Clean up @babel/eslint-plugin (#10756)

* Clean up @babel/eslint-plugin

* Add directory field to package.json

* Update eslint/babel-eslint-plugin/README.md

Co-Authored-By: Huáng Jùnliàng <jlhwung@gmail.com>

* Incorporate feedback :)

eslint/babel-eslint-plugin/README.md

@@ -1,24 +1,22 @@
-# eslint-plugin-babel
+# @babel/eslint-plugin
 
-An `eslint` plugin companion to `babel-eslint`. `babel-eslint` does a great job at adapting `eslint`
+Companion rules for `@babel/eslint-parser`. `@babel/eslint-parser` does a great job at adapting `eslint`
 for use with Babel, but it can't change the built in rules to support experimental features.
-`eslint-plugin-babel` re-implements problematic rules so they do not give false positives or negatives.
+`@babel/eslint-plugin` re-implements problematic rules so they do not give false positives or negatives.
 
-> Requires Node 4 or greater
+> Requires Node 10.9 or greater
 
 ### Install
 
 ```sh
-npm install eslint-plugin-babel --save-dev
+npm install @babel/eslint-plugin --save-dev
 ```
 
-Load the plugin in your `.eslintrc` file:
+Load the plugin in your `.eslintrc.json` file:
 
 ```json
 {
-  "plugins": [
-    "babel"
-  ]
+  "plugins": ["@babel/eslint-plugin"]
 }
 ```
 
@@ -28,14 +26,14 @@ original ones as well!).
 ```json
 {
   "rules": {
-    "babel/new-cap": 1,
-    "babel/camelcase": 1,
-    "babel/no-invalid-this": 1,
-    "babel/object-curly-spacing": 1,
-    "babel/quotes": 1,
-    "babel/semi": 1,
-    "babel/no-unused-expressions": 1,
-    "babel/valid-typeof": 1
+    "babel/new-cap": "error",
+    "babel/camelcase": "error",
+    "babel/no-invalid-this": "error",
+    "babel/object-curly-spacing": "error",
+    "babel/quotes": "error",
+    "babel/semi": "error",
+    "babel/no-unused-expressions": "error",
+    "babel/valid-typeof": "error"
   }
 }
 ```

eslint/babel-eslint-plugin/package.json

@@ -1,11 +1,12 @@
 {
-  "name": "eslint-plugin-babel",
-  "version": "5.3.0",
-  "description": "an eslint rule plugin companion to babel-eslint",
+  "name": "@babel/eslint-plugin",
+  "version": "0.0.0",
+  "description": "Companion rules for @babel/eslint-parser",
   "main": "lib/index.js",
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/babel/eslint-plugin-babel.git"
+    "url": "git+https://github.com/babel/babel.git",
+    "directory": "eslint/babel-eslint-plugin"
   },
   "keywords": [
     "babel",
@@ -18,12 +19,12 @@
   "license": "MIT",
   "private": true,
   "engines": {
-    "node": ">=4"
+    "node": ">=10.9"
   },
   "bugs": {
-    "url": "https://github.com/babel/eslint-plugin-babel/issues"
+    "url": "https://github.com/babel/babel/issues"
   },
-  "homepage": "https://github.com/babel/eslint-plugin-babel#readme",
+  "homepage": "https://github.com/babel/babel/tree/master/eslint/babel-eslint-plugin",
   "peerDependencies": {
     "eslint": ">=4.0.0"
   },

eslint/babel-eslint-plugin/src/index.js

@@ -1,38 +1,52 @@
-"use strict";
+import arrayBracketSpacing from "./rules/array-bracket-spacing";
+import arrowParens from "./rules/arrow-parens";
+import flowObjectType from "./rules/flow-object-type";
+import funcParamsCommaDangle from "./rules/func-params-comma-dangle";
+import generatorStarSpacing from "./rules/generator-star-spacing";
+import newCap from "./rules/new-cap";
+import camelcase from "./rules/camelcase";
+import noAwaitInLoop from "./rules/no-await-in-loop";
+import noInvalidThis from "./rules/no-invalid-this";
+import noUnusedExpressions from "./rules/no-unused-expressions";
+import objectCurlySpacing from "./rules/object-curly-spacing";
+import objectShorthand from "./rules/object-shorthand";
+import quotes from "./rules/quotes";
+import semi from "./rules/semi";
+import validTypeof from "./rules/valid-typeof";
 
