LibJS: Implement basic support for the "new" keyword

NewExpression mostly piggybacks on the existing CallExpression. The big
difference is that "new" creates a new Object and passes it as |this|
to the callee.

1 files changed, 7 insertions, 0 deletions

diff --git a/Libraries/LibJS/Tests/constructor-basic.js b/Libraries/LibJS/Tests/constructor-basic.js
new file mode 100644
index 0000000000..9e2e1233ea
--- /dev/null
+++ b/Libraries/LibJS/Tests/constructor-basic.js
@@ -0,0 +1,7 @@
+function Foo() {
+    this.x = 123;
+}
+
+var foo = new Foo();
+if (foo.x === 123)
+    console.log("PASS");