Variable setContainsAssertionConst

setContainsAssertion: AssertionFunctionSync<
    readonly [
        ZodUnion<
            [
                ZodCustom<Set<unknown>, Set<unknown>>,
                ZodCustom<WeakSet<WeakKey>, WeakSet<WeakKey>>,
            ],
        >,
        readonly ["to contain", "to include"],
        ZodUnknown,
    ],
    (
        subject: Set<unknown> | WeakSet<WeakKey>,
        value: unknown,
    ) =>
        | { actual?: undefined; expected?: undefined; message: string }
        | { actual: unknown; expected: string; message: string }
        | undefined,
    readonly [
        ZodUnion<
            [
                ZodCustom<Set<unknown>, Set<unknown>>,
                ZodCustom<WeakSet<WeakKey>, WeakSet<WeakKey>>,
            ],
        >,
        PhraseLiteralChoiceSlot<readonly ["to contain", "to include"]>,
        ZodUnknown,
    ],
> = ...

const set = new Set(['a', 'b']);
expect(set, 'to contain', 'a'); // passes

const obj = {};
const weakSet = new WeakSet([obj]);
expect(weakSet, 'to contain', obj); // passes
expect(weakSet, 'to contain', 'string'); // fails (not an object)
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