[Refactor] utils/Components: correct spelling and delete unused code

Author: ohhoney1

CHANGELOG.md

@@ -15,7 +15,9 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 
 ### Changed
 * [Docs] [`jsx-no-bind`]: updates discussion of refs ([#2998][] @dimitropoulos)
+* [Refactor] `utils/Components`: correct spelling and delete unused code ([#3026][] @ohhoney1)
 
+[#3026]: https://github.com/yannickcr/eslint-plugin-react/pull/3026
 [#3016]: https://github.com/yannickcr/eslint-plugin-react/issues/3016
 [#3006]: https://github.com/yannickcr/eslint-plugin-react/pull/3006
 [#3001]: https://github.com/yannickcr/eslint-plugin-react/pull/3001

lib/util/Components.js

@@ -36,12 +36,9 @@ function usedPropTypesAreEquivalent(propA, propB) {
 }
 
 function mergeUsedPropTypes(propsList, newPropsList) {
-  const propsToAdd = [];
-  newPropsList.forEach((newProp) => {
-    const newPropisAlreadyInTheList = propsList.some((prop) => usedPropTypesAreEquivalent(prop, newProp));
-    if (!newPropisAlreadyInTheList) {
-      propsToAdd.push(newProp);
-    }
+  const propsToAdd = newPropsList.filter((newProp) => {
+    const newPropIsAlreadyInTheList = propsList.some((prop) => usedPropTypesAreEquivalent(prop, newProp));
+    return !newPropIsAlreadyInTheList;
   });
 
   return propsList.concat(propsToAdd);
@@ -412,30 +409,6 @@ function componentRule(rule, context) {
       return node.type === 'MemberExpression' && node.object.type === 'ThisExpression' && node.property.name === 'state';
     },
 
-    getReturnPropertyAndNode(ASTnode) {
-      let property;
-      let node = ASTnode;
-      switch (node.type) {
-        case 'ReturnStatement':
-          property = 'argument';
-          break;
-        case 'ArrowFunctionExpression':
-          property = 'body';
-          if (node[property] && node[property].type === 'BlockStatement') {
-            node = utils.findReturnStatement(node);
-            property = 'argument';
-          }
-          break;
-        default:
-          node = utils.findReturnStatement(node);
-          property = 'argument';
-      }
-      return {
-        node,
-        property
-      };
-    },
-
     isReturningJSX(ASTNode, strict) {
       return jsxUtil.isReturningJSX(this.isCreateElement.bind(this), ASTNode, strict, true);
     },
@@ -552,9 +525,9 @@ function componentRule(rule, context) {
     },
 
     /**
-     * Find a return statment in the current node
+     * Find a return statement in the current node
      *
-     * @param {ASTNode} ASTnode The AST node being checked
+     * @param {ASTNode} node The AST node being checked
      */
     findReturnStatement: astUtil.findReturnStatement,
 

package.json

@@ -51,7 +51,7 @@
     "babel-eslint": "^8.2.6",
     "eslint": "^3 || ^4 || ^5 || ^6 || ^7",
     "eslint-config-airbnb-base": "^14.2.1",
-    "eslint-plugin-eslint-plugin": "^3.1.0",
+    "eslint-plugin-eslint-plugin": "^2.3.0 || ^3.3.1",
     "eslint-plugin-import": "^2.23.4",
     "espree": "^3.5.4",
     "istanbul": "^0.4.5",