Merge pull request jsx-eslint#1946 from alexzherdev/used-prop-types-refactoring

[Refactor] Extract used propTypes detection

Author: ljharb

lib/rules/boolean-prop-naming.js

@@ -4,7 +4,6 @@
  */
 'use strict';
 
-const has = require('has');
 const Components = require('../util/Components');
 const propsUtil = require('../util/props');
 const docsUrl = require('../util/docsUrl');
@@ -248,7 +247,7 @@ module.exports = {
             }
           }
 
-          if (!has(list, component) || (list[component].invalidProps || []).length) {
+          if (list[component].invalidProps && list[component].invalidProps.length > 0) {
             reportInvalidNaming(list[component]);
           }
         });

lib/rules/default-props-match-prop-types.js

@@ -5,7 +5,6 @@
  */
 'use strict';
 
-const has = require('has');
 const Components = require('../util/Components');
 const variableUtil = require('../util/variable');
 const annotations = require('../util/annotations');
@@ -595,11 +594,7 @@ module.exports = {
         stack = null;
         const list = components.list();
 
-        for (const component in list) {
-          if (!has(list, component)) {
-            continue;
-          }
-
+        Object.keys(list).forEach(component => {
           // If no defaultProps could be found, we don't report anything.
           if (!list[component].defaultProps) {
             return;
@@ -609,7 +604,7 @@ module.exports = {
             list[component].propTypes,
             list[component].defaultProps || {}
           );
-        }
+        });
       }
     };
   })

lib/rules/display-name.js

@@ -4,7 +4,6 @@
  */
 'use strict';
 
-const has = require('has');
 const Components = require('../util/Components');
 const astUtil = require('../util/ast');
 const docsUrl = require('../util/docsUrl');
@@ -216,12 +215,9 @@ module.exports = {
       'Program:exit': function() {
         const list = components.list();
         // Report missing display name for all components
-        for (const component in list) {
-          if (!has(list, component) || list[component].hasDisplayName) {
-            continue;
-          }
+        Object.keys(list).filter(component => !list[component].hasDisplayName).forEach(component => {
           reportMissingDisplayName(list[component]);
-        }
+        });
       }
     };
   })

lib/rules/no-multi-comp.js

@@ -4,7 +4,6 @@
  */
 'use strict';
 
-const has = require('has');
 const Components = require('../util/Components');
 const docsUrl = require('../util/docsUrl');
 
@@ -59,17 +58,15 @@ module.exports = {
         }
 
         const list = components.list();
-        let i = 0;
 
-        for (const component in list) {
-          if (!has(list, component) || isIgnored(list[component]) || ++i === 1) {
-            continue;
+        Object.keys(list).filter(component => !isIgnored(list[component])).forEach((component, i) => {
+          if (i >= 1) {
+            context.report({
+              node: list[component].node,
+              message: MULTI_COMP_MESSAGE
+            });
           }
-          context.report({
-            node: list[component].node,
-            message: MULTI_COMP_MESSAGE
-          });
-        }
+        });
       }
     };
   })

lib/rules/no-set-state.js

@@ -4,7 +4,6 @@
  */
 'use strict';
 
-const has = require('has');
 const Components = require('../util/Components');
 const docsUrl = require('../util/docsUrl');
 
@@ -74,12 +73,9 @@ module.exports = {
 
       'Program:exit': function() {
         const list = components.list();
-        for (const component in list) {
-          if (!has(list, component) || isValid(list[component])) {
-            continue;
-          }
+        Object.keys(list).filter(component => !isValid(list[component])).forEach(component => {
           reportSetStateUsages(list[component]);
-        }
+        });
       }
     };
   })