Closed Bug 1180294 Opened 10 years ago Closed 10 years ago

Map/Set/WeakMap/WeakSet should throw a TypeError when called without a new target

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1083752

People

(Reporter: leonardo.balter, Unassigned)

Details

If Map/Set/WeakMap/WeakSet are called without a new target they should throw a TypeError. Currently it's possible to call directly: - Map() - Set() - WeakMap() - ~WeakSet()~ // currently not implemented on my SpiderMonkey build (JavaScript-C42.0a1) They need to have a new target when called in order to not throw a TypeError: - new Map() - new Set() - ... Refs: - 23.1.1.1 item 1 - 23.2.1.1 item 1 - 23.3.1.1 item 1 - 23.4.1.1 item 1
WeakSet() already throws.
Status: UNCONFIRMED → RESOLVED
Closed: 10 years ago
Resolution: --- → DUPLICATE
WeakSet() throws only because it's not even a function yet. It should throw (when it's implemented) because a new target is not defined. Current error: `TypeError: WeakSet is not a function` The other bug didn't have any reference to Map, WeakMap and WeakSet. I added a comment there to not let the issue persist on the other collections Objects.
Thanks for reporting. I changed the bug summary of the other bug before duping though. You might be confused by the weird error message for WeakSet(). new WeakSet already works.
> new WeakSet already works. oops, that was my bad. It works for sure. I didn't notice the change on the bug summary before. Thanks!
No worries. Thanks again for helping out.
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