DND character

typescript/dnd-character/.eslintignore

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+!.meta
+
+# Protected or generated
+.git
+.vscode
+
+# When using npm
+node_modules/*
+
+# Configuration files
+.eslintrc.cjs
+babel.config.cjs
+jest.config.cjs

typescript/dnd-character/.eslintrc.cjs

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+module.exports = {
+  root: true,
+  parserOptions: {
+    tsconfigRootDir: __dirname,
+    project: ["./tsconfig.json"],
+  },
+  overrides: [
+    // Student provided files
+    {
+      files: ["*.ts"],
+      excludedFiles: [".meta/proof.ci.ts", ".meta/exemplar.ts", "*.test.ts"],
+      extends: "@exercism/eslint-config-typescript",
+      rules: {
+        "@typescript-eslint/semi": 0,
+      },
+    },
+    // Exercism given tests
+    {
+      files: ["*.test.ts"],
+      excludedFiles: ["custom.test.ts"],
+      env: {
+        jest: true,
+      },
+      extends: "@exercism/eslint-config-typescript/maintainers",
+      rules: {
+        "@typescript-eslint/semi": 0,
+      },
+    },
+    // Student provided tests
+    {
+      files: ["custom.test.ts"],
+      env: {
+        jest: true,
+      },
+      extends: "@exercism/eslint-config-typescript",
+    },
+    // Exercism provided files
+    {
+      files: [".meta/proof.ci.ts", ".meta/exemplar.ts", "*.test.ts"],
+      excludedFiles: ["custom.test.ts"],
+      extends: "@exercism/eslint-config-typescript/maintainers",
+    },
+  ],
+};

typescript/dnd-character/.exercism/config.json

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+{
+  "blurb": "Randomly generate Dungeons & Dragons characters.",
+  "authors": ["JoshiRaez", "SleeplessByte"],
+  "contributors": [],
+  "files": {
+    "solution": ["dnd-character.ts"],
+    "test": ["dnd-character.test.ts"],
+    "example": [".meta/proof.ci.ts"]
+  },
+  "source": "Simon Shine, Erik Schierboom",
+  "source_url": "https://github.com/exercism/problem-specifications/issues/616#issuecomment-437358945"
+}

typescript/dnd-character/.exercism/metadata.json

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+{"track":"typescript","exercise":"dnd-character","id":"3024ea9475214598a55ba78480591f66","url":"https://exercism.org/tracks/typescript/exercises/dnd-character","handle":"briemens","is_requester":true,"auto_approve":false}

typescript/dnd-character/HELP.md

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+# Help
+
+## Running the tests
+
+Execute the tests with:
+
+```bash
+$ yarn test
+```
+
+## Skipped tests
+
+In the test suites all tests but the first have been skipped.
+
+Once you get a test passing, you can enable the next one by changing `xit` to
+`it`.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit dnd-character.ts` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [TypeScript track's documentation](https://exercism.org/docs/tracks/typescript)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [TypeScript QuickStart](https://www.typescriptlang.org/docs/handbook/release-notes/overview.html)
+- [ECMAScript 2015 Language Specification](https://www.ecma-international.org/wp-content/uploads/ECMA-262_6th_edition_june_2015.pdf) (pdf)
+- [Mozilla JavaScript Reference](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference)
+- [/r/typescript](https://www.reddit.com/r/typescript) is the TypeScript subreddit.
+- [StackOverflow](https://stackoverflow.com/questions/tagged/typescript) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

typescript/dnd-character/README.md

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+# D&D Character
+
+Welcome to D&D Character on Exercism's TypeScript Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+For a game of [Dungeons & Dragons][dnd], each player starts by generating a
+character they can play with. This character has, among other things, six
+abilities; strength, dexterity, constitution, intelligence, wisdom and
+charisma. These six abilities have scores that are determined randomly. You
+do this by rolling four 6-sided dice and record the sum of the largest three
+dice. You do this six times, once for each ability.
+
+Your character's initial hitpoints are 10 + your character's constitution
+modifier. You find your character's constitution modifier by subtracting 10
+from your character's constitution, divide by 2 and round down.
+
+Write a random character generator that follows the rules above.
+
+For example, the six throws of four dice may look like:
+
+- 5, 3, 1, 6: You discard the 1 and sum 5 + 3 + 6 = 14, which you assign to strength.
+- 3, 2, 5, 3: You discard the 2 and sum 3 + 5 + 3 = 11, which you assign to dexterity.
+- 1, 1, 1, 1: You discard the 1 and sum 1 + 1 + 1 = 3, which you assign to constitution.
+- 2, 1, 6, 6: You discard the 1 and sum 2 + 6 + 6 = 14, which you assign to intelligence.
+- 3, 5, 3, 4: You discard the 3 and sum 5 + 3 + 4 = 12, which you assign to wisdom.
+- 6, 6, 6, 6: You discard the 6 and sum 6 + 6 + 6 = 18, which you assign to charisma.
+
+Because constitution is 3, the constitution modifier is -4 and the hitpoints are 6.
+
+## Notes
+
+Most programming languages feature (pseudo-)random generators, but few
+programming languages are designed to roll dice. One such language is [Troll].
+
+[dnd]: https://en.wikipedia.org/wiki/Dungeons_%26_Dragons
+[troll]: http://hjemmesider.diku.dk/~torbenm/Troll/
+
+## Source
+
+### Created by
+
+- @JoshiRaez
+- @SleeplessByte
+
+### Based on
+
+Simon Shine, Erik Schierboom - https://github.com/exercism/problem-specifications/issues/616#issuecomment-437358945

