Adopting TypeScript with ESLint

module.exports = {
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  extends: [
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    'plugin:eslint-comments/recommended',
    'prettier/@typescript-eslint', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
    'plugin:prettier/recommended', // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
  ],
  parserOptions: {
    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
  },
  rules: {
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
  },
  env: {
    browser: true,
    node: true,
    es2020: true,
  },
  overrides: [
    {
      files: ['*.ts', '*.tsx'],
      rules: {
        // override/add rules settings specifically for TypeScript files
      }
    },
    {
      files: ['*.js'],
      rules: {
        // override/add rules settings specifically for JavaScript files
      }
    }
  ]
}

// Sample TypeScript file: example.ts

interface IExample {
  attribute: string;
}

class Example implements IExample {
  public attribute: string;

  constructor(value: string) {
    this.attribute = value;
  }

  public greet(): void {
    console.log(`Hello, ${this.attribute}!`);
  }
}

// Sample JavaScript file: example.js

function greet(name) {
  console.log('Hello, ' + name + '!');
}