@perfective/eslint-config/linter/language-options.js

ESLint shareable rules configuration

import { parser as typescriptEslintParser } from 'typescript-eslint';
export function languageOptions() {
  return {
    sourceType: 'module',
    ecmaVersion: 'latest',
    parser: typescriptEslintParser,
    parserOptions: {
      ecmaFeatures: {
        globalReturn: false,
        impliedStrict: true
      },
      projectService: {
        allowDefaultProject: ['?(.)*.?(m|c)js']
      },
      warnOnUnsupportedTypeScriptVersion: true
    }
  };
}
export function javascriptLanguageOptions() {
  return {
    sourceType: 'module',
    ecmaVersion: 'latest',
    parserOptions: {
      ecmaFeatures: {
        globalReturn: false,
        impliedStrict: true
      }
    }
  };
}
export function typescriptLanguageOptions() {
  return {
    sourceType: 'module',
    ecmaVersion: 'latest',
    parser: typescriptEslintParser,
    parserOptions: {
      ecmaFeatures: {
        globalReturn: false,
        impliedStrict: true
      },
      projectService: true,
      warnOnUnsupportedTypeScriptVersion: true
    }
  };
}