typescript/dnd-character/babel.config.cjs

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+module.exports = {
+  presets: ['@exercism/babel-preset-typescript'],
+  plugins: [],
+}

typescript/dnd-character/dnd-character.test.ts

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+/* eslint-disable @typescript-eslint/semi */
+import { DnDCharacter } from "./dnd-character";
+
+describe("Ability modifier", () => {
+  it("Ability modifier for score 3 is -4", () => {
+    expect(DnDCharacter.getModifierFor(3)).toEqual(-4);
+  });
+
+  it("Ability modifier for score 4 is -3", () => {
+    expect(DnDCharacter.getModifierFor(4)).toEqual(-3);
+  });
+
+  it("Ability modifier for score 5 is -3", () => {
+    expect(DnDCharacter.getModifierFor(5)).toEqual(-3);
+  });
+
+  it("Ability modifier for score 6 is -2", () => {
+    expect(DnDCharacter.getModifierFor(6)).toEqual(-2);
+  });
+
+  it("Ability modifier for score 7 is -2", () => {
+    expect(DnDCharacter.getModifierFor(7)).toEqual(-2);
+  });
+
+  it("Ability modifier for score 8 is -1", () => {
+    expect(DnDCharacter.getModifierFor(8)).toEqual(-1);
+  });
+
+  it("Ability modifier for score 9 is -1", () => {
+    expect(DnDCharacter.getModifierFor(9)).toEqual(-1);
+  });
+
+  it("Ability modifier for score 10 is 0", () => {
+    expect(DnDCharacter.getModifierFor(10)).toEqual(0);
+  });
+
+  it("Ability modifier for score 11 is 0", () => {
+    expect(DnDCharacter.getModifierFor(11)).toEqual(0);
+  });
+
+  it("Ability modifier for score 12 is 1", () => {
+    expect(DnDCharacter.getModifierFor(12)).toEqual(1);
+  });
+
+  it("Ability modifier for score 13 is 1", () => {
+    expect(DnDCharacter.getModifierFor(13)).toEqual(1);
+  });
+
+  it("Ability modifier for score 14 is 2", () => {
+    expect(DnDCharacter.getModifierFor(14)).toEqual(2);
+  });
+
+  it("Ability modifier for score 15 is 2", () => {
+    expect(DnDCharacter.getModifierFor(15)).toEqual(2);
+  });
+
+  it("Ability modifier for score 16 is 3", () => {
+    expect(DnDCharacter.getModifierFor(16)).toEqual(3);
+  });
+
+  it("Ability modifier for score 17 is 3", () => {
+    expect(DnDCharacter.getModifierFor(17)).toEqual(3);
+  });
+
+  it("Ability modifier for score 18 is 4", () => {
+    expect(DnDCharacter.getModifierFor(18)).toEqual(4);
+  });
+});
+
+describe("Ability generator", () => {
+  it("Random ability is within range", () => {
+    const abilityScore = DnDCharacter.generateAbilityScore();
+    expect(abilityScore).toBeGreaterThanOrEqual(3);
+    expect(abilityScore).toBeLessThanOrEqual(18);
+  });
+});
+
+describe("Character creation", () => {
+  it("Random character is valid", () => {
+    const character = new DnDCharacter();
+
+    expect(character.hitpoints).toEqual(
+      10 + DnDCharacter.getModifierFor(character.constitution)
+    );
+
+    expect(character.strength).toBeGreaterThanOrEqual(3);
+    expect(character.strength).toBeLessThanOrEqual(18);
+
+    expect(character.dexterity).toBeGreaterThanOrEqual(3);
+    expect(character.dexterity).toBeLessThanOrEqual(18);
+
+    expect(character.constitution).toBeGreaterThanOrEqual(3);
+    expect(character.constitution).toBeLessThanOrEqual(18);
+
+    expect(character.intelligence).toBeGreaterThanOrEqual(3);
+    expect(character.intelligence).toBeLessThanOrEqual(18);
+
+    expect(character.wisdom).toBeGreaterThanOrEqual(3);
+    expect(character.wisdom).toBeLessThanOrEqual(18);
+
+    expect(character.charisma).toBeGreaterThanOrEqual(3);
+    expect(character.charisma).toBeLessThanOrEqual(18);
+  });
+
+  it("Each ability is only calculated once", () => {
+    const character = new DnDCharacter();
+
+    expect(character.strength === character.strength).toBeTruthy();
+  });
+});

