@babel/plugin-transform-destructuring - npm Package Compare versions

Comparing version 7.4.0 to 7.4.3

lib/index.js

@@ -65,2 +65,12 @@ "use strict";
 
+  function hasObjectRest(pattern) {
+    for (const elem of pattern.properties) {
+      if (_core().types.isRestElement(elem)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
   const STOP_TRAVERSAL = {};
@@ -97,3 +107,3 @@
       if (op) {
-        node = _core().types.expressionStatement(_core().types.assignmentExpression(op, id, _core().types.cloneNode(init)));
+        node = _core().types.expressionStatement(_core().types.assignmentExpression(op, id, _core().types.cloneNode(init) || this.scope.buildUndefinedNode()));
       } else {
@@ -225,2 +235,31 @@ node = _core().types.variableDeclaration(this.kind, [_core().types.variableDeclarator(id, _core().types.cloneNode(init))]);
 
+      if (hasObjectRest(pattern)) {
+        let copiedPattern;
+
+        for (let i = 0; i < pattern.properties.length; i++) {
+          const prop = pattern.properties[i];
+
+          if (_core().types.isRestElement(prop)) {
+            break;
+          }
+
+          const key = prop.key;
+
+          if (prop.computed && !this.scope.isPure(key)) {
+            const name = this.scope.generateUidIdentifierBasedOnNode(key);
+            this.nodes.push(this.buildVariableDeclaration(name, key));
+
+            if (!copiedPattern) {
+              copiedPattern = pattern = Object.assign({}, pattern, {
+                properties: pattern.properties.slice()
+              });
+            }
+
+            copiedPattern.properties[i] = Object.assign({}, copiedPattern.properties[i], {
+              key: name
+            });
+          }
+        }
+      }
+
       for (let i = 0; i < pattern.properties.length; i++) {
@@ -227,0 +266,0 @@ const prop = pattern.properties[i];

package.json

 {
   "name": "@babel/plugin-transform-destructuring",
-  "version": "7.4.0",
+  "version": "7.4.3",
   "description": "Compile ES2015 destructuring to ES5",
@@ -21,6 +21,6 @@ "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-destructuring",
   "devDependencies": {
-    "@babel/core": "^7.4.0",
+    "@babel/core": "^7.4.3",
     "@babel/helper-plugin-test-runner": "^7.0.0"
   },
-  "gitHead": "f1328fb913b5a93d54dfc6e3728b1f56c8f4a804"
+  "gitHead": "508fde4009f31883f318b9e6546459ac1b086a91"
 }

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Improved metrics

Total package byte prevSize

19706

increased by5.74%

Lines of code

456

increased by7.04%

No dependency changes