JS: Add test

javascript/ql/test/library-tests/UnderlyingTypes/calls.ts

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+import * as express from 'express';
+
+function getRequest(): express.Request { }
+
+function t1() {
+    getRequest(); // $ hasUnderlyingType='express'.Request
+}
+
+declare function getRequestAmbient(): express.Request;
+
+function t2() {
+    getRequestAmbient(); // $ hasUnderlyingType='express'.Request
+}
+
+class C {
+    method(): express.Request { }
+}
+
+function t3(c: C) {
+    c.method(); // $ hasUnderlyingType='express'.Request
+    new C().method(); // $ hasUnderlyingType='express'.Request
+}
+
+function callback(fn: (req: express.Request) => void) { // $ SPURIOUS: hasUnderlyingType='express'.Request // req seems to be a SourceNode
+}
+
+function t4() {
+    callback(function (
+        req // $ hasUnderlyingType='express'.Request
+    ) { }
+    );
+}

javascript/ql/test/library-tests/UnderlyingTypes/closure.es.js

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+goog.declareModuleId("closure.es")
+
+const Bar = goog.require('closure.reexported.Bar');
+
+export { Bar }

javascript/ql/test/library-tests/UnderlyingTypes/closure.lib.js

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+goog.module("closure.lib")
+
+exports.Foo = goog.require('closure.reexported.Foo');

javascript/ql/test/library-tests/UnderlyingTypes/closure.use.js

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+goog.module("closure.use")
+
+const lib = goog.require("closure.lib");
+const es = goog.require("closure.es");
+
+/**
+ * @param {lib.Foo} x
+ */
+function t1(x) { // $ hasUnderlyingType=closure.reexported.Foo hasUnderlyingType=closure.lib.Foo
+}
+
+/**
+ * @param {es.Bar} x
+ */
+function t2(x) { // $ hasUnderlyingType=closure.reexported.Bar hasUnderlyingType=closure.es.Bar
+}

javascript/ql/test/library-tests/UnderlyingTypes/contextualTypes.ts

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+import * as express from 'express';
+
+interface Options {
+    handle(req: express.Request): void; // $ hasUnderlyingType='express'.Request
+}
+
+declare function doSomething(options: Options);
+
+function t1() {
+    doSomething({
+        handle(req) { // $ hasUnderlyingType='express'.Request
+        }
+    });
+}
+
+function t2(callback: ((opts: Options) => void) | undefined) {
+    callback({
+        handle(req) { } // $ hasUnderlyingType='express'.Request
+    })
+    callback!({
+        handle(req) { } // $ hasUnderlyingType='express'.Request
+    })
+}
+
+function t3(): Options {
+    return {
+        handle(req) { } // $ hasUnderlyingType='express'.Request
+    }
+}
+
+function t4(): Options[] {
+    return [
+        {
+            handle(req) { } // $ hasUnderlyingType='express'.Request
+        }
+    ]
+}
+
+async function t5(): Promise<Options> {
+    return {
+        handle(req) { // $ hasUnderlyingType='express'.Request
+
+        }
+    }
+}

javascript/ql/test/library-tests/UnderlyingTypes/expressBulkExport.ts

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+export * from 'express';

javascript/ql/test/library-tests/UnderlyingTypes/expressBulkExport.use.ts

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+import { Request, Response } from './expressBulkExport';
+
+function t1(req: Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t2(res: Response) { // $ hasUnderlyingType='express'.Response
+}

javascript/ql/test/library-tests/UnderlyingTypes/expressExportAssign.ts

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+import E = require('express');
+export = E;

javascript/ql/test/library-tests/UnderlyingTypes/expressExportAssign.use.ts

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+import { Request } from "./expressExportAssign";
+
+function t1(req: Request) { // $ hasUnderlyingType='express'.Request
+}

javascript/ql/test/library-tests/UnderlyingTypes/expressExportAssignWrapper.ts

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+import Express = require('express');
+namespace Wrapper {
+    export import E = Express;
+}
+export = Wrapper;

javascript/ql/test/library-tests/UnderlyingTypes/expressExportAssignWrapper.use.ts

