add test for types of modules

javascript/ql/test/library-tests/ModuleTypes/import.js

@@ -0,0 +1,5 @@
+import * as fs from "fs";
+
+export default function (x) {
+    return fs.readFileSync(x);
+};

javascript/ql/test/library-tests/ModuleTypes/mjs.mjs

@@ -0,0 +1 @@
+console.log("I'm a .mjs file!");

javascript/ql/test/library-tests/ModuleTypes/require.js

@@ -0,0 +1,7 @@
+var fs = require("fs");
+
+module.exports = {
+    foo: function (x) {
+        return fs.readFileSync(x);
+    }
+}

javascript/ql/test/library-tests/ModuleTypes/script.js

@@ -0,0 +1 @@
+console.log("I'm a plain script!");

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

@@ -0,0 +1,4 @@
+| import.js:1:1:5:2 | <toplevel> | es2015 |
+| mjs.mjs:1:1:1:32 | <toplevel> | es2015 |
+| require.js:1:1:7:1 | <toplevel> | node |
+| script.js:1:1:1:35 | <toplevel> | non-module |

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

@@ -0,0 +1,18 @@
+import javascript
+
+query string getModuleType(TopLevel top) {
+  not top.isExterns() and
+  (
+    not top instanceof Module and
+    result = "non-module"
+    or
+    top instanceof NodeModule and
+    result = "node"
+    or
+    top instanceof ES2015Module and
+    result = "es2015"
+    or
+    top instanceof AmdModule and
+    result = "amd"
+  )
+}