 module.exports = {
   rules: {
-    "array-bracket-spacing": require("./rules/array-bracket-spacing"),
-    "arrow-parens": require("./rules/arrow-parens"),
-    "flow-object-type": require("./rules/flow-object-type"),
-    "func-params-comma-dangle": require("./rules/func-params-comma-dangle"),
-    "generator-star-spacing": require("./rules/generator-star-spacing"),
-    "new-cap": require("./rules/new-cap"),
-    camelcase: require("./rules/camelcase"),
-    "no-await-in-loop": require("./rules/no-await-in-loop"),
-    "no-invalid-this": require("./rules/no-invalid-this"),
-    "no-unused-expressions": require("./rules/no-unused-expressions"),
-    "object-curly-spacing": require("./rules/object-curly-spacing"),
-    "object-shorthand": require("./rules/object-shorthand"),
-    quotes: require("./rules/quotes"),
-    semi: require("./rules/semi"),
-    "valid-typeof": require("./rules/valid-typeof"),
+    "array-bracket-spacing": arrayBracketSpacing,
+    "arrow-parens": arrowParens,
+    "flow-object-type": flowObjectType,
+    "func-params-comma-dangle": funcParamsCommaDangle,
+    "generator-star-spacing": generatorStarSpacing,
+    "new-cap": newCap,
+    camelcase,
+    "no-await-in-loop": noAwaitInLoop,
+    "no-invalid-this": noInvalidThis,
+    "no-unused-expressions": noUnusedExpressions,
+    "object-curly-spacing": objectCurlySpacing,
+    "object-shorthand": objectShorthand,
+    quotes,
+    semi,
+    "valid-typeof": validTypeof,
   },
   rulesConfig: {
-    "array-bracket-spacing": 0,
-    "arrow-parens": 0,
-    camelcase: 0,
-    "flow-object-type": 0,
-    "func-params-comma-dangle": 0,
-    "generator-star-spacing": 0,
-    "new-cap": 0,
-    "no-await-in-loop": 0,
-    "no-invalid-this": 0,
-    "no-unused-expressions": 0,
-    "object-curly-spacing": 0,
-    "object-shorthand": 0,
-    quotes: 0,
-    semi: 0,
-    "valid-typeof": 0,
+    "array-bracket-spacing": "off",
+    "arrow-parens": "off",
+    camelcase: "off",
+    "flow-object-type": "off",
+    "func-params-comma-dangle": "off",
+    "generator-star-spacing": "off",
+    "new-cap": "off",
+    "no-await-in-loop": "off",
+    "no-invalid-this": "off",
+    "no-unused-expressions": "off",
+    "object-curly-spacing": "off",
+    "object-shorthand": "off",
+    quotes: "off",
+    semi: "off",
+    "valid-typeof": "off",
   },
 };

eslint/babel-eslint-plugin/src/rules/array-bracket-spacing.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -25,9 +24,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/arrow-parens.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -10,9 +9,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/camelcase.js

@@ -9,7 +9,7 @@
 // Rule Definition
 //------------------------------------------------------------------------------
 
-module.exports = {
+export default {
   meta: {
     docs: {
       description: "enforce camelcase naming convention",

eslint/babel-eslint-plugin/src/rules/flow-object-type.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -10,9 +9,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))
@@ -24,7 +23,7 @@ module.exports = {
           "The babel/flow-object-type rule is deprecated. Please " +
             "use the flowtype/object-type-delimiter rule instead.\n" +
             // eslint-disable-next-line
-            "Check out https://github.com/gajus/eslint-plugin-flowtype#eslint-plugin-flowtype-rules-object-type-delimiter"
+            "Check out https://github.com/gajus/eslint-plugin-flowtype#eslint-plugin-flowtype-rules-object-type-delimiter",
         );
 
         isWarnedForDeprecation = true;

eslint/babel-eslint-plugin/src/rules/func-params-comma-dangle.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -10,9 +9,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/generator-star-spacing.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -22,9 +21,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/new-cap.js

