if (!(await pathExists(fsPath))) {
      await mkdir(dirname(fsPath), { recursive: true });
    }
-    // remove incomplete local queries since they cannot be recreated on restart
+    // Remove incomplete local queries since they cannot be recreated on restart
    const filteredQueries = queries.filter((q) =>
      q.t === "local" ? q.completedQuery !== undefined : true,
    );

-    // map domain model queries to data model
-    const queryHistoryData = mapQueryHistoryToDataModels(filteredQueries);
+    // Map domain model queries to data model
+    const queryHistoryData = mapQueryHistoryToDto(filteredQueries);

    const data = JSON.stringify(
      {
--- a/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-domain-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-domain-mapper.ts
@@ -0,0 +1,235 @@
+import {
+  QueryHistoryVariantAnalysisDto,
+  QueryLanguageDto,
+  QueryStatusDto,
+  VariantAnalysisDto,
+  VariantAnalysisFailureReasonDto,
+  VariantAnalysisRepoStatusDto,
+  VariantAnalysisScannedRepositoryDto,
+  VariantAnalysisSkippedRepositoriesDto,
+  VariantAnalysisSkippedRepositoryDto,
+  VariantAnalysisSkippedRepositoryGroupDto,
+  VariantAnalysisStatusDto,
+} from "./query-history-variant-analysis-dto";
+import {
+  VariantAnalysis,
+  VariantAnalysisFailureReason,
+  VariantAnalysisRepoStatus,
+  VariantAnalysisScannedRepository,
+  VariantAnalysisSkippedRepositories,
+  VariantAnalysisSkippedRepository,
+  VariantAnalysisSkippedRepositoryGroup,
+  VariantAnalysisStatus,
+} from "../../variant-analysis/shared/variant-analysis";
+import { assertNever } from "../../pure/helpers-pure";
+import { QueryLanguage } from "../../common/query-language";
+import { QueryStatus } from "../../query-status";
+import { VariantAnalysisHistoryItem } from "../variant-analysis-history-item";
+
+export function mapQueryHistoryVariantAnalysisToDto(
+  item: VariantAnalysisHistoryItem,
+): QueryHistoryVariantAnalysisDto {
+  return {
+    t: "variant-analysis",
+    failureReason: item.failureReason,
+    resultCount: item.resultCount,
+    status: mapQueryStatusToDto(item.status),
+    completed: item.completed,
+    variantAnalysis: mapVariantAnalysisDtoToDto(item.variantAnalysis),
+    userSpecifiedLabel: item.userSpecifiedLabel,
+  };
+}
+
+function mapVariantAnalysisDtoToDto(
+  variantAnalysis: VariantAnalysis,
+): VariantAnalysisDto {
+  return {
+    id: variantAnalysis.id,
+    controllerRepo: {
+      id: variantAnalysis.controllerRepo.id,
+      fullName: variantAnalysis.controllerRepo.fullName,
+      private: variantAnalysis.controllerRepo.private,
+    },
+    query: {
+      name: variantAnalysis.query.name,
+      filePath: variantAnalysis.query.filePath,
+      language: mapQueryLanguageToDto(variantAnalysis.query.language),
+      text: variantAnalysis.query.text,
+    },
+    databases: {
+      repositories: variantAnalysis.databases.repositories,
+      repositoryLists: variantAnalysis.databases.repositoryLists,
+      repositoryOwners: variantAnalysis.databases.repositoryOwners,
+    },
+    createdAt: variantAnalysis.createdAt,
+    updatedAt: variantAnalysis.updatedAt,
+    executionStartTime: variantAnalysis.executionStartTime,
+    status: mapVariantAnalysisStatusToDto(variantAnalysis.status),
+    completedAt: variantAnalysis.completedAt,
+    actionsWorkflowRunId: variantAnalysis.actionsWorkflowRunId,
+    failureReason:
+      variantAnalysis.failureReason &&
+      mapVariantAnalysisFailureReasonToDto(variantAnalysis.failureReason),
+    scannedRepos:
+      variantAnalysis.scannedRepos &&
+      mapVariantAnalysisScannedRepositoriesToDto(variantAnalysis.scannedRepos),
+    skippedRepos:
+      variantAnalysis.skippedRepos &&
+      mapVariantAnalysisSkippedRepositoriesToDto(variantAnalysis.skippedRepos),
+  };
+}
+
+function mapVariantAnalysisScannedRepositoriesToDto(
+  repos: VariantAnalysisScannedRepository[],
+): VariantAnalysisScannedRepositoryDto[] {
+  return repos.map(mapVariantAnalysisScannedRepositoryToDto);
+}
+
+function mapVariantAnalysisScannedRepositoryToDto(
+  repo: VariantAnalysisScannedRepository,
+): VariantAnalysisScannedRepositoryDto {
+  return {
+    repository: {
+      id: repo.repository.id,
+      fullName: repo.repository.fullName,
+      private: repo.repository.private,
+      stargazersCount: repo.repository.stargazersCount,
+      updatedAt: repo.repository.updatedAt,
+    },
+    analysisStatus: mapVariantAnalysisRepoStatusToDto(repo.analysisStatus),
+    resultCount: repo.resultCount,
+    artifactSizeInBytes: repo.artifactSizeInBytes,
+    failureMessage: repo.failureMessage,
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoriesToDto(
+  repos: VariantAnalysisSkippedRepositories,
+): VariantAnalysisSkippedRepositoriesDto {
+  return {
+    accessMismatchRepos:
+      repos.accessMismatchRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDto(repos.accessMismatchRepos),
+    notFoundRepos:
+      repos.notFoundRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDto(repos.notFoundRepos),
+    noCodeqlDbRepos:
+      repos.noCodeqlDbRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDto(repos.noCodeqlDbRepos),
+    overLimitRepos:
+      repos.overLimitRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDto(repos.overLimitRepos),
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoryGroupToDto(
+  repoGroup: VariantAnalysisSkippedRepositoryGroup,
+): VariantAnalysisSkippedRepositoryGroupDto {
+  return {
+    repositoryCount: repoGroup.repositoryCount,
+    repositories: repoGroup.repositories.map(
+      mapVariantAnalysisSkippedRepositoryToDto,
+    ),
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoryToDto(
+  repo: VariantAnalysisSkippedRepository,
+): VariantAnalysisSkippedRepositoryDto {
+  return {
+    id: repo.id,
+    fullName: repo.fullName,
+    private: repo.private,
+    stargazersCount: repo.stargazersCount,
+    updatedAt: repo.updatedAt,
+  };
+}
+
+function mapVariantAnalysisFailureReasonToDto(
+  failureReason: VariantAnalysisFailureReason,
+): VariantAnalysisFailureReasonDto {
+  switch (failureReason) {
+    case VariantAnalysisFailureReason.NoReposQueried:
+      return VariantAnalysisFailureReasonDto.NoReposQueried;
+    case VariantAnalysisFailureReason.ActionsWorkflowRunFailed:
+      return VariantAnalysisFailureReasonDto.ActionsWorkflowRunFailed;
+    case VariantAnalysisFailureReason.InternalError:
+      return VariantAnalysisFailureReasonDto.InternalError;
+    default:
+      assertNever(failureReason);
+  }
+}
+
+function mapVariantAnalysisRepoStatusToDto(
+  status: VariantAnalysisRepoStatus,
+): VariantAnalysisRepoStatusDto {
+  switch (status) {
+    case VariantAnalysisRepoStatus.Pending:
+      return VariantAnalysisRepoStatusDto.Pending;
+    case VariantAnalysisRepoStatus.InProgress:
+      return VariantAnalysisRepoStatusDto.InProgress;
+    case VariantAnalysisRepoStatus.Succeeded:
+      return VariantAnalysisRepoStatusDto.Succeeded;
+    case VariantAnalysisRepoStatus.Failed:
+      return VariantAnalysisRepoStatusDto.Failed;
+    case VariantAnalysisRepoStatus.Canceled:
+      return VariantAnalysisRepoStatusDto.Canceled;
+    case VariantAnalysisRepoStatus.TimedOut:
+      return VariantAnalysisRepoStatusDto.TimedOut;
+    default:
+      assertNever(status);
+  }
+}
+
+function mapVariantAnalysisStatusToDto(
+  status: VariantAnalysisStatus,
+): VariantAnalysisStatusDto {
+  switch (status) {
+    case VariantAnalysisStatus.InProgress:
+      return VariantAnalysisStatusDto.InProgress;
+    case VariantAnalysisStatus.Succeeded:
+      return VariantAnalysisStatusDto.Succeeded;
+    case VariantAnalysisStatus.Failed:
+      return VariantAnalysisStatusDto.Failed;
+    case VariantAnalysisStatus.Canceled:
+      return VariantAnalysisStatusDto.Canceled;
+    default:
+      assertNever(status);
+  }
+}
+
+function mapQueryLanguageToDto(language: QueryLanguage): QueryLanguageDto {
+  switch (language) {
+    case QueryLanguage.CSharp:
+      return QueryLanguageDto.CSharp;
+    case QueryLanguage.Cpp:
+      return QueryLanguageDto.Cpp;
+    case QueryLanguage.Go:
+      return QueryLanguageDto.Go;
+    case QueryLanguage.Java:
+      return QueryLanguageDto.Java;
+    case QueryLanguage.Javascript:
+      return QueryLanguageDto.Javascript;
+    case QueryLanguage.Python:
+      return QueryLanguageDto.Python;
+    case QueryLanguage.Ruby:
+      return QueryLanguageDto.Ruby;
+    case QueryLanguage.Swift:
+      return QueryLanguageDto.Swift;
+    default:
+      assertNever(language);
+  }
+}
+
+function mapQueryStatusToDto(status: QueryStatus): QueryStatusDto {
+  switch (status) {
+    case QueryStatus.InProgress:
+      return QueryStatusDto.InProgress;
+    case QueryStatus.Completed:
+      return QueryStatusDto.Completed;
+    case QueryStatus.Failed:
+      return QueryStatusDto.Failed;
+    default:
+      assertNever(status);
+  }
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-dto-mapper.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-dto-mapper.ts
@@ -0,0 +1,253 @@
+import {
+  QueryHistoryVariantAnalysisDto,
+  QueryLanguageDto,
+  QueryStatusDto,
+  VariantAnalysisDto,
+  VariantAnalysisFailureReasonDto,
+  VariantAnalysisRepoStatusDto,
+  VariantAnalysisScannedRepositoryDto,
+  VariantAnalysisSkippedRepositoriesDto,
+  VariantAnalysisSkippedRepositoryDto,
+  VariantAnalysisSkippedRepositoryGroupDto,
+  VariantAnalysisStatusDto,
+} from "./query-history-variant-analysis-dto";
+import {
+  VariantAnalysis,
+  VariantAnalysisFailureReason,
+  VariantAnalysisRepoStatus,
+  VariantAnalysisScannedRepository,
+  VariantAnalysisSkippedRepositories,
+  VariantAnalysisSkippedRepository,
+  VariantAnalysisSkippedRepositoryGroup,
+  VariantAnalysisStatus,
+} from "../../variant-analysis/shared/variant-analysis";
