Bug: `use-baseline` reports `linear-gradient` and `radial-gradient` as not being widely available

[jimmy-zhening-luo]

Environment

ESLint version: 9.26.0
@eslint/css version: 0.8.0
Node version: 22.15.1
npm version: 11.4.0
Operating System: Ubuntu & Windows 11 Pro

Which language are you using?

stylesheet

What did you do?

Configuration

import { defineConfig } from "eslint/config";
import css from "@eslint/css";

export default defineConfig([
	// lint CSS files
	{
		files: ["**/*.css"],
		language: "css/css",
		plugins: { css },
		extends: ["css/recommended"],
	},

	// your other configs here
]);

body {
  background-size: 100vi 100vb;
  background-image:
    linear-gradient(180deg,
      var(--color-bg-0) 0%,
      var(--color-bg-1) 15%,
      var(--color-bg-2) 50%) /* should be OK, but errors */;
    radial-gradient(50% 50% at 50% 50%,
      rgba(255, 255, 255, 0.75) 0%,
      rgba(255, 255, 255, 0) 100%) /* should be OK, but errors */,
}

What did you expect to happen?

I expected the above code to not produce any error.

Reasoning

linear-gradient and radial-gradient are considered widely-available by mdn, with few exceptions noted here and here.

What actually happened?

Received the following errors (with screenshot):

Type 'linear-gradient' is not a widely available baseline feature.eslintcss/use-baseline

Type 'radial-gradient' is not a widely available baseline feature.eslintcss/use-baseline

Link to Minimal Reproducible Example

Please use the exact config and exact code above for minimum repo

Participation

• I am willing to submit a pull request for this issue.

Additional comments

No response

[nzakas]

Thanks for the report. It looks like this data is incorrect in the web-features package. When we did the last update, it reset these functions to a lower baseline status:
https://github.com/eslint/css/pull/130/files#diff-79efeb98f6abe2af697f58bc91d99598dc2dea465ac51f519abce5795ef94606L597-L600

@rviscomi can you confirm?

[nzakas]

Looks like a couple other gradient-related types also got caught in this update:
https://github.com/eslint/css/pull/130/files#diff-79efeb98f6abe2af697f58bc91d99598dc2dea465ac51f519abce5795ef94606L575-L576

[rviscomi]

Looks like a bug in the types regex. I have a fix in #137.