feat: add RelativeTimeFormat to Intl API

[sebastinez]

Purpose (TL;DR) - mandatory

PR #474 has introduced a mock for the intl API, and this has introduced a regression for me, where I'm not able to call Intl.RelativeTimeFormat.

Background (Problem in detail)

The problem showed in some of my test cases, once I updated fake-timers, when trying to use Intl.RelativeTimeFormat I got the following error: Intl.RelativeTimeFormat is not a constructor

Solution

The solution I opted for is to assign RelativeTimeFormat to the mocked Intl API with.

ClockIntl.RelativeTimeFormat = NativeIntl.RelativeTimeFormat;

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (fc312b9) 96.47% compared to head (d09e29c) 96.48%.

:exclamation: Current head d09e29c differs from pull request most recent head d4e78f2. Consider uploading reports for the commit d4e78f2 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #479 +/- ## ========================================== + Coverage 96.47% 96.48% +0.01% ========================================== Files 2 2 Lines 680 682 +2 ========================================== + Hits 656 658 +2 Misses 24 24 ``` | [Flag](https://app.codecov.io/gh/sinonjs/fake-timers/pull/479/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sinonjs) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/sinonjs/fake-timers/pull/479/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sinonjs) | `96.48% <100.00%> (+0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sinonjs#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/sinonjs/fake-timers/pull/479?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sinonjs) | Coverage Δ | | |---|---|---| | [src/fake-timers-src.js](https://app.codecov.io/gh/sinonjs/fake-timers/pull/479?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sinonjs#diff-c3JjL2Zha2UtdGltZXJzLXNyYy5qcw==) | `96.50% <100.00%> (+0.01%)` | :arrow_up: |

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[sebastinez]

Thanks for your reviews, what are the next steps? Do you need me to sign something or can the PR get merged?

[sebastinez]

Hey folks, this issue doesn't allow me to update fake-timers, since it would break my production. Is there work be done on a better solution? Or is anything holding this PR up?

[sebastinez]

Didn't want to close the PR, just comment on it

[fatso83]

Seems like you just need to implement your own suggestion that iterates over the props 🤩

PS. Nothing should ever prevent you from upgrading. Try the Npm package 'patch-package' next time ✌️

[SimenB]

Since there's no compilation step in this repo, you can also depend on your fork directly

[piotrpalek]

I'm getting the same issue, but with Intl.NumberFormat :( I think sinon would need to pick up the whole Intl API to fix this

edit: ok.. now I see this is actually doing that, so I probably need to wait for a release to happen?

[fatso83]

New version is out.

[piotrpalek]

Thanks! Sorry for hijacking this PR 😅