Variable weakMapAssertion`Const`

weakMapAssertion: AssertionStandardSchemaSync<
    readonly ["to be a WeakMap"],
    ZodCustom<WeakMap<WeakKey, unknown>, WeakMap<WeakKey, unknown>>,
    never,
> = ...

Asserts that the subject is a WeakMap instance.

Example

expect(new WeakMap(), 'to be a WeakMap'); // passes
expect(new Map(), 'to be a WeakMap'); // fails