Merge branch '115-diamond-kata-ts' into 'master'

Resolve "Diamond kata TS"

Closes #115

See merge request !87

.gitlab-ci.yml

@@ -38,3 +38,4 @@ include:
   - local: "/java-puzzles/.gitlab-ci.yml"
   - local: "/java-monades/.gitlab-ci.yml"
   - local: "/java-diamond/.gitlab-ci.yml"
+  - local: "/diamond-ts/.gitlab-ci.yml"

diamond-ts/.eslintrc.js

+module.exports = {
+  root: true,
+  env: {
+    node: true,
+  },
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:import/errors',
+    'plugin:import/warnings',
+    'plugin:import/typescript',
+  ],
+  plugins: ['prettier', '@typescript-eslint'],
+  rules: {
+    quotes: ['error', 'single', { avoidEscape: true }],
+    'comma-dangle': [
+      'error',
+      {
+        arrays: 'always-multiline',
+        objects: 'always-multiline',
+        imports: 'always-multiline',
+        exports: 'always-multiline',
+        functions: 'never',
+      },
+    ],
+    'import/order': [
+      'error',
+      {
+        alphabetize: {
+          order: 'asc',
+          caseInsensitive: true,
+        },
+        'newlines-between': 'always',
+      },
+    ],
+    'prettier/prettier': [
+      'error',
+      {
+        singleQuote: true,
+        trailingComma: 'es5',
+        printWidth: 140,
+      },
+    ],
+  },
+  settings: {
+    'import/resolver': {
+      typescript: {
+        alwaysTryTypes: true,
+      },
+    },
+    'import/core-modules': ['sinon'],
+  },
+  parserOptions: {
+    parser: '@typescript-eslint/parser',
+  },
+  overrides: [
+    {
+      files: ['**/__tests__/*.{j,t}s?(x)', '**/*.spec.{j,t}s?(x)'],
+      env: {
+        jest: true,
+      },
+    },
+    {
+      files: ['**/*.ts', '**/*.tsx'],
+      rules: {
+        'no-unused-vars': ['off'],
+        'no-undef': ['off'],
+      },
+    },
+  ],
+};

diamond-ts/.gitignore

+/.idea
+

diamond-ts/.gitlab-ci.yml

+diamond-ts:
+  variables:
+    PROJECT_FOLDER: "diamond-ts"
+  extends: .node14
+  only:
+    refs:
+      - master
+      - merge_requests
+    changes:
+      - ".gitlab-common-ci.yml"
+      - ".gitlab-common-node-ci.yml"
+      - "diamond-ts/**/*"

diamond-ts/README.md

+# Diamond
+
+Résolution en TDD (enfin on a au moins essayé ...) et en TypeScript du kata [Diamond](https://codingdojo.org/kata/Diamond/).
+
+-   **Auteurs** : Simon Gayet et Arnaud Freismuth
+-   **Date** : 17/05/2021
+-   **Langage** : TypeScript
+-   **Niveau** : Moyen
+-   **Replay** : [Twitch](https://www.twitch.tv/videos/1028951757)

diamond-ts/jest.config.js

+module.exports = {
+  roots: ['<rootDir>/src'],
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$',
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  testEnvironment: 'node',
+};

diamond-ts/package.json

+{
+  "name": "diamond",
+  "version": "1.0.0",
+  "description": "Diamond kata",
+  "main": "src/index.ts",
+  "dependencies": {
+    "@types/jest": "^26.0.22",
+    "@typescript-eslint/eslint-plugin": "^4.21.0",
+    "@typescript-eslint/parser": "^4.21.0",
+    "eslint": "^7.23.0",
+    "eslint-import-resolver-typescript": "^2.4.0",
+    "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-prettier": "^3.3.1",
+    "jest": "^26.6.3",
+    "prettier": "^2.2.1",
+    "ts-jest": "^26.5.4",
+    "typescript": "^4.2.4"
+  },
+  "scripts": {
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:watch:all": "jest --watchAll",
+    "eslint:ci": "eslint './**/*.{ts,js}'",
+    "eslint": "eslint './**/*.{ts,js}' --fix"
+  },
+  "author": "Arnaud Freismuth",
+  "license": "MIT"
+}

diamond-ts/src/Diamond.spec.ts

+const letters = [
+  'A',
+  'B',
+  'C',
+  'D',
+  'E',
+  'F',
+  'G',
+  'H',
+  'I',
+  'J',
+  'K',
+  'L',
+  'M',
+  'N',
+  'O',
+  'P',
+  'Q',
+  'R',
+  'S',
+  'T',
+  'U',
+  'V',
+  'W',
+  'X',
+  'Y',
+  'Z',
+];
+
+const getDiamond = (letter: string) => {
+  if (letter === 'A') {
+    return getPyramid(letter);
+  }
+  const topPyramid = getPyramid(letter);
+  const bottomPyramid = topPyramid.slice(0, -1).reverse();
+  return [...topPyramid, ...bottomPyramid];
+};
+
+const getSpace = (numberOfSpace: number) => ' '.repeat(numberOfSpace);
+
+const getLine = (index: number, letterIndex: number) => {
+  const currentLetter = letters[index];
+  const aroundSpace = letterIndex - index;
+  if (currentLetter === 'A') {
+    return getSpace(aroundSpace) + currentLetter + getSpace(aroundSpace);
+  }
+  const insideSpace = index * 2 - 1;
+  return getSpace(aroundSpace) + currentLetter + getSpace(insideSpace) + currentLetter + getSpace(aroundSpace);
+};
+
+const getPyramid = (givenLetter: string) => {
+  const letterIndex = letters.indexOf(givenLetter);
+  const pyramid = [];
+  for (let index = 0; index <= letterIndex; index++) {
+    const line = getLine(index, letterIndex);
+    pyramid.push(line);
+  }
+  return pyramid;
+};
+
+describe('Diamond', () => {
+  it('Should be A for A', () => {
+    expect(getDiamond('A')).toStrictEqual(['A']);
+  });
+
+  it('Should get B diamond', () => {
+    expect(getDiamond('B')).toStrictEqual([' A ', 'B B', ' A ']);
+  });
+
+  it('Should get C diamond', () => {
+    expect(getDiamond('C')).toStrictEqual(['  A  ', ' B B ', 'C   C', ' B B ', '  A  ']);
+  });
+
+  it('Should get A pyramid', () => {
+    expect(getPyramid('A')).toStrictEqual(['A']);
+  });
+
+  it('Should get C pyramid', () => {
+    expect(getPyramid('C')).toStrictEqual(['  A  ', ' B B ', 'C   C']);
+  });
+});

diamond-ts/tsconfig.json

+{
+    "compilerOptions": {
+        "target": "esnext",
+        "module": "commonjs",
+        "noImplicitAny": true,
+        "removeComments": true,
+        "preserveConstEnums": true,
+        "outFile": "dist/main.js",
+        "sourceMap": true
+    },
+    "include": [
+        "src/**/*"
+    ],
+    "exclude": [
+        "node_modules",
+        "**/*.spec.ts"
+    ]
+}

readme.md

@@ -61,6 +61,7 @@ Un kata de code est un petit exercice pensé pour s'entrainer jusqu'à maitriser
 -   [Roman calculator](/roman-calculator)
 -   [H2G2](/h2g2)
 -   [Mastermind](/mastermind)
+-   [Diamond](/diamond-ts)
 
 ## Front