typescript/dnd-character/dnd-character.ts

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+export class DnDCharacter {
+  private _strength: number;
+  private _dexterity: number;
+  private _constituion: number;
+  private _intelligence: number;
+  private _wisdom: number;
+  private _charisma: number;
+
+  constructor() {
+    this._strength = DnDCharacter.generateAbilityScore();
+    this._dexterity = DnDCharacter.generateAbilityScore();
+    this._constituion = DnDCharacter.generateAbilityScore();
+    this._intelligence = DnDCharacter.generateAbilityScore();
+    this._wisdom = DnDCharacter.generateAbilityScore();
+    this._charisma = DnDCharacter.generateAbilityScore();
+  }
+
+  public static generateAbilityScore(): number {
+    return Math.floor(3 + Math.random() * (18 - 3));
+  }
+
+  public static getModifierFor(abilityValue: number): number {
+    return Math.floor((abilityValue - 10) / 2);
+  }
+
+  get hitpoints(): number {
+    return 10 + DnDCharacter.getModifierFor(this._constituion);
+  }
+  get strength(): number {
+    return this._strength;
+  }
+  get dexterity(): number {
+    return this._dexterity;
+  }
+  get constitution(): number {
+    return this._constituion;
+  }
+  get intelligence(): number {
+    return this._intelligence;
+  }
+  get wisdom(): number {
+    return this._wisdom;
+  }
+  get charisma(): number {
+    return this._charisma;
+  }
+}

typescript/dnd-character/jest.config.cjs

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+module.exports = {
+  verbose: true,
+  projects: ['<rootDir>'],
+  testMatch: [
+    '**/__tests__/**/*.[jt]s?(x)',
+    '**/test/**/*.[jt]s?(x)',
+    '**/?(*.)+(spec|test).[jt]s?(x)',
+  ],
+  testPathIgnorePatterns: [
+    '/(?:production_)?node_modules/',
+    '.d.ts$',
+    '<rootDir>/test/fixtures',
+    '<rootDir>/test/helpers',
+    '__mocks__',
+  ],
+  transform: {
+    '^.+\\.[jt]sx?$': 'babel-jest',
+  },
+}

typescript/dnd-character/package.json

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+{
+  "name": "@exercism/typescript-dnd-character",
+  "version": "1.0.0",
+  "description": "Exercism practice exercise on dnd-character",
+  "private": true,
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/exercism/typescript"
+  },
+  "type": "module",
+  "engines": {
+    "node": "^14.13.1 || >=16.0.0"
+  },
+  "devDependencies": {
+    "@exercism/babel-preset-typescript": "^0.1.0",
+    "@exercism/eslint-config-typescript": "^0.4.1",
+    "@types/jest": "^27.4.0",
+    "@types/node": "^16.11.24",
+    "babel-jest": "^27.5.1",
+    "core-js": "^3.21.0",
+    "eslint": "^8.9.0",
+    "jest": "^27.5.1",
+    "typescript": "^4.5.4"
+  },
+  "scripts": {
+    "test": "yarn lint:types && jest --no-cache",
+    "lint": "yarn lint:types && yarn lint:ci",
+    "lint:types": "yarn tsc --noEmit -p .",
+    "lint:ci": "eslint . --ext .tsx,.ts"
+  }
+}

typescript/dnd-character/tsconfig.json

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+{
+  "display": "Configuration for Exercism TypeScript Exercises",
+  "compilerOptions": {
+    // Allows you to use the newest syntax, and have access to console.log
+    // https://www.typescriptlang.org/tsconfig#lib
+    "lib": ["ESNEXT", "dom"],
+    // Make sure typescript is configured to output ESM
+    // https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c#how-can-i-make-my-typescript-project-output-esm
+    "module": "ES2020",
+    // Since this project is using babel, TypeScript may target something very
+    // high, and babel will make sure it runs on your local Node version.
+    // https://babeljs.io/docs/en/
+    "target": "ESNext", // ESLint doesn't support this yet: "es2022",
+
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+
+    // Because we'll be using babel: ensure that Babel can safely transpile
+    // files in the TypeScript project.
+    //
+    // https://babeljs.io/docs/en/babel-plugin-transform-typescript/#caveats
+    "isolatedModules": true
+  },
+  "include": ["*.ts", "*.tsx", ".meta/*.ts", ".meta/*.tsx"],
+  "exclude": ["node_modules"]
+}