@@ -1,7 +1,6 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const newCapRule = new eslint.Linter().getRules().get("new-cap");
 
 /**
@@ -13,7 +12,7 @@ function isDecorator(node) {
   return node.parent.type === "Decorator";
 }
 
-module.exports = ruleComposer.filterReports(
+export default ruleComposer.filterReports(
   newCapRule,
   problem => !isDecorator(problem.node),
 );

eslint/babel-eslint-plugin/src/rules/no-await-in-loop.js

@@ -1,14 +1,13 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/no-invalid-this.js

@@ -1,10 +1,9 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const noInvalidThisRule = new eslint.Linter().getRules().get("no-invalid-this");
 
-module.exports = ruleComposer.filterReports(noInvalidThisRule, problem => {
+export default ruleComposer.filterReports(noInvalidThisRule, problem => {
   let inClassProperty = false;
   let node = problem.node;
 

eslint/babel-eslint-plugin/src/rules/no-unused-expressions.js

@@ -1,7 +1,6 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const rule = new eslint.Linter().getRules().get("no-unused-expressions");
 
 /**
@@ -57,7 +56,7 @@ function isOptionalCallExpression(node) {
   );
 }
 
-module.exports = ruleComposer.filterReports(
+export default ruleComposer.filterReports(
   rule,
   problem =>
     !isInDoStatement(problem.node) && !isOptionalCallExpression(problem.node),

eslint/babel-eslint-plugin/src/rules/object-curly-spacing.js

@@ -1,12 +1,11 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const objectCurlySpacingRule = new eslint.Linter()
   .getRules()
   .get("object-curly-spacing");
 
-module.exports = ruleComposer.filterReports(
+export default ruleComposer.filterReports(
   objectCurlySpacingRule,
   (problem, metadata) => {
     const node = problem.node;

eslint/babel-eslint-plugin/src/rules/object-shorthand.js

@@ -1,7 +1,6 @@
-"use strict";
-
 let isWarnedForDeprecation = false;
-module.exports = {
+
+export default {
   meta: {
     deprecated: true,
     schema: [
@@ -10,9 +9,9 @@ module.exports = {
       },
     ],
   },
-  create: function() {
+  create() {
     return {
-      Program: function() {
+      Program() {
         if (
           isWarnedForDeprecation ||
           /=-(f|-format)=/.test(process.argv.join("="))

eslint/babel-eslint-plugin/src/rules/quotes.js

@@ -1,10 +1,9 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const quotesRule = new eslint.Linter().getRules().get("quotes");
 
-module.exports = ruleComposer.filterReports(quotesRule, problem => {
+export default ruleComposer.filterReports(quotesRule, problem => {
   // Workaround for JSX fragment syntax until
   // https://github.com/eslint/eslint/issues/9662
   if (problem.node.parent.type === "JSXFragment") {

eslint/babel-eslint-plugin/src/rules/semi.js

@@ -1,7 +1,6 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const semiRule = new eslint.Linter().getRules().get("semi");
 
 const OPT_OUT_PATTERN = /^[-[(/+`]/; // One of [(/+-`
@@ -104,7 +103,7 @@ const semiRuleWithClassProperty = ruleComposer.joinReports([
   }),
 ]);
 
-module.exports = ruleComposer.filterReports(
+export default ruleComposer.filterReports(
   semiRuleWithClassProperty,
   problem => {
     const node = problem.node;

eslint/babel-eslint-plugin/src/rules/valid-typeof.js

@@ -1,9 +1,8 @@
-"use strict";
+import ruleComposer from "eslint-rule-composer";
+import eslint from "eslint";
 