+import { assertNever } from "../../pure/helpers-pure";
+import { QueryLanguage } from "../../common/query-language";
+import { QueryStatus } from "../../query-status";
+import { VariantAnalysisHistoryItem } from "../variant-analysis-history-item";
+
+export function mapQueryHistoryVariantAnalysisToDomainModel(
+  item: QueryHistoryVariantAnalysisDto,
+): VariantAnalysisHistoryItem {
+  return {
+    t: "variant-analysis",
+    failureReason: item.failureReason,
+    resultCount: item.resultCount,
+    status: mapQueryStatusToDomainModel(item.status),
+    completed: item.completed,
+    variantAnalysis: mapVariantAnalysisToDomainModel(item.variantAnalysis),
+    userSpecifiedLabel: item.userSpecifiedLabel,
+  };
+}
+
+function mapVariantAnalysisToDomainModel(
+  variantAnalysis: VariantAnalysisDto,
+): VariantAnalysis {
+  return {
+    id: variantAnalysis.id,
+    controllerRepo: {
+      id: variantAnalysis.controllerRepo.id,
+      fullName: variantAnalysis.controllerRepo.fullName,
+      private: variantAnalysis.controllerRepo.private,
+    },
+    query: {
+      name: variantAnalysis.query.name,
+      filePath: variantAnalysis.query.filePath,
+      language: mapQueryLanguageToDomainModel(variantAnalysis.query.language),
+      text: variantAnalysis.query.text,
+    },
+    databases: {
+      repositories: variantAnalysis.databases.repositories,
+      repositoryLists: variantAnalysis.databases.repositoryLists,
+      repositoryOwners: variantAnalysis.databases.repositoryOwners,
+    },
+    createdAt: variantAnalysis.createdAt,
+    updatedAt: variantAnalysis.updatedAt,
+    executionStartTime: variantAnalysis.executionStartTime,
+    status: mapVariantAnalysisStatusToDomainModel(variantAnalysis.status),
+    completedAt: variantAnalysis.completedAt,
+    actionsWorkflowRunId: variantAnalysis.actionsWorkflowRunId,
+    failureReason:
+      variantAnalysis.failureReason &&
+      mapVariantAnalysisFailureReasonToDomainModel(
+        variantAnalysis.failureReason,
+      ),
+    scannedRepos:
+      variantAnalysis.scannedRepos &&
+      mapVariantAnalysisScannedRepositoriesToDomainModel(
+        variantAnalysis.scannedRepos,
+      ),
+    skippedRepos:
+      variantAnalysis.skippedRepos &&
+      mapVariantAnalysisSkippedRepositoriesToDomainModel(
+        variantAnalysis.skippedRepos,
+      ),
+  };
+}
+
+function mapVariantAnalysisScannedRepositoriesToDomainModel(
+  repos: VariantAnalysisScannedRepositoryDto[],
+): VariantAnalysisScannedRepository[] {
+  return repos.map(mapVariantAnalysisScannedRepositoryToDomainModel);
+}
+
+function mapVariantAnalysisScannedRepositoryToDomainModel(
+  repo: VariantAnalysisScannedRepositoryDto,
+): VariantAnalysisScannedRepository {
+  return {
+    repository: {
+      id: repo.repository.id,
+      fullName: repo.repository.fullName,
+      private: repo.repository.private,
+      stargazersCount: repo.repository.stargazersCount,
+      updatedAt: repo.repository.updatedAt,
+    },
+    analysisStatus: mapVariantAnalysisRepoStatusToDomainModel(
+      repo.analysisStatus,
+    ),
+    resultCount: repo.resultCount,
+    artifactSizeInBytes: repo.artifactSizeInBytes,
+    failureMessage: repo.failureMessage,
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoriesToDomainModel(
+  repos: VariantAnalysisSkippedRepositoriesDto,
+): VariantAnalysisSkippedRepositories {
+  return {
+    accessMismatchRepos:
+      repos.accessMismatchRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDomainModel(
+        repos.accessMismatchRepos,
+      ),
+    notFoundRepos:
+      repos.notFoundRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDomainModel(
+        repos.notFoundRepos,
+      ),
+    noCodeqlDbRepos:
+      repos.noCodeqlDbRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDomainModel(
+        repos.noCodeqlDbRepos,
+      ),
+    overLimitRepos:
+      repos.overLimitRepos &&
+      mapVariantAnalysisSkippedRepositoryGroupToDomainModel(
+        repos.overLimitRepos,
+      ),
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoryGroupToDomainModel(
+  repoGroup: VariantAnalysisSkippedRepositoryGroupDto,
+): VariantAnalysisSkippedRepositoryGroup {
+  return {
+    repositoryCount: repoGroup.repositoryCount,
+    repositories: repoGroup.repositories.map(
+      mapVariantAnalysisSkippedRepositoryToDomainModel,
+    ),
+  };
+}
+
+function mapVariantAnalysisSkippedRepositoryToDomainModel(
+  repo: VariantAnalysisSkippedRepositoryDto,
+): VariantAnalysisSkippedRepository {
+  return {
+    id: repo.id,
+    fullName: repo.fullName,
+    private: repo.private,
+    stargazersCount: repo.stargazersCount,
+    updatedAt: repo.updatedAt,
+  };
+}
+
+function mapVariantAnalysisFailureReasonToDomainModel(
+  failureReason: VariantAnalysisFailureReasonDto,
+): VariantAnalysisFailureReason {
+  switch (failureReason) {
+    case VariantAnalysisFailureReasonDto.NoReposQueried:
+      return VariantAnalysisFailureReason.NoReposQueried;
+    case VariantAnalysisFailureReasonDto.ActionsWorkflowRunFailed:
+      return VariantAnalysisFailureReason.ActionsWorkflowRunFailed;
+    case VariantAnalysisFailureReasonDto.InternalError:
+      return VariantAnalysisFailureReason.InternalError;
+    default:
+      assertNever(failureReason);
+  }
+}
+
+function mapVariantAnalysisRepoStatusToDomainModel(
+  status: VariantAnalysisRepoStatusDto,
+): VariantAnalysisRepoStatus {
+  switch (status) {
+    case VariantAnalysisRepoStatusDto.Pending:
+      return VariantAnalysisRepoStatus.Pending;
+    case VariantAnalysisRepoStatusDto.InProgress:
+      return VariantAnalysisRepoStatus.InProgress;
+    case VariantAnalysisRepoStatusDto.Succeeded:
+      return VariantAnalysisRepoStatus.Succeeded;
+    case VariantAnalysisRepoStatusDto.Failed:
+      return VariantAnalysisRepoStatus.Failed;
+    case VariantAnalysisRepoStatusDto.Canceled:
+      return VariantAnalysisRepoStatus.Canceled;
+    case VariantAnalysisRepoStatusDto.TimedOut:
+      return VariantAnalysisRepoStatus.TimedOut;
+    default:
+      assertNever(status);
+  }
+}
+
+function mapVariantAnalysisStatusToDomainModel(
+  status: VariantAnalysisStatusDto,
+): VariantAnalysisStatus {
+  switch (status) {
+    case VariantAnalysisStatusDto.InProgress:
+      return VariantAnalysisStatus.InProgress;
+    case VariantAnalysisStatusDto.Succeeded:
+      return VariantAnalysisStatus.Succeeded;
+    case VariantAnalysisStatusDto.Failed:
+      return VariantAnalysisStatus.Failed;
+    case VariantAnalysisStatusDto.Canceled:
+      return VariantAnalysisStatus.Canceled;
+    default:
+      assertNever(status);
+  }
+}
+
+function mapQueryLanguageToDomainModel(
+  language: QueryLanguageDto,
+): QueryLanguage {
+  switch (language) {
+    case QueryLanguageDto.CSharp:
+      return QueryLanguage.CSharp;
+    case QueryLanguageDto.Cpp:
+      return QueryLanguage.Cpp;
+    case QueryLanguageDto.Go:
+      return QueryLanguage.Go;
+    case QueryLanguageDto.Java:
+      return QueryLanguage.Java;
+    case QueryLanguageDto.Javascript:
+      return QueryLanguage.Javascript;
+    case QueryLanguageDto.Python:
+      return QueryLanguage.Python;
+    case QueryLanguageDto.Ruby:
+      return QueryLanguage.Ruby;
+    case QueryLanguageDto.Swift:
+      return QueryLanguage.Swift;
+    default:
+      assertNever(language);
+  }
+}
+
+function mapQueryStatusToDomainModel(status: QueryStatusDto): QueryStatus {
+  switch (status) {
+    case QueryStatusDto.InProgress:
+      return QueryStatus.InProgress;
+    case QueryStatusDto.Completed:
+      return QueryStatus.Completed;
+    case QueryStatusDto.Failed:
+      return QueryStatus.Failed;
+    default:
+      assertNever(status);
+  }
+}
--- a/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-dto.ts
+++ b/extensions/ql-vscode/src/query-history/store/query-history-variant-analysis-dto.ts
@@ -0,0 +1,114 @@
+// Contains models and consts for the data we want to store in the query history store.
+// Changes to these models should be done carefully and account for backwards compatibility of data.
+
+export interface QueryHistoryVariantAnalysisDto {
+  readonly t: "variant-analysis";
+  failureReason?: string;
+  resultCount?: number;
+  status: QueryStatusDto;
+  completed: boolean;
+  variantAnalysis: VariantAnalysisDto;
+  userSpecifiedLabel?: string;
+}
+
+export interface VariantAnalysisDto {
+  id: number;
+  controllerRepo: {
+    id: number;
+    fullName: string;
+    private: boolean;
+  };
+  query: {
+    name: string;
+    filePath: string;
+    language: QueryLanguageDto;
+    text: string;
+  };
+  databases: {
+    repositories?: string[];
+    repositoryLists?: string[];
+    repositoryOwners?: string[];
+  };
+  createdAt: string;
+  updatedAt: string;
+  executionStartTime: number;
+  status: VariantAnalysisStatusDto;
+  completedAt?: string;
+  actionsWorkflowRunId?: number;
+  failureReason?: VariantAnalysisFailureReasonDto;
+  scannedRepos?: VariantAnalysisScannedRepositoryDto[];
+  skippedRepos?: VariantAnalysisSkippedRepositoriesDto;
+}
+
+export interface VariantAnalysisScannedRepositoryDto {
+  repository: {
+    id: number;
+    fullName: string;
+    private: boolean;
+    stargazersCount: number;
+    updatedAt: string | null;
+  };
+  analysisStatus: VariantAnalysisRepoStatusDto;
+  resultCount?: number;
+  artifactSizeInBytes?: number;
+  failureMessage?: string;
+}
+
+export interface VariantAnalysisSkippedRepositoriesDto {
+  accessMismatchRepos?: VariantAnalysisSkippedRepositoryGroupDto;
+  notFoundRepos?: VariantAnalysisSkippedRepositoryGroupDto;
+  noCodeqlDbRepos?: VariantAnalysisSkippedRepositoryGroupDto;
+  overLimitRepos?: VariantAnalysisSkippedRepositoryGroupDto;
+}
+
+export interface VariantAnalysisSkippedRepositoryGroupDto {
