module.exports = {
  env: {
    browser: true,
    commonjs: true,
    es6: true,
    node: true
  },
  root: true,
  parserOptions: {
    parser: 'babel-eslint',
    ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module' // Allows for the use of imports
  },
  // https://github.com/feross/standard/blob/master/RULES.md#javascript-standard-style
  extends: [
    // Base ESLint recommended rules
    // 'eslint:recommended',

    // Uncomment any of the lines below to choose desired strictness,
    // but leave only one uncommented!
    // See https://eslint.vuejs.org/rules/#available-rules
    'plugin:vue/essential', // Priority A: Essential (Error Prevention)
    // 'plugin:vue/strongly-recommended', // Priority B: Strongly Recommended (Improving Readability)
    // 'plugin:vue/recommended', // Priority C: Recommended (Minimizing Arbitrary Choices and Cognitive Overhead)

    'standard'
  ],
  globals: {
    Cesium: true,
    mars3d: true,
    DC: true
  },
  // required to lint *.vue files
  plugins: [
    'vue',
    'html'
  ],
  // add your custom rules here
  rules: {
    // allow paren-less arrow functions
    'arrow-parens': 0,
    // allow async-await
    'generator-star-spacing': 0,
    // allow debugger during development
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
    // 允许短路表达式
    'no-unused-expressions': 0,
    'no-mixed-operators': 0
  }
}