Add Jest to TypeScript (and update dependencies)

TypeScript/.editorconfig

@@ -0,0 +1,12 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

TypeScript/.mocharc.js

@@ -3,8 +3,9 @@
 module.exports = {
   require: [
     "ts-node/register",
+    "tsconfig-paths/register",
     "source-map-support/register"
   ],
   recursive: true,
-  spec: "test/*.spec.ts"
+  spec: "test/mocha/*.spec.ts"
 }

TypeScript/.nycrc.js

@@ -0,0 +1,17 @@
+module.exports = {
+  extension: [
+    ".ts"
+  ],
+  exclude: [
+    "**/*.d.ts",
+    "test/**",
+    "/*.js"
+  ],
+  require: [
+    "ts-node/register"
+  ],
+  reporter: [
+    "html",
+    "text"
+  ]
+}

TypeScript/README.md

@@ -0,0 +1,33 @@
+# Gilded Rose
+
+This is the Gilded Rose kata in TypeScript.
+
+## Getting started
+
+Install dependencies
+
+```sh
+npm install
+```
+
+## Running tests
+
+To run all tests
+
+### Jest way
+
+```sh
+npm run test:jest
+```
+
+To run all tests in watch mode
+
+```sh
+npm run test:jest:watch
+```
+
+### Mocha way
+
+```sh
+npm run test:mocha
+```

TypeScript/jest.config.ts

@@ -0,0 +1,13 @@
+import { pathsToModuleNameMapper } from  "ts-jest/utils";
+const { compilerOptions } = require("./tsconfig");
+
+export default {
+  roots: ['<rootDir>/app', '<rootDir>/test/jest'],
+  collectCoverage: true,
+  coverageDirectory: 'coverage',
+  coverageProvider: 'v8',
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/' } ),
+};

TypeScript/package.json

@@ -6,36 +6,26 @@
     "precompile": "rimraf app/**/*.js test/**/*.js",
     "compile": "tsc",
     "pretest": "rimraf app/**/*.js test/**/*.js",
-    "test": "nyc mocha"
+    "test:jest": "jest",
+    "test:jest:watch": "jest --watchAll",
+    "test:mocha": "nyc mocha"
   },
   "license": "MIT",
   "private": true,
   "devDependencies": {
-    "@types/chai": "~3.5.2",
-    "@types/mocha": "~2.2.41",
-    "@types/node": "~7.0.18",
-    "chai": "~4.2.0",
-    "mocha": "~8.2.1",
+    "@types/chai": "^4.2.22",
+    "@types/jest": "^27.0.2",
+    "@types/mocha": "^9.0.0",
+    "@types/node": "^16.11.7",
+    "chai": "^4.3.4",
+    "jest": "^27.3.1",
+    "mocha": "^9.1.3",
     "nyc": "~15.1.0",
     "rimraf": "~3.0.2",
-    "source-map-support": "0.5.19",
-    "ts-node": "~9.1.1",
-    "typescript": "~4.1.3"
-  },
-  "nyc": {
-    "extension": [
-      ".ts"
-    ],
-    "exclude": [
-      "**/*.d.ts",
-      "test/**"
-    ],
-    "require": [
-      "ts-node/register"
-    ],
-    "reporter": [
-      "html",
-      "text"
-    ]
+    "source-map-support": "^0.5.20",
+    "ts-jest": "^27.0.7",
+    "ts-node": "^10.4.0",
+    "tsconfig-paths": "^3.11.0",
+    "typescript": "^4.4.4"
   }
 }

TypeScript/test/gilded-rose.spec.ts

@@ -1,12 +0,0 @@
-import { expect } from 'chai';
-import { Item, GildedRose } from '../app/gilded-rose';
-
-describe('Gilded Rose', function () {
-
-    it('should foo', function() {
-        const gildedRose = new GildedRose([ new Item('foo', 0, 0) ]);
-        const items = gildedRose.updateQuality();
-        expect(items[0].name).to.equal('fixme');
-    });
-
-});

TypeScript/test/golden-master-text-test.ts

@@ -1,4 +1,4 @@
-import { Item, GildedRose } from '../app/gilded-rose';
+import { Item, GildedRose } from '@/gilded-rose';
 
 const items = [
   new Item("+5 Dexterity Vest", 10, 20), //

TypeScript/test/jest/gilded-rose.spec.ts

@@ -0,0 +1,9 @@
+import { Item, GildedRose } from '@/gilded-rose';
+
+describe('Gilded Rose', () => {
+  it('should foo', () => {
+    const gildedRose = new GildedRose([new Item('foo', 0, 0)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).toBe('fixme');
+  });
+});

TypeScript/test/mocha/gilded-rose.spec.ts

@@ -0,0 +1,10 @@
+import { expect } from 'chai';
+import { Item, GildedRose } from '@/gilded-rose';
+
+describe('Gilded Rose', () => {
+  it('should foo', () => {
+    const gildedRose = new GildedRose([new Item('foo', 0, 0)]);
+    const items = gildedRose.updateQuality();
+    expect(items[0].name).to.equal('fixme');
+  });
+});

TypeScript/tsconfig.json

@@ -4,7 +4,13 @@
     "target": "es5",
     "strict": true,
     "noImplicitAny": false,
-        "sourceMap": false
+    "sourceMap": false,
+    "baseUrl": "./",
+    "paths": {
+      "@/*": [
+        "app/*"
+      ]
+    }
   },
   "exclude": [
     "node_modules"