feat: support new.target in class

axetroy · Mar 29, 2018 · dc76edb · dc76edb
1 parent 731ddcd
commit dc76edb
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Showing 2 changed files with 30 additions and 0 deletions.
diff --git a/src/evaluate.ts b/src/evaluate.ts
@@ -1243,6 +1243,10 @@ const visitors: EvaluateMap = {
             classScope.const("this", this);
           }
 
+          classScope.const("new", {
+            target: ClassConstructor
+          });
+
           for (const n of constructor.body.body) {
             evaluate(
               path.createChild(n, classScope, {

diff --git a/test/es2015/class/new.target.test.ts b/test/es2015/class/new.target.test.ts
@@ -0,0 +1,26 @@
+import test from "ava";
+import vm from "../../../src/vm";
+
+test("new target with new", t => {
+  const sandbox: any = vm.createContext({});
+
+  const { Person, target } = vm.runInContext(
+    `
+var target;
+
+class Person{
+  constructor(){
+    target = new.target;
+  }
+}
+
+new Person();
+
+module.exports = {target: target, Person: Person};
+  `,
+    sandbox
+  );
+
+  t.true(target === Person);
+  t.deepEqual(target.name, "Person");
+});