Refactor ESLint configuration.

1 files changed, 222 insertions, 198 deletions

diff --git a/js/.eslintrc.json b/js/.eslintrc.json
index 746f899f01..930e1f3c2b 100644
--- a/js/.eslintrc.json
+++ b/js/.eslintrc.json
@@ -1,206 +1,230 @@
 {
-    "root": true,
-    "parser": "babel-eslint",
-    "parserOptions": {
-        "ecmaVersion": 7,
-        "sourceType": "module"
-    },
-    "env": {
-        "browser": true,
-        "es6": true,
-        "jquery": true
-    },
-    "rules": {
+  "root": true,
+  "parser": "babel-eslint",
+  "env": {
+    "browser": true,
+    "es6": true,
+    "jquery": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 8,
+    "sourceType": "module"
+  },
+  "rules": {
+    // Possible Errors
+    "no-extra-parens": "error",
+    "no-prototype-builtins": "off",
+    "no-template-curly-in-string": "error",
+    "no-unsafe-negation": "error",
+    "valid-jsdoc": "error",
 
-        // Possible Errors
-        "array-callback-return": "error",
-        "comma-dangle": ["error", "never"],
-        "handle-callback-err": "error",
-        "no-bitwise": "error",
-        "no-cond-assign": "error",
-        "no-console": "error",
-        "no-constant-condition": "error",
-        "no-control-regex": "error",
-        "no-debugger": "error",
-        "no-dupe-args": "error",
-        "no-dupe-keys": "error",
-        "no-duplicate-case": "error",
-        "no-duplicate-imports": "error",
-        "no-empty": "error",
-        "no-empty-character-class": "error",
-        "no-empty-function": "error",
-        "no-empty-pattern": "error",
-        "no-ex-assign": "error",
-        "no-extra-boolean-cast": "error",
-        "no-extra-label": "error",
-        "no-extra-parens": "off",
-        "no-extra-semi": "error",
-        "no-func-assign": "error",
-        "no-inner-declarations": "error",
-        "no-invalid-regexp": "error",
-        "no-irregular-whitespace": "error",
-        "no-negated-in-lhs": "error",
-        "no-obj-calls": "error",
-        "no-regex-spaces": "error",
-        "no-restricted-globals": ["error", "event"],
-        "no-self-assign": "error",
-        "no-sparse-arrays": "error",
-        "no-unexpected-multiline": "error",
-        "no-unmodified-loop-condition": "error",
-        "no-unreachable": "error",
-        "no-unused-labels": "error",
-        "no-useless-escape": "error",
-        "no-useless-rename": "error",
-        "use-isnan": "error",
-        "valid-jsdoc": "off",
-        "valid-typeof": "error",
+    // Best Practices
+    "accessor-pairs": "error",
+    "array-callback-return": "error",
+    "block-scoped-var": "error",
+    "class-methods-use-this": "off",
+    "complexity": "error",
+    "consistent-return": "error",
+    "curly": "error",
+    "default-case": "error",
+    "dot-location": ["error", "property"],
+    "dot-notation": "error",
+    "eqeqeq": "error",
+    "guard-for-in": "error",
+    "no-alert": "error",
+    "no-caller": "error",
+    "no-div-regex": "error",
+    "no-else-return": "error",
+    "no-empty-function": "error",
+    "no-eq-null": "error",
+    "no-eval": "error",
+    "no-extend-native": "error",
+    "no-extra-bind": "error",
+    "no-extra-label": "error",
+    "no-floating-decimal": "error",
+    "no-global-assign": "error",
+    "no-implicit-coercion": "error",
+    "no-implicit-globals": "error",
+    "no-implied-eval": "error",
+    "no-invalid-this": "off",
+    "no-iterator": "error",
+    "no-labels": "error",
+    "no-lone-blocks": "error",
+    "no-loop-func": "error",
+    "no-magic-numbers": ["error", {
+      "ignore": [-1, 0, 1],
+      "ignoreArrayIndexes": true
+      }
+    ],
+    "no-multi-spaces": ["error", {
+      "exceptions": {
+        "AssignmentExpression": true,
+        "ArrowFunctionExpression": true,
+        "CallExpression": true,
+        "VariableDeclarator": true
+        }
+      }
+    ],
+    "no-multi-str": "error",
+    "no-new-func": "off",
+    "no-new-wrappers": "error",
+    "no-new": "error",
+    "no-octal-escape": "error",
+    "no-param-reassign": "off",
+    "no-proto": "error",
+    "no-restricted-properties": "error",
+    "no-return-assign": "off",
+    "no-script-url": "error",
+    "no-self-compare": "error",
+    "no-sequences": "error",
+    "no-throw-literal": "error",
+    "no-unmodified-loop-condition": "error",
+    "no-unused-expressions": "error",
+    "no-useless-call": "error",
+    "no-useless-concat": "error",
+    "no-useless-escape": "error",
+    "no-void": "error",
+    "no-warning-comments": "off",
+    "no-with": "error",
+    "radix": "error",
+    "vars-on-top": "error",
+    "wrap-iife": "error",
+    "yoda": "error",
 