+  repositoryCount: number;
+  repositories: VariantAnalysisSkippedRepositoryDto[];
+}
+
+export interface VariantAnalysisSkippedRepositoryDto {
+  id?: number;
+  fullName: string;
+  private?: boolean;
+  stargazersCount?: number;
+  updatedAt?: string | null;
+}
+
+export enum VariantAnalysisFailureReasonDto {
+  NoReposQueried = "noReposQueried",
+  ActionsWorkflowRunFailed = "actionsWorkflowRunFailed",
+  InternalError = "internalError",
+}
+
+export enum VariantAnalysisRepoStatusDto {
+  Pending = "pending",
+  InProgress = "inProgress",
+  Succeeded = "succeeded",
+  Failed = "failed",
+  Canceled = "canceled",
+  TimedOut = "timedOut",
+}
+
+export enum VariantAnalysisStatusDto {
+  InProgress = "inProgress",
+  Succeeded = "succeeded",
+  Failed = "failed",
+  Canceled = "canceled",
+}
+
+export enum QueryLanguageDto {
+  CSharp = "csharp",
+  Cpp = "cpp",
+  Go = "go",
+  Java = "java",
+  Javascript = "javascript",
+  Python = "python",
+  Ruby = "ruby",
+  Swift = "swift",
+}
+
+export enum QueryStatusDto {
+  InProgress = "InProgress",
+  Completed = "Completed",
+  Failed = "Failed",
+}
--- a/extensions/ql-vscode/src/query-history/store/variant-analysis-data-item.ts
+++ b/extensions/ql-vscode/src/query-history/store/variant-analysis-data-item.ts
@@ -1,83 +0,0 @@
-import { QueryLanguage } from "../../common/query-language";
-import { QueryStatus } from "../../query-status";
-import {
-  VariantAnalysisFailureReason,
-  VariantAnalysisRepoStatus,
-  VariantAnalysisStatus,
-} from "../../variant-analysis/shared/variant-analysis";
-
-// Data Model for Variant Analysis Query History Items
-// All data points are modelled, except enums.
-
-export interface VariantAnalysisDataItem {
-  readonly t: "variant-analysis";
-  failureReason?: string;
-  resultCount?: number;
-  status: QueryStatus;
-  completed: boolean;
-  variantAnalysis: VariantAnalysisQueryHistoryData;
-  userSpecifiedLabel?: string;
-}
-
-export interface VariantAnalysisQueryHistoryData {
-  id: number;
-  controllerRepo: {
-    id: number;
-    fullName: string;
-    private: boolean;
-  };
-  query: {
-    name: string;
-    filePath: string;
-    language: QueryLanguage;
-    text: string;
-  };
-  databases: {
-    repositories?: string[];
-    repositoryLists?: string[];
-    repositoryOwners?: string[];
-  };
-  createdAt: string;
-  updatedAt: string;
-  executionStartTime: number;
-  status: VariantAnalysisStatus;
-  completedAt?: string;
-  actionsWorkflowRunId?: number;
-  failureReason?: VariantAnalysisFailureReason;
-  scannedRepos?: VariantAnalysisScannedRepositoryData[];
-  skippedRepos?: VariantAnalysisSkippedRepositoriesData;
-}
-
-export interface VariantAnalysisScannedRepositoryData {
-  repository: {
-    id: number;
-    fullName: string;
-    private: boolean;
-    stargazersCount: number;
-    updatedAt: string | null;
-  };
-  analysisStatus: VariantAnalysisRepoStatus;
-  resultCount?: number;
-  artifactSizeInBytes?: number;
-  failureMessage?: string;
-}
-
-export interface VariantAnalysisSkippedRepositoriesData {
-  accessMismatchRepos?: VariantAnalysisSkippedRepositoryGroupData;
-  notFoundRepos?: VariantAnalysisSkippedRepositoryGroupData;
-  noCodeqlDbRepos?: VariantAnalysisSkippedRepositoryGroupData;
-  overLimitRepos?: VariantAnalysisSkippedRepositoryGroupData;
-}
-
-export interface VariantAnalysisSkippedRepositoryGroupData {
-  repositoryCount: number;
-  repositories: VariantAnalysisSkippedRepositoryData[];
-}
-
-export interface VariantAnalysisSkippedRepositoryData {
-  id?: number;
-  fullName: string;
-  private?: boolean;
-  stargazersCount?: number;
-  updatedAt?: string | null;
-}
--- a/extensions/ql-vscode/src/skeleton-query-wizard.ts
+++ b/extensions/ql-vscode/src/skeleton-query-wizard.ts
@@ -261,8 +261,12 @@ export class SkeletonQueryWizard {
  ): Promise<DatabaseItem | undefined> {
    const dbItems = databaseItems || [];
    const dbs = dbItems.filter(
-      (db) => db.language === language && db.name === databaseNwo,
+      (db) =>
+        db.language === language &&
+        db.name === databaseNwo &&
+        db.error === undefined,
    );
+
    if (dbs.length === 0) {
      return undefined;
    }
@@ -274,7 +278,9 @@ export class SkeletonQueryWizard {
    databaseItems: readonly DatabaseItem[],
  ): Promise<DatabaseItem | undefined> {
    const dbItems = databaseItems || [];
-    const dbs = dbItems.filter((db) => db.language === language);
+    const dbs = dbItems.filter(
+      (db) => db.language === language && db.error === undefined,
+    );
    if (dbs.length === 0) {
      return undefined;
    }
--- a/extensions/ql-vscode/src/variant-analysis/repo-states-store/index.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-states-store/index.ts
@@ -0,0 +1 @@
+export * from "./repo-states-store";
--- a/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-domain-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-domain-mapper.ts
@@ -0,0 +1,46 @@
+import { assertNever } from "../../pure/helpers-pure";
+import {
+  VariantAnalysisScannedRepositoryState,
+  VariantAnalysisScannedRepositoryDownloadStatus,
+} from "../shared/variant-analysis";
+import {
+  VariantAnalysisScannedRepositoryStateDto,
+  VariantAnalysisScannedRepositoryDownloadDto,
+} from "./repo-states-dto";
+
+export function mapRepoStatesToDomainModel(
+  repoStates: Record<number, VariantAnalysisScannedRepositoryStateDto>,
+): Record<number, VariantAnalysisScannedRepositoryState> {
+  return Object.fromEntries(
+    Object.entries(repoStates).map(([key, value]) => {
+      return [key, mapRepoStateToDomainModel(value)];
+    }),
+  );
+}
+
+function mapRepoStateToDomainModel(
+  repoState: VariantAnalysisScannedRepositoryStateDto,
+): VariantAnalysisScannedRepositoryState {
+  return {
+    repositoryId: repoState.repositoryId,
+    downloadStatus: mapDownloadStatusToDomainModel(repoState.downloadStatus),
+    downloadPercentage: repoState.downloadPercentage,
+  };
+}
+
+function mapDownloadStatusToDomainModel(
+  downloadedStatus: VariantAnalysisScannedRepositoryDownloadDto,
+) {
+  switch (downloadedStatus) {
+    case VariantAnalysisScannedRepositoryDownloadDto.Pending:
+      return VariantAnalysisScannedRepositoryDownloadStatus.Pending;
+    case VariantAnalysisScannedRepositoryDownloadDto.InProgress:
+      return VariantAnalysisScannedRepositoryDownloadStatus.InProgress;
+    case VariantAnalysisScannedRepositoryDownloadDto.Succeeded:
+      return VariantAnalysisScannedRepositoryDownloadStatus.Succeeded;
+    case VariantAnalysisScannedRepositoryDownloadDto.Failed:
+      return VariantAnalysisScannedRepositoryDownloadStatus.Failed;
+    default:
+      assertNever(downloadedStatus);
+  }
+}
--- a/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-dto-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-dto-mapper.ts
@@ -0,0 +1,46 @@
+import { assertNever } from "../../pure/helpers-pure";
+import {
+  VariantAnalysisScannedRepositoryDownloadStatus,
+  VariantAnalysisScannedRepositoryState,
+} from "../shared/variant-analysis";
+import {
+  VariantAnalysisScannedRepositoryDownloadDto,
+  VariantAnalysisScannedRepositoryStateDto,
+} from "./repo-states-dto";
+
+export function mapRepoStatesToDto(
+  repoStates: Record<number, VariantAnalysisScannedRepositoryState>,
+): Record<number, VariantAnalysisScannedRepositoryStateDto> {
+  return Object.fromEntries(
+    Object.entries(repoStates).map(([key, value]) => {
+      return [key, mapRepoStateToDto(value)];
+    }),
+  );
+}
+
+function mapRepoStateToDto(
+  repoState: VariantAnalysisScannedRepositoryState,
+): VariantAnalysisScannedRepositoryStateDto {
+  return {
+    repositoryId: repoState.repositoryId,
+    downloadStatus: mapDownloadStatusToDto(repoState.downloadStatus),
+    downloadPercentage: repoState.downloadPercentage,
+  };
+}
+
+function mapDownloadStatusToDto(
+  downloadedStatus: VariantAnalysisScannedRepositoryDownloadStatus,
+) {
+  switch (downloadedStatus) {
+    case VariantAnalysisScannedRepositoryDownloadStatus.Pending:
+      return VariantAnalysisScannedRepositoryDownloadDto.Pending;
+    case VariantAnalysisScannedRepositoryDownloadStatus.InProgress:
+      return VariantAnalysisScannedRepositoryDownloadDto.InProgress;
+    case VariantAnalysisScannedRepositoryDownloadStatus.Succeeded:
+      return VariantAnalysisScannedRepositoryDownloadDto.Succeeded;
+    case VariantAnalysisScannedRepositoryDownloadStatus.Failed:
+      return VariantAnalysisScannedRepositoryDownloadDto.Failed;
+    default:
+      assertNever(downloadedStatus);
+  }
+}
--- a/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-dto.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-dto.ts
@@ -0,0 +1,12 @@
+export interface VariantAnalysisScannedRepositoryStateDto {
+  repositoryId: number;
+  downloadStatus: VariantAnalysisScannedRepositoryDownloadDto;
+  downloadPercentage?: number;
+}
+
+export enum VariantAnalysisScannedRepositoryDownloadDto {
+  Pending = "pending",
+  InProgress = "inProgress",
+  Succeeded = "succeeded",
+  Failed = "failed",
+}
--- a/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-store.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-states-store/repo-states-store.ts
@@ -1,8 +1,8 @@
 import { outputJson, readJson } from "fs-extra";
 import { VariantAnalysisScannedRepositoryState } from "../shared/variant-analysis";
-import { VariantAnalysisScannedRepositoryStateData } from "./repo-states-data-types";
-import { mapRepoStateToData } from "./repo-states-to-data-mapper";
-import { mapRepoStateToDomain } from "./repo-states-to-domain-mapper";
+import { VariantAnalysisScannedRepositoryStateDto } from "./repo-states-dto";
+import { mapRepoStatesToDto } from "./repo-states-dto-mapper";
+import { mapRepoStatesToDomainModel } from "./repo-states-domain-mapper";

