perf: match ownKeys perf to the one of objectSpread (#10189)

babel · Jul 11, 2019 · 5d9a786 · 5d9a786
1 parent e88a569
commit 5d9a786
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Showing 7 changed files with 15 additions and 10 deletions.
diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
@@ -409,14 +409,19 @@ helpers.objectSpread = helper("7.0.0-beta.0")`
 helpers.objectSpread2 = helper("7.5.0")`
   import defineProperty from "defineProperty";
 
+  // This function is different to "Reflect.ownKeys". The enumerableOnly
+  // filters on symbol properties only. Returned string properties are always 
+  // enumerable. It is good to use in objectSpread.
+
   function ownKeys(object, enumerableOnly) {
     var keys = Object.keys(object);
     if (Object.getOwnPropertySymbols) {
-      keys.push.apply(keys, Object.getOwnPropertySymbols(object));
+      var symbols = Object.getOwnPropertySymbols(object);
+      if (enumerableOnly) symbols = symbols.filter(function (sym) {
+        return Object.getOwnPropertyDescriptor(object, sym).enumerable;
+      });
+      keys.push.apply(keys, symbols);
     }
-    if (enumerableOnly) keys = keys.filter(function (sym) {
-      return Object.getOwnPropertyDescriptor(object, sym).enumerable;
-    });
     return keys;
   }
 

diff --git a/...babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/assignment/output.js b/...babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/assignment/output.js
@@ -1,4 +1,4 @@
-function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { keys.push.apply(keys, Object.getOwnPropertySymbols(object)); } if (enumerableOnly) keys = keys.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); return keys; }
+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
 
 function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
 

diff --git a/...babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/output.js b/...babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/output.js
@@ -1,4 +1,4 @@
-function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { keys.push.apply(keys, Object.getOwnPropertySymbols(object)); } if (enumerableOnly) keys = keys.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); return keys; }
+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
 
 function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
 

diff --git a/...in-proposal-object-rest-spread/test/fixtures/object-spread/variable-declaration/output.js b/...in-proposal-object-rest-spread/test/fixtures/object-spread/variable-declaration/output.js
diff --git a/packages/babel-preset-env/test/fixtures/corejs2/entry-shippedProposals/output.js b/packages/babel-preset-env/test/fixtures/corejs2/entry-shippedProposals/output.js
@@ -296,7 +296,7 @@ require("core-js/modules/web.dom.iterable");
 
 require("regenerator-runtime/runtime");
 
-function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { keys.push.apply(keys, Object.getOwnPropertySymbols(object)); } if (enumerableOnly) keys = keys.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); return keys; }
+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
 
 function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
 

diff --git a/packages/babel-preset-env/test/fixtures/corejs2/usage-shippedProposals/output.js b/packages/babel-preset-env/test/fixtures/corejs2/usage-shippedProposals/output.js
@@ -28,7 +28,7 @@ require("core-js/modules/es6.promise");
 
 require("core-js/modules/es6.object.to-string");
 
-function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { keys.push.apply(keys, Object.getOwnPropertySymbols(object)); } if (enumerableOnly) keys = keys.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); return keys; }
+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
 
 function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
 

diff --git a/packages/babel-preset-env/test/fixtures/preset-options/shippedProposals/output.js b/packages/babel-preset-env/test/fixtures/preset-options/shippedProposals/output.js
@@ -1,4 +1,4 @@
-function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { keys.push.apply(keys, Object.getOwnPropertySymbols(object)); } if (enumerableOnly) keys = keys.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); return keys; }
+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
 
 function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }