WIP: adding Deno version

deno/.editorconfig

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+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

deno/.gitignore

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+.DS_Store
+.idea
+node_modules
+typings
+app/**/*.js
+app/**/*.js.map
+test/**/*.js
+test/**/*.js.map
+coverage
+.nyc_output
+package-lock.json

deno/.mocharc.js

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

deno/.nycrc.js

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

deno/README.md

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+# Gilded Rose
+
+This is the Gilded Rose kata in TypeScript through [Deno](https://deno.com/) for a simplified experience.
+
+## Getting started
+
+Install dependencies
+
+No more dependencies to install. Just go to the next step.
+
+## Run the unit tests from the Command-Line
+
+Open a terminal and run the following command:
+
+```sh
+deno test
+```
+
+To run all tests in watch mode
+
+```sh
+deo test --watch
+```
+
+## Run the TextTest fixture from the Command-Line
+
+```sh
+deno run test/golden-master-text-test.ts
+```
+
+Or with number of days as args:
+```sh
+deno run test/golden-master-text-test.ts 10
+```
+
+You should make sure the command shown above works when you execute it in a terminal before trying to use TextTest (see below).
+
+
+## Run the TextTest approval test that comes with this project
+
+There are instructions in the [TextTest Readme](../texttests/README.md) for setting up TextTest. You will need to specify the Python executable and interpreter in [config.gr](../texttests/config.gr). Uncomment these lines:
+
+    executable:${TEXTTEST_HOME}/python/texttest_fixture.py
+    interpreter:python

deno/app/gilded-rose.ts

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+export class Item {
+  name: string;
+  sellIn: number;
+  quality: number;
+
+  constructor(name, sellIn, quality) {
+    this.name = name;
+    this.sellIn = sellIn;
+    this.quality = quality;
+  }
+}
+
+export class GildedRose {
+  items: Array<Item>;
+
+  constructor(items = [] as Array<Item>) {
+    this.items = items;
+  }
+
+  updateQuality() {
+    for (let i = 0; i < this.items.length; i++) {
+      if (this.items[i].name != 'Aged Brie' && this.items[i].name != 'Backstage passes to a TAFKAL80ETC concert') {
+        if (this.items[i].quality > 0) {
+          if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
+            this.items[i].quality = this.items[i].quality - 1
+          }
+        }
+      } else {
+        if (this.items[i].quality < 50) {
+          this.items[i].quality = this.items[i].quality + 1
+          if (this.items[i].name == 'Backstage passes to a TAFKAL80ETC concert') {
+            if (this.items[i].sellIn < 11) {
+              if (this.items[i].quality < 50) {
+                this.items[i].quality = this.items[i].quality + 1
+              }
+            }
+            if (this.items[i].sellIn < 6) {
+              if (this.items[i].quality < 50) {
+                this.items[i].quality = this.items[i].quality + 1
+              }
+            }
+          }
+        }
+      }
+      if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
+        this.items[i].sellIn = this.items[i].sellIn - 1;
+      }
+      if (this.items[i].sellIn < 0) {
+        if (this.items[i].name != 'Aged Brie') {
+          if (this.items[i].name != 'Backstage passes to a TAFKAL80ETC concert') {
+            if (this.items[i].quality > 0) {
+              if (this.items[i].name != 'Sulfuras, Hand of Ragnaros') {
+                this.items[i].quality = this.items[i].quality - 1
+              }
+            }
+          } else {
+            this.items[i].quality = this.items[i].quality - this.items[i].quality
+          }
+        } else {
+          if (this.items[i].quality < 50) {
+            this.items[i].quality = this.items[i].quality + 1
+          }
+        }
+      }
+    }
+
+    return this.items;
+  }
+}

deno/deno.json

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+{
+  "tasks": {
+    "dev": "deno run --watch main.ts"
+  },
+  "imports": {
+    "@std/assert": "jsr:@std/assert@1"
+  }
+}

deno/deno.lock

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+{
+  "version": "4",
+  "specifiers": {
+    "jsr:@std/assert@1": "1.0.10",
+    "jsr:@std/internal@^1.0.5": "1.0.5"
+  },
+  "jsr": {
+    "@std/assert@1.0.10": {
+      "integrity": "59b5cbac5bd55459a19045d95cc7c2ff787b4f8527c0dd195078ff6f9481fbb3",
+      "dependencies": [
+        "jsr:@std/internal"
+      ]
+    },
+    "@std/internal@1.0.5": {
+      "integrity": "54a546004f769c1ac9e025abd15a76b6671ddc9687e2313b67376125650dc7ba"
+    }
+  },
+  "workspace": {
+    "dependencies": [
+      "jsr:@std/assert@1"
+    ],
+    "packageJson": {
+      "dependencies": [
+        "npm:@types/chai@^4.2.22",
+        "npm:@types/jest@^29.4.0",
+        "npm:@types/mocha@^10.0.1",
+        "npm:@types/node@^18.14.0",
+        "npm:@vitest/coverage-istanbul@~0.28.5",
+        "npm:chai@^4.3.4",
+        "npm:jest@^29.4.3",
+        "npm:mocha@^10.2.0",
+        "npm:nyc@15.1",
+        "npm:rimraf@^4.1.2",
+        "npm:source-map-support@~0.5.20",
+        "npm:ts-jest@^29.0.5",
+        "npm:ts-node@^10.9.1",
+        "npm:tsconfig-paths@^4.1.2",
+        "npm:typescript@^4.4.4",
+        "npm:vite-tsconfig-paths@^4.0.5",
+        "npm:vitest@~0.28.5"
+      ]
+    }
+  }
+}