 export const REPO_STATES_FILENAME = "repo_states.json";

@@ -10,13 +10,7 @@ export async function writeRepoStates(
  storagePath: string,
  repoStates: Record<number, VariantAnalysisScannedRepositoryState>,
 ): Promise<void> {
-  // Map from repoStates Domain type to the repoStates Data type
-  const repoStatesData = Object.fromEntries(
-    Object.entries(repoStates).map(([key, value]) => {
-      return [key, mapRepoStateToData(value)];
-    }),
-  );
-
+  const repoStatesData = mapRepoStatesToDto(repoStates);
  await outputJson(storagePath, repoStatesData);
 }

@@ -26,15 +20,10 @@ export async function readRepoStates(
  try {
    const repoStatesData: Record<
      number,
-      VariantAnalysisScannedRepositoryStateData
+      VariantAnalysisScannedRepositoryStateDto
    > = await readJson(storagePath);

-    // Map from repoStates Data type to the repoStates Domain type
-    const repoStates = Object.fromEntries(
-      Object.entries(repoStatesData).map(([key, value]) => {
-        return [key, mapRepoStateToDomain(value)];
-      }),
-    );
+    const repoStates = mapRepoStatesToDomainModel(repoStatesData);

    return repoStates;
  } catch (e) {
--- a/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/index.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/index.ts
@@ -0,0 +1 @@
+export * from "./repo-tasks-store";
--- a/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-domain-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-domain-mapper.ts
@@ -4,12 +4,12 @@ import {
  VariantAnalysisRepoStatus,
 } from "../shared/variant-analysis";
 import {
-  VariantAnalysisRepositoryTaskData,
-  VariantAnalysisRepoStatusData,
-} from "./repo-task-data-types";
+  VariantAnalysisRepositoryTaskDto,
+  VariantAnalysisRepoStatusDto,
+} from "./repo-tasks-dto";

-export function mapRepoTaskToDomain(
-  repoTask: VariantAnalysisRepositoryTaskData,
+export function mapRepoTaskToDomainModel(
+  repoTask: VariantAnalysisRepositoryTaskDto,
 ): VariantAnalysisRepositoryTask {
  return {
    repository: {
@@ -17,7 +17,9 @@ export function mapRepoTaskToDomain(
      fullName: repoTask.repository.fullName,
      private: repoTask.repository.private,
    },
-    analysisStatus: mapRepoTaskAnalysisStatusToDomain(repoTask.analysisStatus),
+    analysisStatus: mapRepoTaskAnalysisStatusToDomainModel(
+      repoTask.analysisStatus,
+    ),
    resultCount: repoTask.resultCount,
    artifactSizeInBytes: repoTask.artifactSizeInBytes,
    failureMessage: repoTask.failureMessage,
@@ -27,21 +29,21 @@ export function mapRepoTaskToDomain(
  };
 }

-function mapRepoTaskAnalysisStatusToDomain(
-  analysisStatus: VariantAnalysisRepoStatusData,
+function mapRepoTaskAnalysisStatusToDomainModel(
+  analysisStatus: VariantAnalysisRepoStatusDto,
 ): VariantAnalysisRepoStatus {
  switch (analysisStatus) {
-    case VariantAnalysisRepoStatusData.Pending:
+    case VariantAnalysisRepoStatusDto.Pending:
      return VariantAnalysisRepoStatus.Pending;
-    case VariantAnalysisRepoStatusData.InProgress:
+    case VariantAnalysisRepoStatusDto.InProgress:
      return VariantAnalysisRepoStatus.InProgress;
-    case VariantAnalysisRepoStatusData.Succeeded:
+    case VariantAnalysisRepoStatusDto.Succeeded:
      return VariantAnalysisRepoStatus.Succeeded;
-    case VariantAnalysisRepoStatusData.Failed:
+    case VariantAnalysisRepoStatusDto.Failed:
      return VariantAnalysisRepoStatus.Failed;
-    case VariantAnalysisRepoStatusData.Canceled:
+    case VariantAnalysisRepoStatusDto.Canceled:
      return VariantAnalysisRepoStatus.Canceled;
-    case VariantAnalysisRepoStatusData.TimedOut:
+    case VariantAnalysisRepoStatusDto.TimedOut:
      return VariantAnalysisRepoStatus.TimedOut;
    default:
      assertNever(analysisStatus);
--- a/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-dto-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-dto-mapper.ts
@@ -4,20 +4,20 @@ import {
  VariantAnalysisRepoStatus,
 } from "../shared/variant-analysis";
 import {
-  VariantAnalysisRepositoryTaskData,
-  VariantAnalysisRepoStatusData,
-} from "./repo-task-data-types";
+  VariantAnalysisRepositoryTaskDto,
+  VariantAnalysisRepoStatusDto,
+} from "./repo-tasks-dto";

-export function mapRepoTaskToData(
+export function mapRepoTaskToDto(
  repoTask: VariantAnalysisRepositoryTask,
-): VariantAnalysisRepositoryTaskData {
+): VariantAnalysisRepositoryTaskDto {
  return {
    repository: {
      id: repoTask.repository.id,
      fullName: repoTask.repository.fullName,
      private: repoTask.repository.private,
    },
-    analysisStatus: mapRepoTaskAnalysisStatusToData(repoTask.analysisStatus),
+    analysisStatus: mapRepoTaskAnalysisStatusToDto(repoTask.analysisStatus),
    resultCount: repoTask.resultCount,
    artifactSizeInBytes: repoTask.artifactSizeInBytes,
    failureMessage: repoTask.failureMessage,
@@ -27,22 +27,22 @@ export function mapRepoTaskToData(
  };
 }

-function mapRepoTaskAnalysisStatusToData(
+function mapRepoTaskAnalysisStatusToDto(
  analysisStatus: VariantAnalysisRepoStatus,
-): VariantAnalysisRepoStatusData {
+): VariantAnalysisRepoStatusDto {
  switch (analysisStatus) {
    case VariantAnalysisRepoStatus.Pending:
-      return VariantAnalysisRepoStatusData.Pending;
+      return VariantAnalysisRepoStatusDto.Pending;
    case VariantAnalysisRepoStatus.InProgress:
-      return VariantAnalysisRepoStatusData.InProgress;
+      return VariantAnalysisRepoStatusDto.InProgress;
    case VariantAnalysisRepoStatus.Succeeded:
-      return VariantAnalysisRepoStatusData.Succeeded;
+      return VariantAnalysisRepoStatusDto.Succeeded;
    case VariantAnalysisRepoStatus.Failed:
-      return VariantAnalysisRepoStatusData.Failed;
+      return VariantAnalysisRepoStatusDto.Failed;
    case VariantAnalysisRepoStatus.Canceled:
-      return VariantAnalysisRepoStatusData.Canceled;
+      return VariantAnalysisRepoStatusDto.Canceled;
    case VariantAnalysisRepoStatus.TimedOut:
-      return VariantAnalysisRepoStatusData.TimedOut;
+      return VariantAnalysisRepoStatusDto.TimedOut;
    default:
      assertNever(analysisStatus);
  }
--- a/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-dto.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-dto.ts
@@ -1,6 +1,6 @@
-export interface VariantAnalysisRepositoryTaskData {
-  repository: RepositoryData;
-  analysisStatus: VariantAnalysisRepoStatusData;
+export interface VariantAnalysisRepositoryTaskDto {
+  repository: RepositoryDto;
+  analysisStatus: VariantAnalysisRepoStatusDto;
  resultCount?: number;
  artifactSizeInBytes?: number;
  failureMessage?: string;
@@ -9,13 +9,13 @@ export interface VariantAnalysisRepositoryTaskData {
  artifactUrl?: string;
 }

-interface RepositoryData {
+interface RepositoryDto {
  id: number;
  fullName: string;
  private: boolean;
 }

-export enum VariantAnalysisRepoStatusData {
+export enum VariantAnalysisRepoStatusDto {
  Pending = "pending",
  InProgress = "inProgress",
  Succeeded = "succeeded",
--- a/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-store.ts
+++ b/extensions/ql-vscode/src/variant-analysis/repo-tasks-store/repo-tasks-store.ts
@@ -1,8 +1,8 @@
 import { outputJson, readJson } from "fs-extra";
 import { join } from "path";
 import { VariantAnalysisRepositoryTask } from "../shared/variant-analysis";
-import { mapRepoTaskToData } from "./repo-task-to-data-mapper";
-import { mapRepoTaskToDomain } from "./repo-task-to-domain-mapper";
+import { mapRepoTaskToDto } from "./repo-tasks-dto-mapper";
+import { mapRepoTaskToDomainModel } from "./repo-tasks-domain-mapper";

 export const REPO_TASK_FILENAME = "repo_task.json";

@@ -10,7 +10,7 @@ export async function writeRepoTask(
  storageDirectory: string,
  repoTask: VariantAnalysisRepositoryTask,
 ): Promise<void> {
-  const repoTaskData = mapRepoTaskToData(repoTask);
+  const repoTaskData = mapRepoTaskToDto(repoTask);
  await outputJson(join(storageDirectory, REPO_TASK_FILENAME), repoTaskData);
 }

