.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended-requiring-type-checking',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    sourceType: 'module',
    project: './tsconfig.json',
  },
  plugins: ['@typescript-eslint'],
  settings: {
    'import/parsers': {
      '@typescript-eslint/parser': ['.ts'],
    },
    'import/resolver': {
      typescript: {
        alwaysTryTypes: true,
        project: ['tsconfig.json'],
      },
    },
  },
  rules: {
    '@typescript-eslint/no-unsafe-assignment': 'off',
    '@typescript-eslint/ban-ts-comment': 'off',
  },
  overrides: [
    {
      files: ['tests/**/*.ts'],
      parserOptions: {
        sourceType: 'module',
        project: './tsconfig.test.json',
      },
      env: {
        browser: true,
        node: true,
        mocha: true,
      },
      globals: {
        chai: true,
        expect: true,
      },
    },
  ],
};