Adding a custom matcher for Date

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Hi Earl team, I have been trying to add a custom matcher for Date comparison, please refer to the example below:

expect(result.documents[0]).toEqual({
category: "cartoon",
publishedDate : "2024-10-09T01:15:04.747Z"
})

This test fails expectedly as publishedDate is a Date type and trying to compare it to a string value,
although I am looking for an exact match on date, I tried (publishedDate : expect.a.(Date)) assertion as well, but that didn't seem to work.
I have have gone through Earl's documentation and tried to add a custom matcher for Date, but that doesn't seem to work either.
Can someone please suggest what's the best way for matching dates in a json using Matchers.

Thanks,
Shrey

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Just to add that I am happy to submit a PR for Date matcher, if someone could help in getting to it work.