base.js

module.exports = {
  plugins: ['import'],

  rules: {
    // -- Generic rules
    'import/no-extraneous-dependencies': ['error', { devDependencies: true }],
    'import/no-unresolved': 'off',
    'newline-before-return': 'error',
    'no-console': ['warn'],
    'no-restricted-syntax': 'off',
    'no-shadow': 'off',
    '@typescript-eslint/no-shadow': 'off',
    'no-return-assign': ['error', 'except-parens'],
    'no-plusplus': ['error', { allowForLoopAfterthoughts: true }],
    '@typescript-eslint/return-await': 'off',

    // -- No default exports
    'import/no-default-export': 'error',
    'import/prefer-default-export': 'off',

    // -- Code formatting
    indent: 'off',
    '@typescript-eslint/indent': [
      'error',
      2,
      {
        SwitchCase: 1,
        ignoredNodes: [
          'FunctionExpression > .params[decorators.length > 0]',
          'FunctionExpression > .params > :matches(Decorator, :not(:first-child))',
          'ClassBody.body > PropertyDefinition[decorators.length > 0] > .key',
        ],
      },
    ],
    '@typescript-eslint/type-annotation-spacing': [
      'error',
      { before: false, after: true, overrides: { arrow: { before: true, after: true } } },
    ],
    '@typescript-eslint/member-delimiter-style': 'error',
    'eol-last': ['error', 'always'],
    'no-trailing-spaces': ['error'],
    'array-bracket-spacing': ['error', 'never'],
    'comma-dangle': ['error', 'always-multiline'],
    '@typescript-eslint/comma-dangle': ['error', 'always-multiline'],
    'max-len': [
      'error',
      {
        code: 100,
        ignoreComments: true,
        ignoreUrls: true,
        ignoreStrings: true,
        ignoreTemplateLiterals: true,
      },
    ],
    'no-multiple-empty-lines': ['error', { max: 1, maxEOF: 1, maxBOF: 0 }],
    '@typescript-eslint/brace-style': ['error', '1tbs', { allowSingleLine: false }],
    curly: ['error', 'all'],
    'key-spacing': 'error',

    // -- Typescript
    '@typescript-eslint/ban-types': [
      'error',
      {
        types: {
          String: { message: 'Use string instead', fixWith: 'string' },
          Number: { message: 'Use number instead', fixWith: 'number' },
          Boolean: { message: 'Use boolean instead', fixWith: 'boolean' },
        },
      },
    ],
    '@typescript-eslint/no-namespace': 'error',
  },

  overrides: [
    {
      files: ['src/**/*.spec.ts', 'src/**/*.spec.tsx'],
      rules: {
        'max-len': 'off',
      },
    },
  ],
};