Object-isClassConstructor.js

Enable keyboard shortcuts

// Debugger.Object.prototype.isClassConstructor recognizes ES6 classes.

var g = newGlobal({ newCompartment: true });

var dbg = new Debugger();

var gDO = dbg.addDebuggee(g);

var hits = 0;

function checkIsClassConstructor(shouldBe, expr) {

  print(expr);

  assertEq(gDO.executeInGlobal(expr).return.isClassConstructor, shouldBe);

checkIsClassConstructor(true, "class MyClass{}; MyClass;");

checkIsClassConstructor(false, "class MyClass2{}; MyClass2.constructor;");

checkIsClassConstructor(

  false,

  "class MyClass3{}; Object.getPrototypeOf(MyClass3)"

);

checkIsClassConstructor(false, "(a) => { bleh; }");

checkIsClassConstructor(false, "(async function f () {})");

checkIsClassConstructor(void 0, "({})");