sharyn/eslint-config/index.js

"use strict";

var _checkSetup = require("@sharyn/check-setup");

// flow-disable-next-line
var config = {
  extends: [],
  plugins: [],
  env: {
    browser: true
  },
  globals: {},
  rules: {
    'no-unused-expressions': 0,
    'no-underscore-dangle': 0,
    'func-names': 0,
    'no-unexpected-multiline': 2,
    'prefer-destructuring': [2, {
      VariableDeclarator: {
        object: true,
        array: true
      },
      AssignmentExpression: {
        object: false,
        array: false
      }
    }],
    semi: [2, 'never']
  },
  settings: {}
};

if ((0, _checkSetup.hasPackage)('eslint-config-airbnb') && (0, _checkSetup.hasPackage)('eslint-config-airbnb-base')) {
  throw Error('Your package.json should either have eslint-config-airbnb or eslint-config-airbnb-base as a dependency but not both');
}

if ((0, _checkSetup.hasPackage)('eslint-config-airbnb')) {
  config.extends.push('airbnb');

  if (!(0, _checkSetup.hasPackage)('eslint-plugin-import')) {
    throw Error('eslint-config-airbnb requires having eslint-plugin-import installed');
  }

  if (!(0, _checkSetup.hasPackage)('eslint-plugin-react')) {
    throw Error('eslint-config-airbnb requires having eslint-plugin-react installed');
  }

  if (!(0, _checkSetup.hasPackage)('eslint-plugin-jsx-a11y')) {
    throw Error('eslint-config-airbnb requires having eslint-plugin-jsx-a11y installed');
  }
}

if ((0, _checkSetup.hasPackage)('eslint-config-airbnb-base')) {
  config.extends.push('airbnb-base');

  if (!(0, _checkSetup.hasPackage)('eslint-plugin-import')) {
    throw Error('eslint-config-airbnb-base requires having eslint-plugin-import installed');
  }
}

if ((0, _checkSetup.hasPackage)('jest-puppeteer')) {
  config.globals.page = true;
  config.globals.browser = true;
  config.globals.jestPuppeteer = true;
}

if ((0, _checkSetup.hasPackage)('jest')) {
  config.env.jest = true;
}

if ((0, _checkSetup.hasPackage)('eslint-plugin-flowtype')) {
  config.extends.push('plugin:flowtype/recommended');
  config.plugins.push('flowtype');

  if (!(0, _checkSetup.hasPackage)('flow-bin')) {
    throw Error('eslint-plugin-flowtype requires having flow-bin installed');
  }

  if (!(0, _checkSetup.hasPackage)('babel-eslint')) {
    throw Error('eslint-plugin-flowtype requires having babel-eslint installed');
  }
}

if ((0, _checkSetup.hasPackage)('eslint-plugin-prettier')) {
  config.plugins.push('prettier');
  config.rules['prettier/prettier'] = 2;

  if (!(0, _checkSetup.hasPackage)('prettier')) {
    throw Error('eslint-plugin-prettier requires having prettier installed');
  }
}

if ((0, _checkSetup.hasPackage)('eslint-config-prettier')) {
  config.extends.push('prettier');

  if ((0, _checkSetup.hasPackage)('react')) {
    config.extends.push('prettier/react');
  }

  if ((0, _checkSetup.hasPackage)('flow-bin')) {
    config.extends.push('prettier/flowtype');
  }

  if (!(0, _checkSetup.hasPackage)('prettier')) {
    throw Error('eslint-config-prettier requires having prettier installed');
  }
}

if ((0, _checkSetup.hasPackage)('eslint-plugin-react')) {
  config.rules['react/require-default-props'] = 0;
  config.rules['react/jsx-filename-extension'] = [2, {
    extensions: ['.js']
  }];

  if (!(0, _checkSetup.hasPackage)('eslint-config-airbnb')) {
    config.extends.push('plugin:react/recommended');
  }

  if (!(0, _checkSetup.hasPackage)('react')) {
    throw Error('eslint-plugin-react requires having react installed');
  }
}

if ((0, _checkSetup.hasPackage)('eslint-plugin-import')) {
  config.rules['import/prefer-default-export'] = 0;
}

if ((0, _checkSetup.hasPackage)('eslint-import-resolver-babel-module')) {
  config.settings['import/resolver'] = {
    'babel-module': {}
  };

  if (!(0, _checkSetup.hasPackage)('@babel/core')) {
    throw Error('eslint-import-resolver-babel-module requires having @babel/core installed');
  }

  if (!(0, _checkSetup.hasPackage)('babel-plugin-module-resolver')) {
    throw Error('eslint-import-resolver-babel-module requires having babel-plugin-module-resolver installed');
  }

  if (!(0, _checkSetup.hasPackage)('eslint-plugin-import')) {
    throw Error('eslint-import-resolver-babel-module requires having eslint-plugin-import installed');
  }
}

if ((0, _checkSetup.hasPackage)('@babel/plugin-proposal-do-expressions') && !(0, _checkSetup.hasPackage)('babel-eslint')) {
  throw Error('@babel/plugin-proposal-do-expressions requires having babel-eslint installed');
}

if ((0, _checkSetup.hasPackage)('@babel/plugin-proposal-nullish-coalescing-operator') && !(0, _checkSetup.hasPackage)('babel-eslint')) {
  throw Error('@babel/plugin-proposal-nullish-coalescing-operator requires having babel-eslint installed');
}

if ((0, _checkSetup.hasPackage)('@babel/plugin-proposal-optional-chaining') && !(0, _checkSetup.hasPackage)('babel-eslint')) {
  throw Error('@babel/plugin-proposal-optional-chaining requires having babel-eslint installed');
}

if ((0, _checkSetup.hasPackage)('@babel/plugin-proposal-pipeline-operator') && !(0, _checkSetup.hasPackage)('babel-eslint')) {
  throw Error('@babel/plugin-proposal-pipeline-operator requires having babel-eslint installed');
}

if ((0, _checkSetup.hasPackage)('flow-bin') && !(0, _checkSetup.hasPackage)('babel-eslint')) {
  throw Error('flow-bin requires having babel-eslint installed');
}

if ((0, _checkSetup.hasPackage)('babel-eslint')) {
  config.parser = 'babel-eslint';
}

if ((0, _checkSetup.hasPackage)('react')) {
  config.parserOptions = {
    ecmaFeatures: {
      jsx: true
    }
  };
}

module.exports = config;