Fix evaluation order with object spread (#11412)

* Fix object spread runtime semantics * limit this deoptimization * optimize empty objects * declare variables
2020-04-24 05:59:35 +08:00
parent 5f299bab18
commit af669297ef
12 changed files with 144 additions and 1 deletions
--- a/packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/input.js
+++ b/packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/input.js
@@ -1,3 +1,10 @@
+var a;
+var b;
+var c;
+var d;
+var x;
+var y;
+
 ({ x, ...y, a, ...b, c });

 ({ ...Object.prototype });