QL code and tests for C#/C++/JavaScript.

javascript/ql/src/NodeJS/examples/CyclicImport.js

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+// a.js
+var b = require('./b');
+
+var title = "Ms";
+
+function example() {
+	return title + " " + b.fullName;
+}
+
+exports.firstName = "Ada";
+
+// b.js
+var a = require('./a');
+
+var lastName = "Lovelace";
+
+exports.fullName = a.firstName + " " + lastName;

javascript/ql/src/NodeJS/examples/CyclicImportGood.js

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+// a.js
+var b = require('./b');
+
+var title = "Ms";
+
+function example() {
+  return title + " " + b.fullName;
+}
+
+// b.js
+var firstName = "Ada",
+    lastName = "Lovelace";
+
+exports.fullName = firstName + " " + lastName;

javascript/ql/src/NodeJS/examples/DubiousImport.js

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+// point.js
+function Point(x, y) {
+	this.x = x;
+	this.y = y;
+}
+
+Point.prototype.distance = function() {
+	return Math.sqrt(this.x*this.x+this.y*this.y);
+};
+
+module.exports = Point;
+
+// client.js
+var Point = require('./point').Point;
+
+var pyth = new Point(3, 4);
+console.log(pyth.distance());

javascript/ql/src/NodeJS/examples/DubiousImportGood.js

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+// point.js
+function Point(x, y) {
+	this.x = x;
+	this.y = y;
+}
+
+Point.prototype.distance = function() {
+	return Math.sqrt(this.x*this.x+this.y*this.y);
+};
+
+module.exports = Point;
+
+// client.js
+var Point = require('./point');
+
+var pyth = new Point(3, 4);
+console.log(pyth.distance());

javascript/ql/src/NodeJS/examples/InvalidExport.js

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+// point.js
+function Point(x, y) {
+	this.x = x;
+	this.y = y;
+}
+
+Point.prototype.distance = function() {
+	return Math.sqrt(this.x*this.x+this.y*this.y);
+};
+
+exports = Point;
+
+// client.js
+var Point = require('./point');
+
+var pyth = new Point(3, 4);
+console.log(pyth.distance());

javascript/ql/src/NodeJS/examples/InvalidExportGood.js

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+// point.js
+function Point(x, y) {
+	this.x = x;
+	this.y = y;
+}
+
+Point.prototype.distance = function() {
+	return Math.sqrt(this.x*this.x+this.y*this.y);
+};
+
+module.exports = Point;
+
+// client.js
+var Point = require('./point');
+
+var pyth = new Point(3, 4);
+console.log(pyth.distance());

javascript/ql/src/NodeJS/examples/MissingExports.js

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+exports.checkOne = function(x) {
+  if (!x) throw new Error();
+};
+
+var checkList = exports.checkList = function(xs) {
+  for (var i=0; i<xs.length; ++i)
+    checkOne(xs[i]);
+};

javascript/ql/src/NodeJS/examples/MissingExportsGood.js

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+exports.checkOne = function(x) {
+  if (!x) throw new Error();
+};
+
+var checkList = exports.checkList = function(xs) {
+  for (var i=0; i<xs.length; ++i)
+    exports.checkOne(xs[i]);
+};

javascript/ql/src/NodeJS/examples/UnresolvableImport.js

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+// package.json
+{
+  "name": "example-package",
+  "version": "0.1.0"
+}
+
+// index.js
+var acorn = require('acorn'),
+    fs = require('fs');
+acorn.parse(fs.readFileSync('tst.js'), 'utf-8');

javascript/ql/src/NodeJS/examples/UnresolvableImportGood.js

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+// package.json
+{
+  "name": "example-package",
+  "version": "0.1.0",
+  "dependencies": {
+    "acorn": "*"
+  }
+}
+
+// index.js
+var acorn = require('acorn'),
+    fs = require('fs');
+acorn.parse(fs.readFileSync('tst.js'), 'utf-8');

javascript/ql/src/NodeJS/examples/UnusedDependency.js

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+// package.json
+{
+  "name": "example-package",
+  "version": "0.1.0",
+  "dependencies": {
+    "acorn": "*",
+    "esprima": "~2.0.0"
+  }
+}
+
+// index.js
+var acorn = require('acorn'),
+    fs = require('fs');
+acorn.parse(fs.readFileSync('tst.js'), 'utf-8');