@@ -20,5 +20,5 @@ export async function readRepoTask(
  const repoTaskData = await readJson(
    join(storageDirectory, REPO_TASK_FILENAME),
  );
-  return mapRepoTaskToDomain(repoTaskData);
+  return mapRepoTaskToDomainModel(repoTaskData);
 }
--- a/extensions/ql-vscode/src/variant-analysis/store/repo-states-data-types.ts
+++ b/extensions/ql-vscode/src/variant-analysis/store/repo-states-data-types.ts
@@ -1,12 +0,0 @@
-export interface VariantAnalysisScannedRepositoryStateData {
-  repositoryId: number;
-  downloadStatus: VariantAnalysisScannedRepositoryDownloadData;
-  downloadPercentage?: number;
-}
-
-export enum VariantAnalysisScannedRepositoryDownloadData {
-  Pending = "pending",
-  InProgress = "inProgress",
-  Succeeded = "succeeded",
-  Failed = "failed",
-}
--- a/extensions/ql-vscode/src/variant-analysis/store/repo-states-to-data-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/store/repo-states-to-data-mapper.ts
@@ -1,36 +0,0 @@
-import { assertNever } from "../../pure/helpers-pure";
-import {
-  VariantAnalysisScannedRepositoryDownloadStatus,
-  VariantAnalysisScannedRepositoryState,
-} from "../shared/variant-analysis";
-import {
-  VariantAnalysisScannedRepositoryDownloadData,
-  VariantAnalysisScannedRepositoryStateData,
-} from "./repo-states-data-types";
-
-export function mapRepoStateToData(
-  repoState: VariantAnalysisScannedRepositoryState,
-): VariantAnalysisScannedRepositoryStateData {
-  return {
-    repositoryId: repoState.repositoryId,
-    downloadStatus: processDownloadStatus(repoState.downloadStatus),
-    downloadPercentage: repoState.downloadPercentage,
-  };
-}
-
-function processDownloadStatus(
-  downloadedStatus: VariantAnalysisScannedRepositoryDownloadStatus,
-) {
-  switch (downloadedStatus) {
-    case VariantAnalysisScannedRepositoryDownloadStatus.Pending:
-      return VariantAnalysisScannedRepositoryDownloadData.Pending;
-    case VariantAnalysisScannedRepositoryDownloadStatus.InProgress:
-      return VariantAnalysisScannedRepositoryDownloadData.InProgress;
-    case VariantAnalysisScannedRepositoryDownloadStatus.Succeeded:
-      return VariantAnalysisScannedRepositoryDownloadData.Succeeded;
-    case VariantAnalysisScannedRepositoryDownloadStatus.Failed:
-      return VariantAnalysisScannedRepositoryDownloadData.Failed;
-    default:
-      assertNever(downloadedStatus);
-  }
-}
--- a/extensions/ql-vscode/src/variant-analysis/store/repo-states-to-domain-mapper.ts
+++ b/extensions/ql-vscode/src/variant-analysis/store/repo-states-to-domain-mapper.ts
@@ -1,36 +0,0 @@
-import { assertNever } from "../../pure/helpers-pure";
-import {
-  VariantAnalysisScannedRepositoryState,
-  VariantAnalysisScannedRepositoryDownloadStatus,
-} from "../shared/variant-analysis";
-import {
-  VariantAnalysisScannedRepositoryStateData,
-  VariantAnalysisScannedRepositoryDownloadData,
-} from "./repo-states-data-types";
-
-export function mapRepoStateToDomain(
-  repoState: VariantAnalysisScannedRepositoryStateData,
-): VariantAnalysisScannedRepositoryState {
-  return {
-    repositoryId: repoState.repositoryId,
-    downloadStatus: processDownloadStatus(repoState.downloadStatus),
-    downloadPercentage: repoState.downloadPercentage,
-  };
-}
-
-function processDownloadStatus(
-  downloadedStatus: VariantAnalysisScannedRepositoryDownloadData,
-) {
-  switch (downloadedStatus) {
-    case VariantAnalysisScannedRepositoryDownloadData.Pending:
-      return VariantAnalysisScannedRepositoryDownloadStatus.Pending;
-    case VariantAnalysisScannedRepositoryDownloadData.InProgress:
-      return VariantAnalysisScannedRepositoryDownloadStatus.InProgress;
-    case VariantAnalysisScannedRepositoryDownloadData.Succeeded:
-      return VariantAnalysisScannedRepositoryDownloadStatus.Succeeded;
-    case VariantAnalysisScannedRepositoryDownloadData.Failed:
-      return VariantAnalysisScannedRepositoryDownloadStatus.Failed;
-    default:
-      assertNever(downloadedStatus);
-  }
-}
--- a/extensions/ql-vscode/src/variant-analysis/variant-analysis-manager.ts
+++ b/extensions/ql-vscode/src/variant-analysis/variant-analysis-manager.ts
@@ -71,7 +71,7 @@ import {
  readRepoStates,
  REPO_STATES_FILENAME,
  writeRepoStates,
-} from "./store/repo-states-store";
+} from "./repo-states-store";

 export class VariantAnalysisManager
  extends DisposableObject
--- a/extensions/ql-vscode/src/variant-analysis/variant-analysis-results-manager.ts
+++ b/extensions/ql-vscode/src/variant-analysis/variant-analysis-results-manager.ts
@@ -17,7 +17,7 @@ import {
 import { DisposableObject, DisposeHandler } from "../pure/disposable-object";
 import { EventEmitter } from "vscode";
 import { unzipFile } from "../pure/zip";
-import { readRepoTask, writeRepoTask } from "./store/repo-task-store";
+import { readRepoTask, writeRepoTask } from "./repo-tasks-store";

 type CacheKey = `${number}/${string}`;

--- a/extensions/ql-vscode/src/view/data-extensions-editor/KindInput.tsx
+++ b/extensions/ql-vscode/src/view/data-extensions-editor/KindInput.tsx
@@ -0,0 +1,48 @@
+import * as React from "react";
+import { useCallback, useEffect } from "react";
+import styled from "styled-components";
+import { VSCodeDropdown, VSCodeOption } from "@vscode/webview-ui-toolkit/react";
+
+import type { ModeledMethod } from "../../data-extensions-editor/modeled-method";
+
+const Dropdown = styled(VSCodeDropdown)`
+  width: 100%;
+`;
+
+type Props = {
+  kinds: Array<ModeledMethod["kind"]>;
+
+  value: ModeledMethod["kind"] | undefined;
+  onChange: (value: ModeledMethod["kind"]) => void;
+};
+
+export const KindInput = ({ kinds, value, onChange }: Props) => {
+  const handleInput = useCallback(
+    (e: InputEvent) => {
+      const target = e.target as HTMLSelectElement;
+
+      onChange(target.value as ModeledMethod["kind"]);
+    },
+    [onChange],
+  );
+
+  useEffect(() => {
+    if (value === undefined && kinds.length > 0) {
+      onChange(kinds[0]);
+    }
+
+    if (value !== undefined && !kinds.includes(value)) {
+      onChange(kinds[0]);
+    }
+  }, [value, kinds, onChange]);
+
+  return (
+    <Dropdown value={value} onInput={handleInput}>
+      {kinds.map((kind) => (
+        <VSCodeOption key={kind} value={kind}>
+          {kind}
+        </VSCodeOption>
+      ))}
+    </Dropdown>
+  );
+};
--- a/extensions/ql-vscode/src/view/data-extensions-editor/MethodRow.tsx
+++ b/extensions/ql-vscode/src/view/data-extensions-editor/MethodRow.tsx
@@ -3,7 +3,6 @@ import {
  VSCodeDataGridRow,
  VSCodeDropdown,
  VSCodeOption,
-  VSCodeTextField,
 } from "@vscode/webview-ui-toolkit/react";
 import * as React from "react";
 import { useCallback, useMemo } from "react";
@@ -15,15 +14,13 @@ import {
  ModeledMethod,
  ModeledMethodType,
 } from "../../data-extensions-editor/modeled-method";
+import { KindInput } from "./KindInput";
+import { extensiblePredicateDefinitions } from "../../data-extensions-editor/predicates";

 const Dropdown = styled(VSCodeDropdown)`
  width: 100%;
 `;

-const TextField = styled(VSCodeTextField)`
-  width: 100%;
-`;
-
 type SupportedUnsupportedSpanProps = {
  supported: boolean;
 };
@@ -107,17 +104,15 @@ export const MethodRow = ({
    },
    [onChange, externalApiUsage, modeledMethod],
  );
-  const handleKindInput = useCallback(
-    (e: InputEvent) => {
+  const handleKindChange = useCallback(
+    (kind: string) => {
      if (!modeledMethod) {
        return;
      }

-      const target = e.target as HTMLSelectElement;
-
      onChange(externalApiUsage, {
        ...modeledMethod,
-        kind: target.value as ModeledMethod["kind"],
+        kind,
      });
    },
    [onChange, externalApiUsage, modeledMethod],
@@ -130,6 +125,11 @@ export const MethodRow = ({
    });
  }, [externalApiUsage]);

+  const predicate =
+    modeledMethod?.type && modeledMethod.type !== "none"
+      ? extensiblePredicateDefinitions[modeledMethod.type]
+      : undefined;
+
  return (
    <VSCodeDataGridRow>
      <VSCodeDataGridCell gridColumn={1}>
@@ -195,10 +195,13 @@ export const MethodRow = ({
          )}
      </VSCodeDataGridCell>
      <VSCodeDataGridCell gridColumn={7}>
-        {modeledMethod?.type &&
-          ["source", "sink", "summary"].includes(modeledMethod?.type) && (
-            <TextField value={modeledMethod?.kind} onInput={handleKindInput} />
-          )}
+        {predicate?.supportedKinds && (
+          <KindInput
+            kinds={predicate.supportedKinds}
+            value={modeledMethod?.kind}
+            onChange={handleKindChange}
+          />
+        )}
      </VSCodeDataGridCell>
    </VSCodeDataGridRow>
  );
--- a/extensions/ql-vscode/test/unit-tests/data-extensions-editor/yaml.test.ts
+++ b/extensions/ql-vscode/test/unit-tests/data-extensions-editor/yaml.test.ts
@@ -149,14 +149,14 @@ describe("loadDataExtensionYaml", () => {
  });

  it("returns undefined if given a string", () => {
-    const data = loadDataExtensionYaml(`extensions:
+    expect(() =>
+      loadDataExtensionYaml(`extensions:
  - addsTo:
      pack: codeql/java-all
      extensible: sinkModel
    data:
      - ["org.sql2o","Connection",true,"createQuery","(String)","","Argument[0]","sql","manual"]
-`);
-
-    expect(data).toBeUndefined();
+`),
+    ).toThrow("Invalid data extension YAML:  must be object");
  });
 });
--- a/extensions/ql-vscode/test/vscode-tests/activated-extension/databases/db-panel.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/activated-extension/databases/db-panel.test.ts
@@ -53,7 +53,7 @@ describe("Db panel UI commands", () => {
  it.skip("should add new local db list", async () => {
    // Add db list
    jest.spyOn(window, "showQuickPick").mockResolvedValue({
-      kind: DbListKind.Local,
+      databaseKind: DbListKind.Local,
    } as AddListQuickPickItem);
    jest.spyOn(window, "showInputBox").mockResolvedValue("my-list-1");
    await commandManager.execute(
@@ -73,7 +73,7 @@ describe("Db panel UI commands", () => {
  it("should add new remote repository", async () => {
    // Add db
    jest.spyOn(window, "showQuickPick").mockResolvedValue({
-      kind: "repo",
+      remoteDatabaseKind: "repo",
    } as RemoteDatabaseQuickPickItem);

    jest.spyOn(window, "showInputBox").mockResolvedValue("owner1/repo1");
@@ -96,7 +96,7 @@ describe("Db panel UI commands", () => {
  it("should add new remote owner", async () => {
    // Add owner
    jest.spyOn(window, "showQuickPick").mockResolvedValue({
-      kind: "owner",
+      remoteDatabaseKind: "owner",
    } as RemoteDatabaseQuickPickItem);

    jest.spyOn(window, "showInputBox").mockResolvedValue("owner1");
--- a/extensions/ql-vscode/test/vscode-tests/activated-extension/variant-analysis/variant-analysis-manager.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/activated-extension/variant-analysis/variant-analysis-manager.test.ts
@@ -48,7 +48,7 @@ import { mockedObject } from "../../utils/mocking.helpers";
 import {
  REPO_STATES_FILENAME,
  writeRepoStates,
-} from "../../../../src/variant-analysis/store/repo-states-store";
+} from "../../../../src/variant-analysis/repo-states-store";

 // up to 3 minutes per test
 jest.setTimeout(3 * 60 * 1000);
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/databaseFetcher.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/databaseFetcher.test.ts
@@ -16,8 +16,6 @@ import {
 } from "../global.helper";
 import { createMockCommandManager } from "../../__mocks__/commandsMock";

-jest.setTimeout(60_000);
-
 /**
 * Run various integration tests for databases
 */
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/helpers.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/helpers.test.ts
@@ -4,9 +4,6 @@ import { CodeQLCliServer } from "../../../src/cli";
 import { tryGetQueryMetadata } from "../../../src/helpers";
 import { getActivatedExtension } from "../global.helper";

