@tangany/eslint-config/rules/es6.js

Tangany's ESLint config

import TSESLint from "typescript-eslint";

export default TSESLint.config(
  {
    languageOptions: {
      ecmaVersion: 6,
      sourceType: "module",
    },
    rules: {
      // enforces no braces where they can be omitted
      // https://eslint.org/docs/rules/arrow-body-style
      "arrow-body-style": [
        "error",
        "as-needed",
        {
          requireReturnForObjectLiteral: false,
        },
      ],

      // 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 }],

      // enforce the spacing around the * in generator functions
      // https://eslint.org/docs/rules/generator-star-spacing
      "generator-star-spacing": ["error", { before: false, after: true }],

      // disallow arrow functions where they could be confused with comparisons
      // https://eslint.org/docs/rules/no-confusing-arrow
      "no-confusing-arrow": [
        "error",
        {
          allowParens: true,
        },
      ],

      // disallow symbol constructor
      // https://eslint.org/docs/rules/no-new-symbol
      "no-new-symbol": "error",

      // Disallow specified names in exports
      // https://eslint.org/docs/rules/no-restricted-exports
      "no-restricted-exports": [
        "error",
        {
          restrictedNamedExports: [
            "default", // use `export default` to provide a default export
            "then", // this will cause tons of confusion when your module is dynamically `import()`ed, and will break in most node ESM versions
          ],
        },
      ],

      // disallow useless computed property keys
      // https://eslint.org/docs/rules/no-useless-computed-key
      "no-useless-computed-key": "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",
        {
          ignoreConstructors: false,
          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: "any",
          ignoreReadBeforeAssign: true,
        },
      ],

      // Prefer destructuring from arrays and objects
      // https://eslint.org/docs/rules/prefer-destructuring
      "prefer-destructuring": [
        "error",
        {
          VariableDeclarator: {
            array: false,
            object: true,
          },
          AssignmentExpression: {
            array: true,
            object: false,
          },
        },
        {
          enforceForRenamedProperties: false,
        },
      ],

      // disallow parseInt() in favor of binary, octal, and hexadecimal literals
      // https://eslint.org/docs/rules/prefer-numeric-literals
      "prefer-numeric-literals": "error",

      // use rest parameters instead of arguments
      // https://eslint.org/docs/rules/prefer-rest-params
      "prefer-rest-params": "error",

      // suggest using the spread syntax instead of .apply()
      // https://eslint.org/docs/rules/prefer-spread
      "prefer-spread": "error",

      // suggest using template literals instead of string concatenation
      // https://eslint.org/docs/rules/prefer-template
      "prefer-template": "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,
          ignoreDeclarationSort: false,
          ignoreMemberSort: false,
          memberSyntaxSortOrder: ["none", "all", "multiple", "single"],
        },
      ],

      // require a Symbol description
      // https://eslint.org/docs/rules/symbol-description
      "symbol-description": "error",

      // enforce usage of spacing in 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"],
    },
  },
);