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+import { E } from "./expressExportAssignWrapper";
+
+function t1(req: E.Request) { // $ hasUnderlyingType='express'.Request
+}

javascript/ql/test/library-tests/UnderlyingTypes/expressSelectiveExport.ts

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+export { Request } from 'express';
+export { Response as R } from 'express';

javascript/ql/test/library-tests/UnderlyingTypes/expressSelectiveExport.use.ts

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+import { Request, Response, R } from './expressSelectiveExport';
+
+function t1(req: Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t2(res: Response) { // none, not exported
+}
+
+function t3(res: R) { // $ hasUnderlyingType='express'.Response
+}

javascript/ql/test/library-tests/UnderlyingTypes/expressWrapperExport.ts

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+export * as wrapper from 'express';

javascript/ql/test/library-tests/UnderlyingTypes/expressWrapperExport.use.ts

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+import { Request, Response, wrapper } from './expressWrapperExport';
+import * as w from './expressWrapperExport';
+
+function t1(req: Request) { // none
+}
+
+function t2(res: Response) { // none
+}
+
+function t3(req: wrapper.Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t4(res: wrapper.Response) { // $ hasUnderlyingType='express'.Response
+}
+
+function t5(req: w.wrapper.Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t6(res: w.wrapper.Response) { // $ hasUnderlyingType='express'.Response
+}
+
+function t7(req: w.Request) { // none
+}
+
+function t8(res: w.Response) { // none
+}
+
+function t9(e: typeof w.wrapper) { // $ hasUnderlyingType='express'
+}

javascript/ql/test/library-tests/UnderlyingTypes/globals.ts

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+function t1(el: HTMLElement) { } // $ hasUnderlyingType=HTMLElement
+
+/**
+ * @param {HTMLInputElement} el
+ */
+function t2(el) { // $ hasUnderlyingType=HTMLInputElement
+}
+
+function t3(req: Express.Request) { // $ hasUnderlyingType=Express.Request
+}

javascript/ql/test/library-tests/UnderlyingTypes/jsdoc.js

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+import * as e from 'express';
+import { Response } from 'express';
+
+/**
+ * @param {e.Request} req
+ */
+function t1(req) { // $ hasUnderlyingType='express'.Request
+}
+
+/**
+ * @param {Response} res
+ */
+function t2(res) { // $ hasUnderlyingType='express'.Response
+}

javascript/ql/test/library-tests/UnderlyingTypes/namedImport.ts

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+import { Request } from 'express';
+
+function t1(req: Request) { // $ hasUnderlyingType='express'.Request
+}

javascript/ql/test/library-tests/UnderlyingTypes/namespaceDecls.ts

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+import Express = require('express');
+
+namespace A {
+    export import E = Express;
+}
+namespace B {
+    export import Q = A
+}
+namespace C {
+    import E = Express;
+    export const A = E;
+}
+
+function t1(x: A.E.Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t2(x: B.Q.E.Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t3(x: typeof Express) { // $ hasUnderlyingType='express'
+}
+
+function t4(x: typeof A.E) { // $ hasUnderlyingType='express'
+}
+
+function t5(x: typeof C.A) { // $ hasUnderlyingType='express'
+}

javascript/ql/test/library-tests/UnderlyingTypes/namespaceImport.ts

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+import * as express from 'express';
+
+function t1(e: typeof express) { // $ hasUnderlyingType='express'
+}
+
+function t2(req: express.Request) { // $ hasUnderlyingType='express'.Request
+}
+
+function t3(req: Request) { // $ hasUnderlyingType=Request // not in scope, refers to a global
+}
+
+type E = typeof express;
+
+function t4(e: E) { // $ hasUnderlyingType='express'
+}

javascript/ql/test/library-tests/UnderlyingTypes/props.ts

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+import * as express from 'express';
+
+interface Foo {
+    req: express.Request;
+    e: typeof express;
+}
+
+function t1(f: Foo) {
+    f.req; // $ hasUnderlyingType='express'.Request
+    f.e; // $ hasUnderlyingType='express'
+
+    const {
+        req, // $ hasUnderlyingType='express'.Request
+        e // $ hasUnderlyingType='express'
+    } = f;
+}

javascript/ql/test/library-tests/UnderlyingTypes/subtype.ts

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+import * as express from 'express';
+
+interface MyRequest extends express.Request {
+
+}
+
+function t1(req: MyRequest) { // $ hasUnderlyingType='express'.Request
+}
+
+class MyRequestClass extends express.Request {
+}
+
+function t2(req: MyRequestClass) { // $ hasUnderlyingType='express'.Request
+}
+
+class MyRequestClass2 implements express.Request {
+}
+
+function t3(req: MyRequestClass2) { // $ hasUnderlyingType='express'.Request
+}

