Remove support for hsv, hwb, ansi and css keyword colors and add .rgbToAnsi256(), .hexToRgb() and .hexToAnsi256()

[Richienb]

Remove color-convert in favour of rgb, hex and ansi256 formats and add .rgbToAnsi256(), .hexToRgb() and .hexToAnsi256().

Related to chalk/chalk#300

[Qix-]

Let's confirm the gameplan before merging this, but this looks like an OK start. I will have some requests about the API though since this is going to be a breaking change anyway - namely that we probably shouldn't follow the from_module.to_model() design anymore and come up with something a bit more ergonomic.

[sindresorhus]

The PR title should reflect the user-facing changes, not an internal implementation detail.

[sindresorhus]

I will have some requests about the API though since this is going to be a breaking change anyway - namely that we probably shouldn't follow the from_module.to_model() design anymore and come up with something a bit more ergonomic.

What do you have in mind?

[Qix-]

What do you have in mind?

In tight loops the double object lookup could add overhead. We could get away with simpler conversion functions at the flat level, e.g. ansi256toTruecolor().

Also, we don't need ansi2ansi anymore, for example - those were just API fillers if I recall.

[sindresorhus]

In tight loops the double object lookup could add overhead. We could get away with simpler conversion functions at the flat level, e.g. ansi256toTruecolor().

👍🏻

[Richienb]

We should drop support for Node.js 8 because it doesn't support named regex capture groups.

[Qix-]

Sure; node 8 is EOL so that's fine.

[Richienb]

The build is now failing because tsd uses Typescript 3.9 whereas labelled tuple elements were added in Typescript 4.0.

[sindresorhus]

That's ok. A new tsd version will be out in a couple of days.

[sindresorhus]

Thanks for working on this 🙌🏻

[sindresorhus]

Released: https://github.com/chalk/ansi-styles/releases/tag/v5.0.0