-const ruleComposer = require("eslint-rule-composer");
-const eslint = require("eslint");
 const validTypeOf = new eslint.Linter().getRules().get("valid-typeof");
 
-module.exports = ruleComposer.filterReports(validTypeOf, problem => {
+export default ruleComposer.filterReports(validTypeOf, problem => {
   return problem.node.value !== "bigint";
 });

eslint/babel-eslint-plugin/test/rules/camelcase.js

@@ -3,14 +3,12 @@
  * @author Nicholas C. Zakas
  */
 
-"use strict";
-
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const rule = require("../../src/rules/camelcase"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/camelcase";
+import RuleTester from "../helpers/RuleTester";
 
 //------------------------------------------------------------------------------
 // Tests

eslint/babel-eslint-plugin/test/rules/new-cap.js

@@ -3,10 +3,10 @@
  * @author Nicholas C. Zakas
  */
 
-var rule = require("../../src/rules/new-cap"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/new-cap";
+import RuleTester from "../helpers/RuleTester";
 
-var ruleTester = new RuleTester();
+const ruleTester = new RuleTester();
 ruleTester.run("babel/new-cap", rule, {
   valid: [
     // Original test cases.

eslint/babel-eslint-plugin/test/rules/no-invalid-this.js

@@ -3,15 +3,13 @@
  * @author Toru Nagashima
  */
 
-"use strict";
-
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const cloneDeep = require("lodash.clonedeep");
-const rule = require("../../src/rules/no-invalid-this"),
-  RuleTester = require("../helpers/RuleTester");
+import cloneDeep from "lodash.clonedeep";
+import rule from "../../src/rules/no-invalid-this";
+import RuleTester from "../helpers/RuleTester";
 
 //------------------------------------------------------------------------------
 // Helpers

eslint/babel-eslint-plugin/test/rules/no-unused-expressions.js

@@ -3,14 +3,12 @@
  * @author Michael Ficarra
  */
 
-"use strict";
-
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const rule = require("../../src/rules/no-unused-expressions"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/no-unused-expressions";
+import RuleTester from "../helpers/RuleTester";
 
 //------------------------------------------------------------------------------
 // Tests

eslint/babel-eslint-plugin/test/rules/object-curly-spacing.js

@@ -6,10 +6,10 @@
  * @copyright 2015 Mathieu M-Gosselin. All rights reserved.
  */
 
-var rule = require("../../src/rules/object-curly-spacing"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/object-curly-spacing";
+import RuleTester from "../helpers/RuleTester";
 
-var ruleTester = new RuleTester();
+const ruleTester = new RuleTester();
 ruleTester.run("babel/object-curly-spacing", rule, {
   valid: [
     // always - object literals

eslint/babel-eslint-plugin/test/rules/quotes.js

@@ -1,7 +1,7 @@
-var rule = require("../../src/rules/quotes"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/quotes";
+import RuleTester from "../helpers/RuleTester";
 
-var ruleTester = new RuleTester();
+const ruleTester = new RuleTester();
 ruleTester.run("babel/quotes", rule, {
   valid: [
     'var foo = "bar";',

eslint/babel-eslint-plugin/test/rules/semi.js

@@ -4,14 +4,12 @@
  * @author Nicholas C. Zakas
  */
 
-"use strict";
-
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const rule = require("../../src/rules/semi"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/semi";
+import RuleTester from "../helpers/RuleTester";
 
 const ruleTester = new RuleTester();
 

eslint/babel-eslint-plugin/test/rules/valid-typeof.js

@@ -3,14 +3,12 @@
  * @author Ian Christian Myers
  */
 
-"use strict";
-
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const rule = require("../../src/rules/valid-typeof"),
-  RuleTester = require("../helpers/RuleTester");
+import rule from "../../src/rules/valid-typeof";
+import RuleTester from "../helpers/RuleTester";
 
 //------------------------------------------------------------------------------
 // Tests