-// up to 3 minutes per test
-jest.setTimeout(3 * 60 * 1000);
-
 describe("helpers (with CLI)", () => {
  const baseDir = __dirname;

--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/jest.config.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/jest.config.ts
@@ -6,6 +6,9 @@ const config: Config = {
  ...baseConfig,
  runner: "<rootDir>/../jest-runner-installed-extensions.ts",
  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
+  // CLI integration tests call into the CLI and execute queries, so these are expected to take a lot longer
+  // than the default 5 seconds.
+  testTimeout: 180_000, // 3 minutes
 };

 export default config;
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/legacy-query.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/legacy-query.test.ts
@@ -98,8 +98,6 @@ const db: messages.Dataset = {
  workingSet: "default",
 };

-jest.setTimeout(60_000);
-
 describeWithCodeQL()("using the legacy query server", () => {
  const nullProgressReporter: ProgressReporter = {
    report: () => {
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/new-query.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/new-query.test.ts
@@ -104,8 +104,6 @@ const nullProgressReporter: ProgressReporter = {
  },
 };

-jest.setTimeout(20_000);
-
 describeWithCodeQL()("using the new query server", () => {
  let qs: qsClient.QueryServerClient;
  let cliServer: cli.CodeQLCliServer;
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/packaging.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/packaging.test.ts
@@ -12,9 +12,6 @@ import {
 import { mockedQuickPickItem } from "../utils/mocking.helpers";
 import { getActivatedExtension } from "../global.helper";

-// up to 3 minutes per test
-jest.setTimeout(3 * 60 * 1000);
-
 describe("Packaging commands", () => {
  let cli: CodeQLCliServer;
  const progress = jest.fn();
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/queries.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/queries.test.ts
@@ -27,8 +27,6 @@ import { QueryResultType } from "../../../src/pure/new-messages";
 import { createVSCodeCommandManager } from "../../../src/common/vscode/commands";
 import { AllCommands, QueryServerCommands } from "../../../src/common/commands";

-jest.setTimeout(20_000);
-
 /**
 * Integration tests for queries
 */
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/run-cli.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/run-cli.test.ts
@@ -14,8 +14,6 @@ import { KeyType } from "../../../src/contextual/keyType";
 import { faker } from "@faker-js/faker";
 import { getActivatedExtension } from "../global.helper";

-jest.setTimeout(60_000);
-
 /**
 * Perform proper integration tests by running the CLI
 */
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/skeleton-query-wizard.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/skeleton-query-wizard.test.ts
@@ -20,8 +20,7 @@ import {
 } from "../../../src/local-databases";
 import * as databaseFetcher from "../../../src/databaseFetcher";
 import { createMockDB } from "../../factories/databases/databases";
-
-jest.setTimeout(40_000);
+import { asError } from "../../../src/pure/helpers-pure";

 describe("SkeletonQueryWizard", () => {
  let mockCli: CodeQLCliServer;
@@ -306,8 +305,15 @@ describe("SkeletonQueryWizard", () => {
  describe("findDatabaseItemByNwo", () => {
    describe("when the item exists", () => {
      it("should return the database item", async () => {
-        const mockDbItem = createMockDB(dir);
-        const mockDbItem2 = createMockDB(dir);
+        const mockDbItem = createMockDB(dir, {
+          language: "ruby",
+          dateAdded: 123,
+        } as FullDatabaseOptions);
+        const mockDbItem2 = createMockDB(dir, {
+          language: "javascript",
+        } as FullDatabaseOptions);
+
+        jest.spyOn(mockDbItem, "name", "get").mockReturnValue("mock-name");

        const databaseItem = await wizard.findDatabaseItemByNwo(
          mockDbItem.language,
@@ -315,8 +321,40 @@ describe("SkeletonQueryWizard", () => {
          [mockDbItem, mockDbItem2],
        );

-        expect(databaseItem!.language).toEqual(mockDbItem.language);
-        expect(databaseItem!.name).toEqual(mockDbItem.name);
+        expect(JSON.stringify(databaseItem)).toEqual(
+          JSON.stringify(mockDbItem),
+        );
+      });
+
+      it("should ignore databases with errors", async () => {
+        const mockDbItem = createMockDB(dir, {
+          language: "ruby",
+          dateAdded: 123,
+        } as FullDatabaseOptions);
+        const mockDbItem2 = createMockDB(dir, {
+          language: "javascript",
+        } as FullDatabaseOptions);
+        const mockDbItem3 = createMockDB(dir, {
+          language: "ruby",
+          dateAdded: 345,
+        } as FullDatabaseOptions);
+
+        jest.spyOn(mockDbItem, "name", "get").mockReturnValue("mock-name");
+        jest.spyOn(mockDbItem3, "name", "get").mockReturnValue(mockDbItem.name);
+
+        jest
+          .spyOn(mockDbItem, "error", "get")
+          .mockReturnValue(asError("database go boom!"));
+
+        const databaseItem = await wizard.findDatabaseItemByNwo(
+          mockDbItem.language,
+          mockDbItem.name,
+          [mockDbItem, mockDbItem2, mockDbItem3],
+        );
+
+        expect(JSON.stringify(databaseItem)).toEqual(
+          JSON.stringify(mockDbItem3),
+        );
      });
    });

@@ -353,6 +391,32 @@ describe("SkeletonQueryWizard", () => {

        expect(databaseItem).toEqual(mockDbItem);
      });
+
+      it("should ignore databases with errors", async () => {
+        const mockDbItem = createMockDB(dir, {
+          language: "ruby",
+        } as FullDatabaseOptions);
+        const mockDbItem2 = createMockDB(dir, {
+          language: "javascript",
+        } as FullDatabaseOptions);
+        const mockDbItem3 = createMockDB(dir, {
+          language: "ruby",
+        } as FullDatabaseOptions);
+
+        jest
+          .spyOn(mockDbItem, "error", "get")
+          .mockReturnValue(asError("database go boom!"));
+
+        const databaseItem = await wizard.findDatabaseItemByLanguage("ruby", [
+          mockDbItem,
+          mockDbItem2,
+          mockDbItem3,
+        ]);
+
+        expect(JSON.stringify(databaseItem)).toEqual(
+          JSON.stringify(mockDbItem3),
+        );
+      });
    });

    describe("when the item doesn't exist", () => {
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/sourcemap.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/sourcemap.test.ts
@@ -5,8 +5,6 @@ import { readFile, writeFile, ensureDir, copy } from "fs-extra";
 import { createVSCodeCommandManager } from "../../../src/common/vscode/commands";
 import { AllCommands } from "../../../src/common/commands";

-jest.setTimeout(20_000);
-
 /**
 * Integration tests for queries
 */
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts
@@ -29,9 +29,6 @@ import { QueryLanguage } from "../../../../src/common/query-language";
 import { readBundledPack } from "../../utils/bundled-pack-helpers";
 import { load } from "js-yaml";

-// up to 3 minutes per test
-jest.setTimeout(3 * 60 * 1000);
-
 describe("Variant Analysis Manager", () => {
  let cli: CodeQLCliServer;
  let cancellationTokenSource: CancellationTokenSource;
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-submission-integration.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-submission-integration.test.ts
@@ -15,8 +15,6 @@ import { getActivatedExtension } from "../../global.helper";
 import { createVSCodeCommandManager } from "../../../../src/common/vscode/commands";
 import { AllCommands } from "../../../../src/common/commands";

-jest.setTimeout(30_000);
-
 const mockServer = new MockGitHubApiServer();
 beforeAll(() => mockServer.startServer());
 afterEach(() => mockServer.unloadScenario());
--- a/extensions/ql-vscode/test/vscode-tests/no-workspace/data-extensions-editor/extension-pack-picker.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/no-workspace/data-extensions-editor/extension-pack-picker.test.ts
@@ -1,4 +1,8 @@
-import { QuickPickItem, window } from "vscode";
+import { CancellationTokenSource, QuickPickItem, window } from "vscode";
+import { dump as dumpYaml, load as loadYaml } from "js-yaml";
+import { outputFile, readFile } from "fs-extra";
+import { join } from "path";
+import { dir } from "tmp-promise";

 import { pickExtensionPackModelFile } from "../../../../src/data-extensions-editor/extension-pack-picker";
 import { QlpacksInfo, ResolveExtensionsResult } from "../../../../src/cli";
@@ -21,14 +25,32 @@ describe("pickExtensionPackModelFile", () => {
      ],
    },
  };
+  const databaseItem = {
+    name: "github/vscode-codeql",
+  };
+
+  const cancellationTokenSource = new CancellationTokenSource();
+  const token = cancellationTokenSource.token;

  const progress = jest.fn();
  let showQuickPickSpy: jest.SpiedFunction<typeof window.showQuickPick>;
+  let showInputBoxSpy: jest.SpiedFunction<typeof window.showInputBox>;
+  let showAndLogErrorMessageSpy: jest.SpiedFunction<
+    typeof helpers.showAndLogErrorMessage
+  >;

  beforeEach(() => {
    showQuickPickSpy = jest
      .spyOn(window, "showQuickPick")
      .mockRejectedValue(new Error("Unexpected call to showQuickPick"));
+    showInputBoxSpy = jest
+      .spyOn(window, "showInputBox")
+      .mockRejectedValue(new Error("Unexpected call to showInputBox"));
+    showAndLogErrorMessageSpy = jest
+      .spyOn(helpers, "showAndLogErrorMessage")
+      .mockImplementation((msg) => {
+        throw new Error(`Unexpected call to showAndLogErrorMessage: ${msg}`);
+      });
  });

  it("allows choosing an existing extension pack and model file", async () => {
@@ -43,9 +65,14 @@ describe("pickExtensionPackModelFile", () => {
      file: "/a/b/c/my-extension-pack/models/model.yml",
    } as QuickPickItem);

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      "/a/b/c/my-extension-pack/models/model.yml",
-    );
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual("/a/b/c/my-extension-pack/models/model.yml");
    expect(showQuickPickSpy).toHaveBeenCalledTimes(2);
    expect(showQuickPickSpy).toHaveBeenCalledWith(
      [
@@ -57,10 +84,15 @@ describe("pickExtensionPackModelFile", () => {
          label: "another-extension-pack",
          extensionPack: "another-extension-pack",
        },
+        {
+          label: expect.stringMatching(/create/i),
+          extensionPack: null,
+        },
      ],
      {
        title: expect.any(String),
      },
+      token,
    );
    expect(showQuickPickSpy).toHaveBeenCalledWith(
      [
@@ -68,10 +100,15 @@ describe("pickExtensionPackModelFile", () => {
          label: "models/model.yml",
          file: "/a/b/c/my-extension-pack/models/model.yml",
        },
+        {
+          label: expect.stringMatching(/create/i),
+          file: null,
+        },
      ],
      {
        title: expect.any(String),
      },
+      token,
    );
    expect(cliServer.resolveQlpacks).toHaveBeenCalledTimes(1);
    expect(cliServer.resolveQlpacks).toHaveBeenCalledWith([], true);
@@ -82,39 +119,235 @@ describe("pickExtensionPackModelFile", () => {
    );
  });

