v5.0.0-alpha.0

[keithamus]

This release is the first alpha release for Chai 5. The changes from v4.x:

• This package now uses ESM modules. CommonJS environments are no longer supported. If you wish to use a CommonJS environment, please continue to use Chai 4.
• Drop support for NodeJS versions less than 16. If you are using NodeJS v4-v15, please continue to use Chai 4.
• Drop support for Internet Explorer 10 & 11. If you wish to test against Internet Explorer 10 or 11 please continue to use Chai 4.
• Drop support for Safari versions less than 14. If you wish to test against Safari v10-v13 please continue to use Chai 4.
• Drop support for EdgeHTML. If you wish to test against Edges older than 18 (as in, not Chromium Edge) please continue to use Chai 4.
• Drop support for Firefox versions less than 102. If you wish to test against Firefox 60 through to 101 please continue to use Chai 4.
• Drop support for Chrome versions less than 108. If you wish to test against Chrome 68 through 107 please continue to use Chai 4.

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This discussion was created from the release v5.0.0-alpha.0.

[koddsson]

I made a draft PR to modernweb-dev/web with chai@next and it's working great! I'm happy to drop @esm-bundle/chai in favour of chai 🎉

I figured I'd keep the draft PR until the version is out of prerelease 👍🏻

[koddsson]

Yo yo yo; I've created stacked PRs that 1. Remove Karma in favour of Web Test Runner (chaijs/deep-eql#94), 2. Convert the project to an ES Module (koddsson/deep-eql#1) and then a bit of 3 refactoring (koddsson/deep-eql#2)

Let me know what you think. I made a bunch of assumptions which may be wrong, so just comment on the PRs and I'll make those changes.

[koddsson]

Looks like assertion-error is already ESM and TypeScript.

https://github.com/chaijs/assertion-error/blob/08a1f16ece0c5d4b916c9ce1479a776df0e203e0/package.json#L21

[koddsson]

Tracking it here (I'll update the comment as we make progress on this).

Project	ESM	TypeScript	Updated in chai@v5 branch
deep-eql	✅	❌	✅
check-error	✅	❌	✅
assertion-error	✅	✅	❌
pathval	✅	❌	✅
loupe	✅	✅	✅

[Westbrook]

Any progress on this?

[koddsson]

Yup! I've been working on this lately. deep-eql is updated in the chai@v5 branch, there's a PR open for assertion-error and we're finalising the loupe migration to ESM.

[voxpelli]

CommonJS environments are no longer supported. If you wish to use a CommonJS environment, please continue to use Chai 4

CJS is still supported in Chai 5 if imported through const chai = await import('chai'), right?

[keithamus]

Hopefully so. Our main goal will be to ensure that import chai from 'chai' will work.