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Jordan Pittman af15e1bdc0
Add support for important in v4 (#14448)
This PR allows modifying utility output by wrapping all utility
declarations in a custom selector or marking all utility declarations as
`!important`. This is the v4 equivalent to the `important` option in the
`tailwind.config.js` file.

## Mark all utility declarations as `!important`

To add `!important` to all utility declarations, you add an `important`
flag after the `@import` statement for `tailwindcss` or
`tailwindcss/utilities`:

```css
/** Importing `tailwindcss` */
@import "tailwindcss" important;

/** Importing the utilities directly */
@import "tailwindcss/utilities" important;
```

Example utility output:

```css
.mx-auto {
  margin-left: auto !important;
  margin-right: auto !important;
}

.text-center {
  text-align: center !important;
}
```

This is equivalent to adding `important: true` to the
`tailwind.config.js` file — which is still supported for backwards
compatibility.

## Wrap all utility declarations in a custom selector

To nest all utilities in an `#app` selector you add `selector(#app)`
flag after the `@import` statement for `tailwindcss` or
`tailwindcss/utilities`:

```css
/** Importing `tailwindcss` */
@import "tailwindcss" selector(#app);

/** Importing the utilities directly */
@import "tailwindcss/utilities" selector(#app);
```

Example utility output:

```css
.mx-auto {
  #app & {
    margin-left: auto;
    margin-right: auto;
  }
}

.text-center {
  #app & {
    text-align: center;
  }
}
```

This is equivalent to adding `important: "#app"` to the
`tailwind.config.js` file — which is still supported for backwards
compatibility.

**This _does not_ bring back support for the `respectImportant` flag in
`addUtilities` / `matchUtilities`.**
2024-10-03 16:25:11 +02:00
.github Only run Ubuntu tests on feature branches (#14560) 2024-10-01 13:45:52 +02:00
crates Improve @tailwindcss/postcss performance for initial builds (#14565) 2024-10-03 16:21:54 +02:00
integrations Improve @tailwindcss/postcss performance for initial builds (#14565) 2024-10-03 16:21:54 +02:00
packages Add support for important in v4 (#14448) 2024-10-03 16:25:11 +02:00
patches Add standalone CLI (#14270) 2024-09-02 15:23:46 +02:00
playgrounds Update @types/react 18.3.3 → 18.3.9 (patch) (#14532) 2024-09-26 22:02:44 +02:00
scripts Add GitHub release workflow (#14346) 2024-09-05 09:45:29 -04:00
.gitattributes Add .gitattributes and define a merge strategy for changelog files 2024-08-26 16:27:41 +02:00
.gitignore Add test.debug to integration tests (#14133) 2024-08-08 12:02:19 +02:00
.npmrc introduce v4 codebase 2024-03-05 14:29:15 +01:00
.prettierignore Hoist oxide/crates to just crates (#13333) 2024-03-23 09:00:48 -04:00
Cargo.lock Improve @tailwindcss/postcss performance for initial builds (#14565) 2024-10-03 16:21:54 +02:00
Cargo.toml Hoist oxide/crates to just crates (#13333) 2024-03-23 09:00:48 -04:00
CHANGELOG.md Add support for important in v4 (#14448) 2024-10-03 16:25:11 +02:00
LICENSE Add README, LICENSE, and CONTRIBUTING (#13088) 2024-03-05 14:45:39 -05:00
package.json Update postcss 8.4.41 → 8.4.47 (patch) (#14581) 2024-10-03 11:15:18 +02:00
pnpm-lock.yaml Improve @tailwindcss/postcss performance for initial builds (#14565) 2024-10-03 16:21:54 +02:00
pnpm-workspace.yaml Bump dependencies (#14160) 2024-08-09 16:12:24 +02:00
README.md Copy README file to every package (#13096) 2024-03-06 08:49:31 -05:00
turbo.json Fix Rust build by passing through RUSTUP_HOME variable (#14171) 2024-08-12 11:37:45 +02:00
vitest.workspace.ts introduce v4 codebase 2024-03-05 14:29:15 +01:00

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