+  it("allows choosing an existing extension pack and creating a new model file", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        ...qlPacks,
+        "my-extension-pack": [tmpDir.path],
+      },
+      {
+        models: extensions.models,
+        data: {
+          [tmpDir.path]: [
+            {
+              file: join(tmpDir.path, "models/model.yml"),
+              index: 0,
+              predicate: "sinkModel",
+            },
+          ],
+        },
+      },
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "create",
+      file: null,
+    } as QuickPickItem);
+    showInputBoxSpy.mockResolvedValue("models/my-model.yml");
+
+    await outputFile(
+      join(tmpDir.path, "codeql-pack.yml"),
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: ["models/**/*.yml"],
+      }),
+    );
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(join(tmpDir.path, "models/my-model.yml"));
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(2);
+    expect(showQuickPickSpy).toHaveBeenCalledWith(
+      [
+        {
+          label: "my-extension-pack",
+          extensionPack: "my-extension-pack",
+        },
+        {
+          label: "another-extension-pack",
+          extensionPack: "another-extension-pack",
+        },
+        {
+          label: expect.stringMatching(/create/i),
+          extensionPack: null,
+        },
+      ],
+      {
+        title: expect.any(String),
+      },
+      token,
+    );
+    expect(showQuickPickSpy).toHaveBeenCalledWith(
+      [
+        {
+          label: "models/model.yml",
+          file: join(tmpDir.path, "models/model.yml"),
+        },
+        {
+          label: expect.stringMatching(/create/i),
+          file: null,
+        },
+      ],
+      {
+        title: expect.any(String),
+      },
+      token,
+    );
+    expect(showInputBoxSpy).toHaveBeenCalledWith(
+      {
+        title: expect.any(String),
+        value: "models/github.vscode-codeql.model.yml",
+        validateInput: expect.any(Function),
+      },
+      token,
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalledTimes(1);
+    expect(cliServer.resolveQlpacks).toHaveBeenCalledWith([], true);
+    expect(cliServer.resolveExtensions).toHaveBeenCalledTimes(1);
+    expect(cliServer.resolveExtensions).toHaveBeenCalledWith(tmpDir.path, []);
+  });
+
  it("allows cancelling the extension pack prompt", async () => {
    const cliServer = mockCliServer(qlPacks, extensions);

    showQuickPickSpy.mockResolvedValueOnce(undefined);

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      undefined,
-    );
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
    expect(cliServer.resolveExtensions).not.toHaveBeenCalled();
  });

-  it("does not show any options when there are no extension packs", async () => {
+  it("allows user to create an extension pack when there are no extension packs", async () => {
+    const cliServer = mockCliServer({}, { models: [], data: {} });
+
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "codeql-custom-queries-java",
+      path: tmpDir.path,
+    } as QuickPickItem);
+    showInputBoxSpy.mockResolvedValueOnce("my-extension-pack");
+    showInputBoxSpy.mockResolvedValue("models/my-model.yml");
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(join(tmpDir.path, "my-extension-pack", "models", "my-model.yml"));
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).toHaveBeenCalledTimes(2);
+    expect(showInputBoxSpy).toHaveBeenCalledWith(
+      {
+        title: expect.stringMatching(/extension pack/i),
+        prompt: expect.stringMatching(/extension pack/i),
+        placeHolder: expect.stringMatching(/github\/vscode-codeql-extensions/),
+        validateInput: expect.any(Function),
+      },
+      token,
+    );
+    expect(showInputBoxSpy).toHaveBeenCalledWith(
+      {
+        title: expect.stringMatching(/model file/),
+        value: "models/github.vscode-codeql.model.yml",
+        validateInput: expect.any(Function),
+      },
+      token,
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+
+    expect(
+      loadYaml(
+        await readFile(
+          join(tmpDir.path, "my-extension-pack", "codeql-pack.yml"),
+          "utf8",
+        ),
+      ),
+    ).toEqual({
+      name: "my-extension-pack",
+      version: "0.0.0",
+      library: true,
+      extensionTargets: {
+        "codeql/java-all": "*",
+      },
+      dataExtensions: ["models/**/*.yml"],
+    });
+  });
+
+  it("allows cancelling the workspace folder selection", async () => {
    const cliServer = mockCliServer({}, { models: [], data: {} });

    showQuickPickSpy.mockResolvedValueOnce(undefined);

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      undefined,
-    );
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
-    expect(showQuickPickSpy).toHaveBeenCalledWith([], {
-      title: expect.any(String),
-    });
+    expect(showInputBoxSpy).toHaveBeenCalledTimes(0);
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).not.toHaveBeenCalled();
+  });
+
+  it("allows cancelling the extension pack name input", async () => {
+    const cliServer = mockCliServer({}, { models: [], data: {} });
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "codeql-custom-queries-java",
+      path: "/a/b/c",
+    } as QuickPickItem);
+    showInputBoxSpy.mockResolvedValueOnce(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).toHaveBeenCalledTimes(1);
    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
    expect(cliServer.resolveExtensions).not.toHaveBeenCalled();
  });

  it("shows an error when an extension pack resolves to more than 1 location", async () => {
-    const showAndLogErrorMessageSpy = jest.spyOn(
-      helpers,
-      "showAndLogErrorMessage",
-    );
+    showAndLogErrorMessageSpy.mockResolvedValue(undefined);

    const cliServer = mockCliServer(
      {
@@ -131,9 +364,14 @@ describe("pickExtensionPackModelFile", () => {
      extensionPack: "my-extension-pack",
    } as QuickPickItem);

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      undefined,
-    );
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
    expect(showAndLogErrorMessageSpy).toHaveBeenCalledTimes(1);
    expect(showAndLogErrorMessageSpy).toHaveBeenCalledWith(
      expect.stringMatching(/could not be resolved to a single location/),
@@ -153,47 +391,468 @@ describe("pickExtensionPackModelFile", () => {
    } as QuickPickItem);
    showQuickPickSpy.mockResolvedValueOnce(undefined);

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      undefined,
-    );
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
    expect(cliServer.resolveExtensions).toHaveBeenCalled();
  });

-  it("does not show any options when there are no model files", async () => {
-    const cliServer = mockCliServer(qlPacks, { models: [], data: {} });
+  it("shows create input box when there are no model files", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    await outputFile(
+      join(tmpDir.path, "codeql-pack.yml"),
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: ["models/**/*.yml"],
+      }),
+    );

    showQuickPickSpy.mockResolvedValueOnce({
      label: "my-extension-pack",
      extensionPack: "my-extension-pack",
    } as QuickPickItem);
    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showInputBoxSpy.mockResolvedValue("models/my-model.yml");

-    expect(await pickExtensionPackModelFile(cliServer, progress)).toEqual(
-      undefined,
-    );
-    expect(showQuickPickSpy).toHaveBeenCalledTimes(2);
-    expect(showQuickPickSpy).toHaveBeenCalledWith(
-      [
-        {
-          label: "my-extension-pack",
-          extensionPack: "my-extension-pack",
-        },
-        {
-          label: "another-extension-pack",
-          extensionPack: "another-extension-pack",
-        },
-      ],
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(join(tmpDir.path, "models/my-model.yml"));
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).toHaveBeenCalledWith(
      {
        title: expect.any(String),
+        value: "models/github.vscode-codeql.model.yml",
+        validateInput: expect.any(Function),
      },
+      token,
    );
-    expect(showQuickPickSpy).toHaveBeenCalledWith([], {
-      title: expect.any(String),
-    });
    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
    expect(cliServer.resolveExtensions).toHaveBeenCalled();
  });
+
+  it("shows an error when there is no pack YAML file", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showAndLogErrorMessageSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).not.toHaveBeenCalled();
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledTimes(1);
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledWith(
+      expect.stringMatching(/codeql-pack\.yml/),
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+  });
+
+  it("shows an error when the pack YAML file is invalid", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    await outputFile(join(tmpDir.path, "codeql-pack.yml"), dumpYaml("java"));
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showAndLogErrorMessageSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).not.toHaveBeenCalled();
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledTimes(1);
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledWith(
+      expect.stringMatching(/Could not parse/),
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+  });
+
+  it("shows an error when the pack YAML does not contain dataExtensions", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    await outputFile(
+      join(tmpDir.path, "codeql-pack.yml"),
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+      }),
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showAndLogErrorMessageSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).not.toHaveBeenCalled();
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledTimes(1);
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledWith(
+      expect.stringMatching(/Expected 'dataExtensions' to be/),
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+  });
+
+  it("shows an error when the pack YAML dataExtensions is invalid", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    await outputFile(
+      join(tmpDir.path, "codeql-pack.yml"),
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: {
+          "codeql/java-all": "invalid",
+        },
+      }),
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showAndLogErrorMessageSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).not.toHaveBeenCalled();
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledTimes(1);
+    expect(showAndLogErrorMessageSpy).toHaveBeenCalledWith(
+      expect.stringMatching(/Expected 'dataExtensions' to be/),
+    );
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+  });
+
+  it("allows cancelling the new file input box", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    await outputFile(
+      join(tmpDir.path, "codeql-pack.yml"),
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: ["models/**/*.yml"],
+      }),
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showInputBoxSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+    expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+    expect(showInputBoxSpy).toHaveBeenCalledTimes(1);
+    expect(cliServer.resolveQlpacks).toHaveBeenCalled();
+    expect(cliServer.resolveExtensions).toHaveBeenCalled();
+  });
+
+  it("validates the pack name input", async () => {
+    const cliServer = mockCliServer({}, { models: [], data: {} });
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "a",
+      path: "/a/b/c",
+    } as QuickPickItem);
+    showInputBoxSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+
+    const validateFile = showInputBoxSpy.mock.calls[0][0]?.validateInput;
+    expect(validateFile).toBeDefined();
+    if (!validateFile) {
+      return;
+    }
+
+    expect(await validateFile("")).toEqual("Pack name must not be empty");
+    expect(await validateFile("a".repeat(129))).toEqual(
+      "Pack name must be no longer than 128 characters",
+    );
+    expect(await validateFile("github/vscode-codeql/extensions")).toEqual(
+      "Invalid package name: a pack name must contain only lowercase ASCII letters, ASCII digits, and hyphens",
+    );
+    expect(await validateFile("VSCODE")).toEqual(
+      "Invalid package name: a pack name must contain only lowercase ASCII letters, ASCII digits, and hyphens",
+    );
+    expect(await validateFile("github/vscode-codeql-")).toEqual(
+      "Invalid package name: a pack name must contain only lowercase ASCII letters, ASCII digits, and hyphens",
+    );
+    expect(
+      await validateFile("github/vscode-codeql-extensions"),
+    ).toBeUndefined();
+    expect(await validateFile("vscode-codeql-extensions")).toBeUndefined();
+  });
+
+  it("validates the file input", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    const qlpackPath = join(tmpDir.path, "codeql-pack.yml");
+    await outputFile(
+      qlpackPath,
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: ["models/**/*.yml", "data/**/*.yml"],
+      }),
+    );
+    await outputFile(
+      join(tmpDir.path, "models", "model.yml"),
+      dumpYaml({
+        extensions: [],
+      }),
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showInputBoxSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+
+    const validateFile = showInputBoxSpy.mock.calls[0][0]?.validateInput;
+    expect(validateFile).toBeDefined();
+    if (!validateFile) {
+      return;
+    }
+
+    expect(await validateFile("")).toEqual("File name must not be empty");
+    expect(await validateFile("models/model.yml")).toEqual(
+      "File already exists",
+    );
+    expect(await validateFile("../model.yml")).toEqual(
+      "File must be in the extension pack",
+    );
+    expect(await validateFile("/home/user/model.yml")).toEqual(
+      "File must be in the extension pack",
+    );
+    expect(await validateFile("model.yml")).toEqual(
+      `File must match one of the patterns in 'dataExtensions' in ${qlpackPath}`,
+    );
+    expect(await validateFile("models/model.yaml")).toEqual(
+      `File must match one of the patterns in 'dataExtensions' in ${qlpackPath}`,
+    );
+    expect(await validateFile("models/my-model.yml")).toBeUndefined();
+    expect(await validateFile("models/nested/model.yml")).toBeUndefined();
+    expect(await validateFile("data/model.yml")).toBeUndefined();
+  });
+
+  it("allows the dataExtensions to be a string", async () => {
+    const tmpDir = await dir({
+      unsafeCleanup: true,
+    });
+
+    const cliServer = mockCliServer(
+      {
+        "my-extension-pack": [tmpDir.path],
+      },
+      { models: [], data: {} },
+    );
+
+    const qlpackPath = join(tmpDir.path, "codeql-pack.yml");
+    await outputFile(
+      qlpackPath,
+      dumpYaml({
+        name: "my-extension-pack",
+        version: "0.0.0",
+        library: true,
+        extensionTargets: {
+          "codeql/java-all": "*",
+        },
+        dataExtensions: "models/**/*.yml",
+      }),
+    );
+    await outputFile(
+      join(tmpDir.path, "models", "model.yml"),
+      dumpYaml({
+        extensions: [],
+      }),
+    );
+
+    showQuickPickSpy.mockResolvedValueOnce({
+      label: "my-extension-pack",
+      extensionPack: "my-extension-pack",
+    } as QuickPickItem);
+    showQuickPickSpy.mockResolvedValueOnce(undefined);
+    showInputBoxSpy.mockResolvedValue(undefined);
+
+    expect(
+      await pickExtensionPackModelFile(
+        cliServer,
+        databaseItem,
+        progress,
+        token,
+      ),
+    ).toEqual(undefined);
+
+    const validateFile = showInputBoxSpy.mock.calls[0][0]?.validateInput;
+    expect(validateFile).toBeDefined();
+    if (!validateFile) {
+      return;
+    }
+
+    expect(await validateFile("models/my-model.yml")).toBeUndefined();
+  });
 });