-        //Best Practices
-        "accessor-pairs": "error",
-        "block-scoped-var": "error",
-        "consistent-return": "error",
-        "curly": "error",
-        "default-case": "error",
-        "dot-location": "off",
-        "dot-notation": "off",
-        "eqeqeq": "error",
-        "guard-for-in": "error",
-        "no-alert": "error",
-        "no-caller": "error",
-        "no-case-declarations": "error",
-        "no-div-regex": "error",
-        "no-else-return": "error",
-        "no-eq-null": "error",
-        "no-eval": "error",
-        "no-extend-native": "error",
-        "no-extra-bind": "error",
-        "no-fallthrough": "error",
-        "no-floating-decimal": "error",
-        "no-implicit-coercion": "error",
-        "no-implied-eval": "error",
-        "no-invalid-this": "off",
-        "no-iterator": "error",
-        "no-labels": "error",
-        "no-lone-blocks": "error",
-        "no-loop-func": "error",
-        "no-magic-numbers": ["error", {"ignore": [-1, 0, 1]}],
-        "no-multi-spaces": "off",
-        "no-multi-str": "error",
-        "no-native-reassign": "error",
-        "no-new": "error",
-        "no-new-func": "off",
-        "no-new-wrappers": "error",
-        "no-octal": "error",
-        "no-octal-escape": "error",
-        "no-param-reassign": "off",
-        "no-process-env": "error",
-        "no-proto": "error",
-        "no-redeclare": "error",
-        "no-return-assign": "error",
-        "no-script-url": "error",
-        "no-self-compare": "error",
-        "no-sequences": "error",
-        "no-throw-literal": "error",
-        "no-unused-expressions": "error",
-        "no-useless-call": "error",
-        "no-useless-concat": "error",
-        "no-useless-constructor": "error",
-        "no-void": "error",
-        "no-warning-comments": "off",
-        "no-with": "error",
-        "radix": "error",
-        "unicode-bom": ["error", "never"],
-        "vars-on-top": "off",
-        "wrap-iife": "error",
-        "yoda": "error",
+    // Strict Mode
+    "strict": "error",
 
-        // Variables
-        "init-declarations": "off",
-        "no-catch-shadow": "error",
-        "no-delete-var": "error",
-        "no-label-var": "error",
-        "no-shadow": "off",
-        "no-shadow-restricted-names": "error",
-        "no-undef": "error",
-        "no-undefined": "off",
-        "no-undef-init": "error",
-        "no-unused-vars": "error",
-        "no-use-before-define": "off",
+    // Variables
+    "init-declarations": "off",
+    "no-catch-shadow": "error",
+    "no-label-var": "error",
+    "no-restricted-globals": "error",
+    "no-shadow-restricted-names": "error",
+    "no-shadow": "off",
+    "no-undef-init": "error",
+    "no-undefined": "off",
+    "no-use-before-define": "off",
 
-        // Stylistic
-        "array-bracket-spacing": "error",
-        "block-spacing": "error",
-        "brace-style": "error",
-        "camelcase": "error",
-        "comma-spacing": "error",
-        "comma-style": "error",
-        "computed-property-spacing": "error",
-        "consistent-this": "error",
-        "eol-last": "error",
-        "func-names": "off",
-        "func-style": "off",
-        "indent": ["error", 2, {"SwitchCase": 1}],
-        "key-spacing": "off",
-        "keyword-spacing": "error",
-        "linebreak-style": "error",
-        "lines-around-comment": "off",
-        "max-statements-per-line": ["error", { "max": 1 }],
-        "new-cap": "off",
-        "newline-after-var": "off",
-        "new-parens": "error",
-        "no-array-constructor": "error",
-        "no-continue": "off",
-        "no-inline-comments": "off",
-        "no-lonely-if": "error",
-        "no-mixed-spaces-and-tabs": "error",
-        "no-multiple-empty-lines": "error",
-        "no-nested-ternary": "off",
-        "no-new-object": "error",
-        "no-spaced-func": "error",
-        "no-ternary": "off",
-        "no-trailing-spaces": "error",
-        "no-underscore-dangle": "off",
-        "no-unneeded-ternary": "error",
-        "no-unsafe-finally": "error",
-        "no-useless-computed-key": "error",
-        "no-whitespace-before-property": "error",
-        "object-curly-spacing": ["warn", "always"],
-        "object-property-newline": "error",
-        "one-var": "off",
-        "operator-assignment": "error",
-        "operator-linebreak": "off",
-        "padded-blocks": "off",
-        "quote-props": ["error", "as-needed"],
-        "quotes": ["error", "single"],
-        "semi": ["error", "never"],
-        "semi-spacing": "error",
-        "sort-vars": "error",
-        "space-before-blocks": "error",
-        "space-before-function-paren": "off",
-        "spaced-comment": "error",
-        "space-infix-ops": "error",
-        "space-in-parens": "error",
-        "space-unary-ops": "error",
+    // Node.js and CommonJS
+    "callback-return": "off",
+    "global-require": "error",
+    "handle-callback-err": "error",
+    "no-mixed-requires": "error",
+    "no-new-require": "error",
+    "no-path-concat": "error",
+    "no-process-env": "error",
+    "no-process-exit": "error",
+    "no-restricted-modules": "error",
+    "no-sync": "error",
 
