eslint-config-7geese/rules/eslint/es6.js

An eslint config to enforce JavaScript coding style at 7Geese.

module.exports = {
    env: {
        es6: true,
    },
    rules: {
        // require braces in arrow function body
        // https://eslint.org/docs/rules/arrow-body-style
        'arrow-body-style': 'off',
        // require parens in arrow function arguments
        // https://eslint.org/docs/rules/arrow-parens
        'arrow-parens': ['error', 'always'],
        // require space before/after arrow function's arrow
        // https://eslint.org/docs/rules/arrow-spacing
        'arrow-spacing': ['error', {
            before: true,
            after: true,
        }],
        // verify super() callings in constructors
        'constructor-super': 'error',
        // enforce no space before * and space after * in generator functions
        // https://eslint.org/docs/rules/generator-star-spacing
        'generator-star-spacing': ['warn', {
            before: false,
            after: true,
        }],
        // disallow modifying variables of class declarations
        'no-class-assign': 'error',
        // disallow arrow functions where they could be confused with comparisons
        // https://eslint.org/docs/rules/no-confusing-arrow
        'no-confusing-arrow': 'off',
        // disallow modifying variables that are declared using const
        'no-const-assign': 'error',
        // disallow duplicate name in class members
        // https://eslint.org/docs/rules/no-dupe-class-members
        'no-dupe-class-members': 'error',
        // disallow duplicate module imports
        // replaced by https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-duplicates.md
        'no-duplicate-imports': 'error',
        // disallow use of the new operator with the Symbol object
        // https://eslint.org/docs/rules/no-new-symbol
        'no-new-symbol': 'error',
        // restrict usage of specified modules when loaded by import declaration
        'no-restricted-imports': 'off',
        // disallow to use this/super before super() calling in constructors.
        'no-this-before-super': 'error',
        // disallow unnecessary computed property keys in object literals
        'no-useless-computed-key': 'error',
        // disallow unnecessary constructor
        'no-useless-constructor': 'error',
        // disallow renaming import, export, and destructured assignments to the same name
        // https://eslint.org/docs/rules/no-useless-rename
        'no-useless-rename': ['error', {
            ignoreDestructuring: false,
            ignoreImport: false,
            ignoreExport: false,
        }],
        // require let or const instead of var
        'no-var': 'error',
        // require method and property shorthand syntax for object literals
        // https://eslint.org/docs/rules/object-shorthand
        'object-shorthand': ['error', 'always', { avoidQuotes: true }],
        // suggest using arrow functions as callbacks
        'prefer-arrow-callback': ['error', {
            allowNamedFunctions: false,
            allowUnboundThis: true,
        }],
        // suggest using of const declaration for variables that are never modified after declared
        'prefer-const': ['error', {
            destructuring: 'all',
            ignoreReadBeforeAssign: true,
        }],
        // Prefer destructuring from arrays and objects
        // https://eslint.org/docs/rules/prefer-destructuring
        'prefer-destructuring': ['error', {
            object: true,
            array: false,
        }, {
            enforceForRenamedProperties: false,
        }],
        // https://eslint.org/docs/rules/prefer-promise-reject-errors
        'prefer-promise-reject-errors': 'off',
        // suggest using Reflect methods where applicable
        // https://eslint.org/docs/rules/prefer-reflect
        'prefer-reflect': 'off',
        // suggest using the rest parameters instead of arguments
        // https://eslint.org/docs/rules/prefer-rest-params
        'prefer-rest-params': 'error',
        // suggest using the spread operator instead of .apply()
        // https://eslint.org/docs/rules/prefer-spread
        'prefer-spread': 'error',
        // suggest using template literals instead of strings concatenation
        // https://eslint.org/docs/rules/prefer-template
        'prefer-template': 'error',
        // Ensure that async functions use await
        // https://eslint.org/docs/4.0.0/rules/require-await
        'require-await': 'error',
        // disallow generator functions that do not have yield
        // https://eslint.org/docs/rules/require-yield
        'require-yield': 'error',
        // enforce spacing between object rest-spread
        // https://eslint.org/docs/rules/rest-spread-spacing
        'rest-spread-spacing': ['error', 'never'],
        // import sorting
        // https://eslint.org/docs/rules/sort-imports
        'sort-imports': ['off', {
            ignoreCase: false,
            ignoreMemberSort: false,
            memberSyntaxSortOrder: ['none', 'all', 'multiple', 'single'],
        }],
        // require a Symbol description
        // https://eslint.org/docs/rules/symbol-description
        'symbol-description': 'error',
        // enforce spacing around embedded expressions of template strings
        // https://eslint.org/docs/rules/template-curly-spacing
        'template-curly-spacing': 'error',
        // enforce spacing around the * in yield* expressions
        // https://eslint.org/docs/rules/yield-star-spacing
        'yield-star-spacing': ['error', 'after'],
        // use ** instead of Math.Pow
        // https://eslint.org/docs/rules/prefer-exponentiation-operator
        'prefer-exponentiation-operator': 'warn',
    },
};