Implements

.eslintignore

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+.eslintrc.js

.eslintrc.js

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+"use strict";
+
+module.exports = {
+  root: true,
+  env: {
+    browser: true,
+    node: true,
+    es6: true,
+  },
+
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    sourceType: "module",
+    project: "./tsconfig.json",
+    tsconfigRootDir: __dirname, // TODO: https://github.com/typescript-eslint/typescript-eslint/issues/251
+    useJSXTextNode: true,
+  },
+
+  plugins: ["@typescript-eslint",  "prettier" ],
+
+  extends: [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:prettier/recommended",
+    "prettier",
+  ],
+
+  rules: {
+    "prettier/prettier": [
+      "warn",
+      {
+        bracketSpacing: true,
+        printWidth: 80,
+        singleQuote: true,
+        tabWidth: 4,
+        trailingComma: "es5", // EcmaScript5 において、validな場合には末尾カンマを許可する
+        arrowParens: "always", // アロー関数の引数に対する括弧を必須にする
+        useTabs: false,
+        jsxBracketSameLine: false,
+        parser: "typescript",
+      },
+    ],
+    "@typescript-eslint/no-namespace": "off",
+    // '@typescript-eslint/indent': 'off',
+    // '@typescript-eslint/interface-name-prefix': ['warn', 'always'],
+    // '@typescript-eslint/no-empty-interface': 'off',
+    // '@typescript-eslint/no-object-literal-type-assertion': 'off',
+    // '@typescript-eslint/no-unused-vars': 'warn',
+    // '@typescript-eslint/no-explicit-any': 'off',
+    // "@typescript-eslint/no-empty-function": [2, {"allow": ["arrowFunctions", "constructors"]}],
+    // // 'no-console': ['warn', { allow: ['error', 'warn'] }],
+    // // TSLintの例外対応
+    // '@typescript-eslint/array-type': 'warn', // 配列を[]で定義(Array<>は許可しない)
+    // '@typescript-eslint/camelcase': 'off', // キャメルケースを許可しない
+    // '@typescript-eslint/explicit-function-return-type': ['off'], // 関数の戻り値の型の指定
+    // '@typescript-eslint/explicit-member-accessibility': 'warn', // TODO: https://github.com/typescript-eslint/typescript-eslint/issues/214
+    // 'import/no-extraneous-dependencies': 'off', // package.jsonのdevDependencies import問題
+    // 'import/no-unresolved': 'off', // TODO: aliasの時だけ拡張子が解決出来ずエラーになるので対策
+    // 'import/order': 'off', // importの順序
+    // 'import/prefer-default-export': 'off', // exportが1つしかない場合はdefaultにする
+    // 'no-irregular-whitespace': ['error', { skipRegExps: true }], // 正規表現のみスペースの使用を許可する
+    // 'no-nested-ternary': 'off', // 三項演算子のネストを許可しない
+  },
+
+  settings: {
+    propWrapperFunctions: [
+      // The names of any function used to wrap propTypes, e.g. `forbidExtraProps`. If this isn't set, any propTypes wrapped in a function will be skipped.
+      "forbidExtraProps",
+      { property: "freeze", object: "Object" },
+      { property: "myFavoriteWrapper" },
+    ],
+    linkComponents: [
+      // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
+      "Hyperlink",
+      { name: "Link", linkAttribute: "to" },
+    ],
+  },
+};

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/node
+# Edit at https://www.toptal.com/developers/gitignore?templates=node
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+.env*.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# End of https://www.toptal.com/developers/gitignore/api/node
+
+# JetBrains IDE
+.idea/

cafe/chapter1.test.ts

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+import { Dish, Nutrition, Plate, Price } from './index';
+
+describe('チャプター１', () => {
+    it('Price', () => {
+        const price = new Price(150);
+        expect(price.toString()).toEqual('Price(150円)');
+    });
+
+    it('Nutrition', () => {
+        const nutrition = new Nutrition(1, 2, 3);
+        expect(nutrition.toString()).toEqual('Nutrition(赤:1, 緑:2, 黄:3)');
+    });
+
+    it('Dish', () => {
+        const pasta = new Dish(
+            'パスタ&サラダ',
+            new Price(250),
+            new Nutrition(1, 1, 3)
+        );
+        expect(pasta.toString()).toEqual(
+            'Dish(パスタ&サラダ, Nutrition(赤:1, 緑:1, 黄:3), Price(250円))'
+        );
+    });
+
+    it('太郎のプレート', () => {
+        const pasta = new Dish(
+            'パスタ&ランチ',
+            new Price(250),
+            new Nutrition(1, 1, 3)
+        );
+        const bread = new Dish(
+            'くるみパン',
+            new Price(150),
+            new Nutrition(0, 0, 3)
+        );
+        const dessert = new Dish(
+            'フルーツ',
+            new Price(150),
+            new Nutrition(0, 1, 0)
+        );
+        const taroPlate = new Plate('太郎のプレート', [pasta, bread, dessert]);
+
+        expect(taroPlate).toBeInstanceOf(Plate);
+        expect(taroPlate.dishItems()).toHaveLength(3);
+        expect(taroPlate.toString()).toEqual(
+            `Plate 太郎のプレート
+DishCollection(
+  Dish(パスタ&ランチ, Nutrition(赤:1, 緑:1, 黄:3), Price(250円)),
+  Dish(くるみパン, Nutrition(赤:0, 緑:0, 黄:3), Price(150円)),
+  Dish(フルーツ, Nutrition(赤:0, 緑:1, 黄:0), Price(150円))
+)`
+        );
+        // expect(taroPlate.dishes[0]).toEqual('パスタ&サラダ');
+    });
+});

cafe/chapter2.test.ts

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+import { Discount, DiscountName, Dish, Nutrition, Plate, Price } from './index';
+
+it('Chapter2: カフェ (太郎のプレート)', () => {
+    const pasta = new Dish(
+        'パスタ&ランチ',
+        new Price(250),
+        new Nutrition(1, 1, 3)
+    );
+    const bread = new Dish(
+        'くるみパン',
+        new Price(150),
+        new Nutrition(0, 0, 3)
+    );
+    const dessert = new Dish(
+        'フルーツ',
+        new Price(150),
+        new Nutrition(0, 1, 0)
+    );
+    const taroPlate = new Plate('太郎のプレート', [pasta, bread, dessert]);
+
+    const taroDiscounts_1 = [
+        new Discount(DiscountName.LowCarbon, taroPlate),
+        new Discount(DiscountName.NiceCalorie, taroPlate),
+        new Discount(DiscountName.NutritionGoodBalance, taroPlate),
+    ];
+
+    // const taroDiscounts_2 = [
+    //     new LowCarbonDiscount(taroPlate),
+    //     new NiceCalorieDiscount(taroPlate),
+    //     new NutritionBalanceDiscount(taroPlate),
+    // ];
+
+    // 太郎のプレートに対する割引の候補の中から、有効なものだけを取り出す
+    // taroDiscounts_2.filter((discount) => discount.available());
+});
+
+it('Chapter2: カフェ (次郎のプレート)', () => {
+    const pasta = new Dish(
+        'パスタ&ランチ',
+        new Price(250),
+        new Nutrition(1, 1, 3)
+    );
+    // FIXME: パンの種類を変える
+    const bread = new Dish(
+        'くるみパン',
+        new Price(150),
+        new Nutrition(0, 0, 3)
+    );
+    const dessert = new Dish(
+        'フルーツ',
+        new Price(150),
+        new Nutrition(0, 1, 0)
+    );
+    const taroPlate = new Plate('太郎のプレート', [pasta, bread, dessert]);
+});