Variable objectSizeAssertionConst

objectSizeAssertion: AssertionFunctionSync<
    readonly [
        ZodRecord<
            ZodUnion<readonly [ZodString, ZodNumber, ZodSymbol]>,
            ZodUnknown,
        >,
        "to have size",
        ZodInt,
    ],
    (
        subject: Record<string | number | symbol, unknown>,
        expectedSize: number,
    ) => { actual: number; expected: number; message: string } | undefined,
    readonly [
        ZodRecord<
            ZodUnion<readonly [ZodString, ZodNumber, ZodSymbol]>,
            ZodUnknown,
        >,
        PhraseLiteralSlot<"to have size">,
        ZodInt,
    ],
> = ...

expect({ a: 1, b: 2 }, 'to have size', 2); // passes
expect({ a: 1 }, 'to have size', 2); // fails
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