V2

We noticed an issue that happened when handling relative file imports in
the `@plugin` and the upcoming `@content` APIs. The problem arises from
relative files that are inside `@import`ed stylesheets. Take, for
example, the following folder structure:

```css
/* src/index.css */
@import "./dir/index.css";
```
```css
/* src/dir/index.css */
@plugin "../../plugin.ts";
```

It's expected that the path is relative to the CSS file that defined it.
However, right now, we use
[`postcss-import`](https://github.com/postcss/postcss-import) to flatten
the CSS file before running the tailwind build step. This causes these
custom-properties to be inlined in a flat file which removes the
information of which file is being referred:

```css
/* src/flat.css */
@plugin "../../plugin.ts"; /* <- This is now pointing to the wrong file */
```

There are generally two approaches that we can do to solve this:

1. **Handle `@import` flattening inside tailwindcss:** While generally
this would give us more freedom and less dependencies, this would
require some work to get all edge cases right. We need to support
layers/conditional imports and also handle all relative urls for
properties like `background-image`.
2. **Rewrite relative paths as a separate postcss visitor:** The
approach this PR takes is instead to implement a custom postcss plugin
that uses the AST to rewrite relative references inside `@plugin` and
`@content`. This has the benefit of requiring little changes to our
existing APIs. The rule is only enabled for relative references inside
`@plugin` and `@content`, so the surface of this rule is very small.

We can use this plugin inside all three current clients:

- `@tailwindcss/postcss` obviously already uses postcss
- `@tailwindcss/cli` also uses postcss to handle `@import` flattening
- `@tailwindcss/vite` allows us to add custom postcss rules via the CSS
pipeline. There are a few cases that we handle with care (e.g. in vite
you can pass a string to the postcss config which is supposed to load
the config from a file).

To validate the changes, we have added both a list of unit test cases to
the plugin itself as well as verified that all three clients are working
as expected:

- `@tailwindcss/postcss` now has an explicit test for this behavior
- `@tailwindcss/cli` and `@tailwindcss/vite` were manually tested by
updating the vite playground. The CLI was run with `--cwd
playgrounds/vite/ -i ./src/app.css -o foo.css`:
<img width="531" alt="Screenshot 2024-07-29 at 11 35 59"
src="https://github.com/user-attachments/assets/78f0acdc-a46c-4c6c-917a-2916417b1001">

packages/@tailwindcss-cli/package.json

@@ -12,7 +12,7 @@
   "homepage": "https://tailwindcss.com",
   "scripts": {
     "lint": "tsc --noEmit",
-    "build": "tsup-node ./src/index.ts --format esm --minify --clean",
+    "build": "tsup-node",
     "dev": "pnpm run build -- --watch"
   },
   "bin": {
@@ -36,7 +36,8 @@
     "picocolors": "^1.0.1",
     "postcss": "8.4.24",
     "postcss-import": "^16.1.0",
-    "tailwindcss": "workspace:^"
+    "tailwindcss": "workspace:^",
+    "internal-postcss-fix-relative-paths": "workspace:^"
   },
   "devDependencies": {
     "@types/postcss-import": "^14.0.3"

packages/@tailwindcss-cli/src/commands/build/index.ts

@@ -1,5 +1,6 @@
 import watcher from '@parcel/watcher'
 import { IO, Parsing, scanDir, scanFiles, type ChangedContent } from '@tailwindcss/oxide'
+import fixRelativePathsPlugin from 'internal-postcss-fix-relative-paths'
 import { Features, transform } from 'lightningcss'
 import { existsSync } from 'node:fs'
 import fs from 'node:fs/promises'
@@ -259,6 +260,7 @@ function handleImports(
 
   return postcss()
     .use(atImport())
+    .use(fixRelativePathsPlugin())
     .process(input, { from: file })
     .then((result) => [
       result.css,

packages/@tailwindcss-cli/tsup.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  format: ['esm'],
+  clean: true,
+  minify: true,
+  entry: ['src/index.ts'],
+  noExternal: ['internal-postcss-fix-relative-paths'],
+})