-        // es6
-        "arrow-parens": "error",
-        "arrow-spacing": "error",
-        "constructor-super": "error",
-        "generator-star-spacing": "error",
-        "no-class-assign": "error",
-        "no-const-assign": "error",
-        "no-dupe-class-members": "error",
-        "no-new-symbol": "error",
-        "no-this-before-super": "error",
-        "no-var": "error",
-        "object-shorthand": "error",
-        "prefer-arrow-callback": "error",
-        "prefer-const": "off",
-        "prefer-reflect": "off",
-        "prefer-rest-params": "error",
-        "prefer-spread": "error",
-        "prefer-template": "error",
-        "require-yield": "error"
+    // Stylistic Issues
+    "array-bracket-spacing": "error",
+    "block-spacing": "error",
+    "brace-style": "error",
+    "camelcase": "error",
+    "comma-dangle": "error",
+    "comma-spacing": "error",
+    "comma-style": "error",
+    "computed-property-spacing": "error",
+    "consistent-this": "error",
+    "eol-last": "error",
+    "func-call-spacing": "error",
+    "func-names": "off",
+    "func-style": ["error", "declaration"],
+    "id-blacklist": "error",
+    "id-length": "off",
+    "id-match": "error",
+    "indent": ["error", 2, { "SwitchCase": 1 }],
+    "jsx-quotes": "error",
+    "key-spacing": "off",
+    "keyword-spacing": "error",
+    "line-comment-position": "off",
+    "linebreak-style": ["error", "unix"],
+    "lines-around-comment": "off",
+    "lines-around-directive": "error",
+    "max-depth": ["error", 10],
+    "max-len": "off",
+    "max-lines": "off",
+    "max-nested-callbacks": "error",
+    "max-params": "off",
+    "max-statements-per-line": "error",
+    "max-statements": "off",
+    "multiline-ternary": "off",
+    "new-cap": ["error", { "capIsNewExceptionPattern": "$.*" }],
+    "new-parens": "error",
+    "newline-after-var": "off",
+    "newline-before-return": "off",
+    "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 5 }],
+    "no-array-constructor": "error",
+    "no-bitwise": "error",
+    "no-continue": "off",
+    "no-inline-comments": "off",
+    "no-lonely-if": "error",
+    "no-mixed-operators": "off",
+    "no-multiple-empty-lines": "error",
+    "no-negated-condition": "off",
+    "no-nested-ternary": "error",
+    "no-new-object": "error",
+    "no-plusplus": "off",
+    "no-restricted-syntax": "error",
+    "no-tabs": "error",
+    "no-ternary": "off",
+    "no-trailing-spaces": "error",
+    "no-underscore-dangle": "off",
+    "no-unneeded-ternary": "error",
+    "no-whitespace-before-property": "error",
+    "object-curly-newline": ["error", { "minProperties": 1 }],
+    "object-curly-spacing": ["error", "always"],
+    "object-property-newline": "error",
+    "one-var-declaration-per-line": "error",
+    "one-var": ["error", "never"],
+    "operator-assignment": "error",
+    "operator-linebreak": "off",
+    "padded-blocks": "off",
+    "quote-props": ["error", "as-needed"],
+    "quotes": ["error", "single"],
+    "require-jsdoc": "off",
+    "semi-spacing": "error",
+    "semi": ["error", "never"],
+    "sort-keys": "off",
+    "sort-vars": "error",
+    "space-before-blocks": "error",
+    "space-before-function-paren": ["error", {
+        "anonymous": "always",
+        "named": "never"
+    }],
+    "space-in-parens": "error",
+    "space-infix-ops": "error",
+    "space-unary-ops": "error",
+    "spaced-comment": "error",
+    "unicode-bom": "error",
+    "wrap-regex": "off",
 
-    }
+    // ECMAScript 6
+    "arrow-body-style": "off",
+    "arrow-parens": "error",
+    "arrow-spacing": "error",
+    "generator-star-spacing": "error",
+    "no-confusing-arrow": "error",
+    "no-duplicate-imports": "error",
+    "no-restricted-imports": "error",
+    "no-useless-computed-key": "error",
+    "no-useless-constructor": "error",
+    "no-useless-rename": "error",
+    "no-var": "error",
+    "object-shorthand": "error",
+    "prefer-arrow-callback": "error",
+    "prefer-const": "error",
+    "prefer-numeric-literals": "error",
+    "prefer-reflect": "off",
+    "prefer-rest-params": "error",
+    "prefer-spread": "error",
+    "prefer-template": "error",
+    "rest-spread-spacing": "error",
+    "sort-imports": "error",
+    "symbol-description": "error",
+    "template-curly-spacing": "error",
+    "yield-star-spacing": "error"
+  }
 }