deno/main.ts

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+export function add(a: number, b: number): number {
+  return a + b;
+}
+
+// Learn more at https://docs.deno.com/runtime/manual/examples/module_metadata#concepts
+if (import.meta.main) {
+  console.log("Add 2 + 3 =", add(2, 3));
+}

deno/main_test.ts

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+import { assertEquals } from "@std/assert";
+import { add } from "./main.ts";
+
+Deno.test(function addTest() {
+  assertEquals(add(2, 3), 5);
+});

deno/package.json

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+{
+  "name": "gilded-rose-kata",
+  "version": "1.0.0",
+  "description": "Gilded Rose kata in TypeScript",
+  "scripts": {
+    "precompile": "rimraf app/**/*.js test/**/*.js",
+    "compile": "tsc",
+    "pretest": "rimraf app/**/*.js test/**/*.js",
+    "test:jest": "jest",
+    "test:jest:watch": "jest --watchAll",
+    "test:mocha": "nyc mocha",
+    "test:vitest": "vitest --coverage"
+  },
+  "license": "MIT",
+  "private": true,
+  "devDependencies": {
+    "@types/chai": "^4.2.22",
+    "@types/jest": "^29.4.0",
+    "@types/mocha": "^10.0.1",
+    "@types/node": "^18.14.0",
+    "@vitest/coverage-istanbul": "^0.28.5",
+    "chai": "^4.3.4",
+    "jest": "^29.4.3",
+    "mocha": "^10.2.0",
+    "nyc": "~15.1.0",
+    "rimraf": "^4.1.2",
+    "source-map-support": "^0.5.20",
+    "ts-jest": "^29.0.5",
+    "ts-node": "^10.9.1",
+    "tsconfig-paths": "^4.1.2",
+    "typescript": "^4.4.4",
+    "vite-tsconfig-paths": "^4.0.5",
+    "vitest": "^0.28.5"
+  }
+}

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

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+import { GildedRose, Item } from "../app/gilded-rose.ts";
+
+console.log("OMGHAI!");
+
+const items = [
+  new Item("+5 Dexterity Vest", 10, 20), //
+  new Item("Aged Brie", 2, 0), //
+  new Item("Elixir of the Mongoose", 5, 7), //
+  new Item("Sulfuras, Hand of Ragnaros", 0, 80), //
+  new Item("Sulfuras, Hand of Ragnaros", -1, 80),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 10, 49),
+  new Item("Backstage passes to a TAFKAL80ETC concert", 5, 49),
+  // this conjured item does not work properly yet
+  new Item("Conjured Mana Cake", 3, 6),
+];
+
+const gildedRose = new GildedRose(items);
+
+let days: number = 2;
+if (process.argv.length > 2) {
+  days = +process.argv[2];
+}
+
+for (let i = 0; i < days + 1; i++) {
+  console.log("-------- day " + i + " --------");
+  console.log("name, sellIn, quality");
+  items.forEach((element) => {
+    console.log(element.name + ", " + element.sellIn + ", " + element.quality);
+  });
+  console.log();
+  gildedRose.updateQuality();
+}

deno/test/jest/approvals.spec.ts

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+import { Item, GildedRose } from '@/gilded-rose';
+
+/**
+ * This unit test uses [Jest Snapshot](https://goo.gl/fbAQLP).
+ * 
+ * There are two test cases here with different styles:
+ * <li>"foo" is more similar to the unit test from the 'Java' version
+ * <li>"thirtyDays" is more similar to the TextTest from the 'Java' version
+ *
+ * I suggest choosing one style to develop and deleting the other.
+ */
+
+describe('Gilded Rose Approval', () => {
+
+  let gameConsoleOutput: string;
+  let originalConsoleLog: (message: any) => void;
+  let originalProcessArgv: string[]
+
+  function gameConsoleLog(msg: string) {
+    if (msg) {
+      gameConsoleOutput += msg;
+    }
+    gameConsoleOutput += "\n";
+  }
+
+  beforeEach(() => {
+    // prepare capturing console.log to our own gameConsoleLog.
+    gameConsoleOutput = "";
+    originalConsoleLog = console.log;
+    console.log = gameConsoleLog;
+    originalProcessArgv = process.argv;
+  });
+
+  afterEach(() => {
+    // reset original console.log
+    console.log = originalConsoleLog;
+    process.argv = originalProcessArgv;
+  });
+
+  it('should foo', () => {
+    const gildedRose = new GildedRose([new Item('foo', 0, 0)]);
+    const items = gildedRose.updateQuality();
+  
+    expect(items).toMatchSnapshot();
+  });
+
+  it('should thirtyDays', () => {
+    process.argv = ["<node>", "<script", "30"];
+    require('../golden-master-text-test.ts');
+       
+    expect(gameConsoleOutput).toMatchSnapshot();
+  });
+
+});

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

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+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');
+  });
+});

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

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+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');
+  });
+});

deno/test/vitest/gilded-rose.spec.ts

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+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');
+  });
+});

deno/texttest_rig.py

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+#!/usr/bin/env python
+"""
+This script uses npx to execute the TextTest Fixture for TypeScript.
+It is designed to be used by TextTest and specified in the file 'texttests/config.gr' in this repo.
+It is more convenient for TextTest to use since npx needs
+several arguments in addition to the one the TextTest fixture needs.
+"""
+import os
+import subprocess
+import sys
+
+args = " ".join(sys.argv[1:])
+TEXTTEST_HOME = os.environ.get("TEXTTEST_HOME", os.getcwd())
+subprocess.run(f"deno run {TEXTTEST_HOME}/TypeScript/test/golden-master-text-test.ts {args}", shell=True)

deno/tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es5",
+    "strict": true,
+    "noImplicitAny": false,
+    "sourceMap": true,
+    "baseUrl": "./",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "paths": {
+      "@/*": [
+        "app/*"
+      ]
+    }
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}