 function mockCliServer(
--- a/extensions/ql-vscode/test/vscode-tests/no-workspace/data-extensions-editor/external-api-usage-query.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/no-workspace/data-extensions-editor/external-api-usage-query.test.ts
@@ -8,8 +8,12 @@ import { DatabaseKind } from "../../../../src/local-databases";
 import * as queryResolver from "../../../../src/contextual/queryResolver";
 import { file } from "tmp-promise";
 import { QueryResultType } from "../../../../src/pure/new-messages";
-import { readFile } from "fs-extra";
+import { readdir, readFile } from "fs-extra";
 import { load } from "js-yaml";
+import { dirname, join } from "path";
+import { fetchExternalApisQuery } from "../../../../src/data-extensions-editor/queries/java";
+import * as helpers from "../../../../src/helpers";
+import { RedactableError } from "../../../../src/pure/errors";

 function createMockUri(path = "/a/b/c/foo"): Uri {
  return {
@@ -39,11 +43,6 @@ describe("runQuery", () => {
        resolveQlpacks: jest.fn().mockResolvedValue({
          "my/java-extensions": "/a/b/c/",
        }),
-        resolveQueriesInSuite: jest
-          .fn()
-          .mockResolvedValue([
-            "/home/github/codeql/java/ql/src/Telemetry/FetchExternalAPIs.ql",
-          ]),
      },
      queryRunner: {
        createQueryRun: jest.fn().mockReturnValue({
@@ -56,7 +55,6 @@ describe("runQuery", () => {
        }),
        logger: createMockLogger(),
      },
-      logger: createMockLogger(),
      databaseItem: {
        databaseUri: createMockUri("/a/b/c/src.zip"),
        contents: {
@@ -77,37 +75,12 @@ describe("runQuery", () => {

    expect(result?.resultType).toEqual(QueryResultType.SUCCESS);

-    expect(options.cliServer.resolveQueriesInSuite).toHaveBeenCalledWith(
-      expect.anything(),
-      [],
-    );
-    const suiteFile = options.cliServer.resolveQueriesInSuite.mock.calls[0][0];
-    const suiteFileContents = await readFile(suiteFile, "utf8");
-    const suiteYaml = load(suiteFileContents);
-    expect(suiteYaml).toEqual([
-      {
-        from: "codeql/java-all",
-        queries: ".",
-        include: {
-          id: "java/telemetry/fetch-external-apis",
-        },
-      },
-      {
-        from: "codeql/java-queries",
-        queries: ".",
-        include: {
-          id: "java/telemetry/fetch-external-apis",
-        },
-      },
-    ]);
-
    expect(options.cliServer.resolveQlpacks).toHaveBeenCalledTimes(1);
    expect(options.cliServer.resolveQlpacks).toHaveBeenCalledWith([], true);
    expect(options.queryRunner.createQueryRun).toHaveBeenCalledWith(
      "/a/b/c/src.zip",
      {
-        queryPath:
-          "/home/github/codeql/java/ql/src/Telemetry/FetchExternalAPIs.ql",
+        queryPath: expect.stringMatching(/FetchExternalApis\.ql/),
        quickEvalPosition: undefined,
      },
      false,
@@ -117,6 +90,40 @@ describe("runQuery", () => {
      undefined,
      undefined,
    );
+
+    const queryPath =
+      options.queryRunner.createQueryRun.mock.calls[0][1].queryPath;
+    const queryDirectory = dirname(queryPath);
+
+    const queryFiles = await readdir(queryDirectory);
+    expect(queryFiles.sort()).toEqual(
+      ["codeql-pack.yml", "FetchExternalApis.ql", "ExternalApi.qll"].sort(),
+    );
+
+    const suiteFileContents = await readFile(
+      join(queryDirectory, "codeql-pack.yml"),
+      "utf8",
+    );
+    const suiteYaml = load(suiteFileContents);
+    expect(suiteYaml).toEqual({
+      name: "codeql/external-api-usage",
+      version: "0.0.0",
+      dependencies: {
+        "codeql/java-all": "*",
+      },
+    });
+
+    expect(
+      await readFile(join(queryDirectory, "FetchExternalApis.ql"), "utf8"),
+    ).toEqual(fetchExternalApisQuery.mainQuery);
+
+    for (const [filename, contents] of Object.entries(
+      fetchExternalApisQuery.dependencies ?? {},
+    )) {
+      expect(await readFile(join(queryDirectory, filename), "utf8")).toEqual(
+        contents,
+      );
+    }
  });
 });

@@ -127,17 +134,27 @@ describe("readQueryResults", () => {
      bqrsDecode: jest.fn(),
    },
    bqrsPath: "/tmp/results.bqrs",
-    logger: createMockLogger(),
  };

+  let showAndLogExceptionWithTelemetrySpy: jest.SpiedFunction<
+    typeof helpers.showAndLogExceptionWithTelemetry
+  >;
+
+  beforeEach(() => {
+    showAndLogExceptionWithTelemetrySpy = jest.spyOn(
+      helpers,
+      "showAndLogExceptionWithTelemetry",
+    );
+  });
+
  it("returns undefined when there are no results", async () => {
    options.cliServer.bqrsInfo.mockResolvedValue({
      "result-sets": [],
    });

    expect(await readQueryResults(options)).toBeUndefined();
-    expect(options.logger.log).toHaveBeenCalledWith(
-      expect.stringMatching(/Expected exactly one result set/),
+    expect(showAndLogExceptionWithTelemetrySpy).toHaveBeenCalledWith(
+      expect.any(RedactableError),
    );
  });

@@ -166,8 +183,8 @@ describe("readQueryResults", () => {
    });

    expect(await readQueryResults(options)).toBeUndefined();
-    expect(options.logger.log).toHaveBeenCalledWith(
-      expect.stringMatching(/Expected exactly one result set/),
+    expect(showAndLogExceptionWithTelemetrySpy).toHaveBeenCalledWith(
+      expect.any(RedactableError),
    );
  });

--- a/extensions/ql-vscode/test/vscode-tests/no-workspace/data/variant-analysis/workspace-query-history.json
+++ b/extensions/ql-vscode/test/vscode-tests/no-workspace/data/variant-analysis/workspace-query-history.json
@@ -7,7 +7,11 @@
      "completed": true,
      "variantAnalysis": {
        "id": 98574321397,
-        "controllerRepoId": 128321,
+        "controllerRepo": {
+          "id": 128321,
+          "fullName": "github/codeql",
+          "private": false
+        },
        "query": {
          "name": "Variant Analysis Integration Test 1",
          "filePath": "PLACEHOLDER/q2.ql",
@@ -30,7 +34,11 @@
      "completed": true,
      "variantAnalysis": {
        "id": 98574321397,
-        "controllerRepoId": 128321,
+        "controllerRepo": {
+          "id": 128321,
+          "fullName": "github/codeql",
+          "private": false
+        },
        "query": {
          "name": "Variant Analysis Integration Test 2",
          "filePath": "PLACEHOLDER/q2.ql",
--- a/extensions/ql-vscode/test/vscode-tests/no-workspace/helpers.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/no-workspace/helpers.test.ts
@@ -273,6 +273,13 @@ describe("helpers", () => {
  class MockEnvironmentVariableCollection
    implements EnvironmentVariableCollection
  {
+    [Symbol.iterator](): Iterator<
+      [variable: string, mutator: EnvironmentVariableMutator],
+      any,
+      undefined
+    > {
+      throw new Error("Method not implemented.");
+    }
    persistent = false;
    replace(_variable: string, _value: string): void {
      throw new Error("Method not implemented.");
--- a/extensions/ql-vscode/test/vscode-tests/no-workspace/query-history/variant-analysis-history.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/no-workspace/query-history/variant-analysis-history.test.ts
@@ -132,7 +132,10 @@ describe("Variant Analyses and QueryHistoryManager", () => {
    await qhm.readQueryHistory();

    // Remove the first variant analysis
-    await qhm.handleRemoveHistoryItem(qhm.treeDataProvider.allHistory[0]);
+    await qhm.handleRemoveHistoryItem(
+      qhm.treeDataProvider.allHistory[0],
+      undefined,
+    );

    // Add it back to the history
    qhm.addQuery(rawQueryHistory[0]);