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LibJS: Define the "constructor" property on ScriptFunction's prototype

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and set it to the current function
This commit is contained in:
Jack Karamanian 2020-06-08 13:24:15 -05:00 • committed by Andreas Kling
parent f833362536
commit 949bffdc93
Notes: sideshowbarker 2024-07-19 05:19:38 +09:00
2 changed files with 21 additions and 8 deletions
Libraries/LibJS
Runtime
ScriptFunction.cpp
Tests
constructor-basic.js

7
Libraries/LibJS/Runtime/ScriptFunction.cpp
View file

@ -66,8 +66,11 @@ ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& nam
void ScriptFunction::initialize(Interpreter& interpreter, GlobalObject& global_object)
{
Function::initialize(interpreter, global_object);
if (!m_is_arrow_function)
define_property("prototype", Object::create_empty(interpreter, global_object), 0);
if (!is_arrow_function) {
Object* prototype = Object::create_empty(interpreter(), interpreter().global_object());
prototype->define_property("constructor", this, Attribute::Writable | Attribute::Configurable);
define_property("prototype", prototype, 0);
}
define_native_property("length", length_getter, nullptr, Attribute::Configurable);
define_native_property("name", name_getter, nullptr, Attribute::Configurable);
}

22
Libraries/LibJS/Tests/constructor-basic.js
View file

@ -1,7 +1,17 @@
function Foo() {
this.x = 123;
}
load("test-common.js");
var foo = new Foo();
if (foo.x === 123)
console.log("PASS");
try {
function Foo() {
this.x = 123;
}
assert(Foo.prototype.constructor === Foo);
var foo = new Foo();
assert(foo.constructor === Foo);
assert(foo.x === 123);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}