Reflect.set throws when the receiver is null or undefined

[d01c2]

Reproduction

Reflect.set({}, "x", 1, null);

Expected

false is returned.

V8 (15.6.20):

d8> Reflect.set({}, "x", 1, null);
false

Actual (QuickJS-ng)

QuickJS-ng throws instead of returning a Boolean:

qjs > Reflect.set({}, "x", 1, null);
TypeError: cannot set property 'x' of null

Spec

Reflect.set forwards to the target's [[Set]] with the given receiver. For a data property, OrdinarySetWithOwnDescriptor reaches the step "If receiver is not an Object, return false", so an assignment through a receiver that cannot hold properties is reported as a failed assignment rather than an error.

Only null and undefined are affected: Reflect.set({}, "x", 1, 5) returns false in QuickJS-ng. The target does not matter, since a typed array throws in the same way.

Versions

• QuickJS-ng: 0.17.0
• V8: 15.6.20