javascript/ql/test/library-tests/UnderlyingTypes/test.expected

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+| calls.ts:6:5:6:16 | getRequest() | 'express'.Request |
+| calls.ts:12:5:12:23 | getRequestAmbient() | 'express'.Request |
+| calls.ts:20:5:20:14 | c.method() | 'express'.Request |
+| calls.ts:21:5:21:20 | new C().method() | 'express'.Request |
+| calls.ts:24:24:24:26 | req | 'express'.Request |
+| calls.ts:29:9:29:11 | req | 'express'.Request |
+| closure.use.js:9:13:9:13 | x | closure.lib.Foo |
+| closure.use.js:9:13:9:13 | x | closure.reexported.Foo |
+| closure.use.js:15:13:15:13 | x | closure.es.Bar |
+| closure.use.js:15:13:15:13 | x | closure.reexported.Bar |
+| contextualTypes.ts:4:12:4:14 | req | 'express'.Request |
+| contextualTypes.ts:11:16:11:18 | req | 'express'.Request |
+| contextualTypes.ts:18:16:18:18 | req | 'express'.Request |
+| contextualTypes.ts:21:16:21:18 | req | 'express'.Request |
+| contextualTypes.ts:27:16:27:18 | req | 'express'.Request |
+| contextualTypes.ts:34:20:34:22 | req | 'express'.Request |
+| contextualTypes.ts:41:16:41:18 | req | 'express'.Request |
+| expressBulkExport.use.ts:3:13:3:15 | req | 'express'.Request |
+| expressBulkExport.use.ts:6:13:6:15 | res | 'express'.Response |
+| expressExportAssign.use.ts:3:13:3:15 | req | 'express'.Request |
+| expressExportAssignWrapper.use.ts:3:13:3:15 | req | 'express'.Request |
+| expressSelectiveExport.use.ts:3:13:3:15 | req | 'express'.Request |
+| expressSelectiveExport.use.ts:9:13:9:15 | res | 'express'.Response |
+| expressWrapperExport.use.ts:10:13:10:15 | req | 'express'.Request |
+| expressWrapperExport.use.ts:13:13:13:15 | res | 'express'.Response |
+| expressWrapperExport.use.ts:16:13:16:15 | req | 'express'.Request |
+| expressWrapperExport.use.ts:19:13:19:15 | res | 'express'.Response |
+| expressWrapperExport.use.ts:28:13:28:13 | e | 'express' |
+| globals.ts:1:13:1:14 | el | HTMLElement |
+| globals.ts:6:13:6:14 | el | HTMLInputElement |
+| globals.ts:9:13:9:15 | req | Express.Request |
+| jsdoc.js:7:13:7:15 | req | 'express'.Request |
+| jsdoc.js:13:13:13:15 | res | 'express'.Response |
+| namedImport.ts:3:13:3:15 | req | 'express'.Request |
+| namespaceDecls.ts:14:13:14:13 | x | 'express'.Request |
+| namespaceDecls.ts:17:13:17:13 | x | 'express'.Request |
+| namespaceDecls.ts:20:13:20:13 | x | 'express' |
+| namespaceDecls.ts:23:13:23:13 | x | 'express' |
+| namespaceDecls.ts:26:13:26:13 | x | 'express' |
+| namespaceImport.ts:3:13:3:13 | e | 'express' |
+| namespaceImport.ts:6:13:6:15 | req | 'express'.Request |
+| namespaceImport.ts:9:13:9:15 | req | Request |
+| namespaceImport.ts:14:13:14:13 | e | 'express' |
+| props.ts:9:5:9:9 | f.req | 'express'.Request |
+| props.ts:10:5:10:7 | f.e | 'express' |
+| props.ts:13:9:13:11 | req | 'express'.Request |
+| props.ts:14:9:14:9 | e | 'express' |
+| subtype.ts:7:13:7:15 | req | 'express'.Request |
+| subtype.ts:13:13:13:15 | req | 'express'.Request |
+| subtype.ts:19:13:19:15 | req | 'express'.Request |

javascript/ql/test/library-tests/UnderlyingTypes/test.ql

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+import javascript
+
+bindingset[x, y]
+private string join(string x, string y) {
+  if x = "" or y = "" then result = x + y else result = x + "." + y
+}
+
+query predicate hasUnderlyingType(DataFlow::SourceNode node, string value) {
+  node.hasUnderlyingType(value)
+  or
+  exists(string mod, string name |
+    node.hasUnderlyingType(mod, name) and
+    value = join("'" + mod + "'", name)
+  )
+}

javascript/ql/test/library-tests/UnderlyingTypes/test.qlref

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+query: test.ql
+postprocess: utils/test/InlineExpectationsTestQuery.ql

javascript/ql/test/library-tests/UnderlyingTypes/tsconfig.json

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+{
+    "include": ["."]
+}