Variable equalWithinAssertionConst

equalWithinAssertion: AssertionFunctionSync<
    readonly [
        ZodUnion<
            readonly [
                ZodDate,
                ZodUnion<readonly [ZodISODateTime, ZodISODate]>,
                ZodNumber,
            ],
        >,
        "to equal",
        ZodUnion<
            readonly [
                ZodDate,
                ZodUnion<readonly [ZodISODateTime, ZodISODate]>,
                ZodNumber,
            ],
        >,
        "within",
        ZodCustomStringFormat<"duration">,
    ],
    (
        subject: string | number | Date,
        other: string | number | Date,
        toleranceStr: string,
    ) =>
        | { actual?: undefined; expected?: undefined; message: string }
        | {
            actual: { difference: number };
            expected: { maxDifference: number };
            message: string;
        }
        | undefined,
    readonly [
        ZodUnion<
            readonly [
                ZodDate,
                ZodUnion<readonly [ZodISODateTime, ZodISODate]>,
                ZodNumber,
            ],
        >,
        PhraseLiteralSlot<"to equal">,
        ZodUnion<
            readonly [
                ZodDate,
                ZodUnion<readonly [ZodISODateTime, ZodISODate]>,
                ZodNumber,
            ],
        >,
        PhraseLiteralSlot<"within">,
        ZodCustomStringFormat<"duration">,
    ],
> = ...

const date1 = new Date('2023-01-01T10:00:00.000Z');
const date2 = new Date('2023-01-01T10:00:00.500Z');
expect(date1, 'to equal', date2, 'within', '1 second'); // passes
expect(date1, 'to equal', date2, 'within', '100 milliseconds'); // fails
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