packages/@tailwindcss-postcss/package.json

@@ -12,7 +12,7 @@
   "homepage": "https://tailwindcss.com",
   "scripts": {
     "lint": "tsc --noEmit",
-    "build": "tsup-node ./src/index.ts --format cjs,esm --dts --cjsInterop --splitting --minify --clean",
+    "build": "tsup-node",
     "dev": "pnpm run build -- --watch"
   },
   "files": [
@@ -33,7 +33,8 @@
     "@tailwindcss/oxide": "workspace:^",
     "lightningcss": "^1.25.1",
     "postcss-import": "^16.1.0",
-    "tailwindcss": "workspace:^"
+    "tailwindcss": "workspace:^",
+    "internal-postcss-fix-relative-paths": "workspace:^"
   },
   "devDependencies": {
     "@types/node": "^20.12.12",

packages/@tailwindcss-postcss/src/fixtures/example-project/src/relative-import.css

@@ -0,0 +1 @@
+@plugin '../plugin.js';

packages/@tailwindcss-postcss/src/index.test.ts

@@ -144,7 +144,7 @@ describe('plugins', () => {
     let result = await processor.process(
       css`
         @import 'tailwindcss/utilities';
-        @plugin 'internal-example-plugin';
+        @plugin './plugin.js';
       `,
       { from: INPUT_CSS_PATH },
     )
@@ -166,6 +166,36 @@ describe('plugins', () => {
     `)
   })
 
+  test('local CJS plugin from `@import`-ed file', async () => {
+    let processor = postcss([
+      tailwindcss({ base: `${__dirname}/fixtures/example-project`, optimize: { minify: false } }),
+    ])
+
+    let result = await processor.process(
+      css`
+        @import 'tailwindcss/utilities';
+        @import '../example-project/src/relative-import.css';
+      `,
+      { from: `${__dirname}/fixtures/another-project/input.css` },
+    )
+
+    expect(result.css.trim()).toMatchInlineSnapshot(`
+      ".underline {
+        text-decoration-line: underline;
+      }
+
+      @media (inverted-colors: inverted) {
+        .inverted\\:flex {
+          display: flex;
+        }
+      }
+
+      .hocus\\:underline:focus, .hocus\\:underline:hover {
+        text-decoration-line: underline;
+      }"
+    `)
+  })
+
   test('published CJS plugin', async () => {
     let processor = postcss([
       tailwindcss({ base: `${__dirname}/fixtures/example-project`, optimize: { minify: false } }),

packages/@tailwindcss-postcss/src/index.ts

@@ -2,9 +2,10 @@ import { scanDir } from '@tailwindcss/oxide'
 import fs from 'fs'
 import { Features, transform } from 'lightningcss'
 import path from 'path'
-import postcss, { type AcceptedPlugin, type PluginCreator } from 'postcss'
+import postcss, { AtRule, type AcceptedPlugin, type PluginCreator } from 'postcss'
 import postcssImport from 'postcss-import'
 import { compile } from 'tailwindcss'
+import fixRelativePathsPlugin from '../../internal-postcss-fix-relative-paths/src'
 
 /**
  * A Map that can generate default values for keys that don't exist.
@@ -48,114 +49,118 @@ function tailwindcss(opts: PluginOptions = {}): AcceptedPlugin {
     }
   })
 
+  let hasApply: boolean, hasTailwind: boolean
+
   return {
     postcssPlugin: '@tailwindcss/postcss',
     plugins: [
       // We need to run `postcss-import` first to handle `@import` rules.
       postcssImport(),
+      fixRelativePathsPlugin(),
 
-      (root, result) => {
-        let inputFile = result.opts.from ?? ''
-        let context = cache.get(inputFile)
-
-        let rebuildStrategy: 'full' | 'incremental' = 'incremental'
-
-        // Track file modification times to CSS files
-        {
-          let files = result.messages.flatMap((message) => {
-            if (message.type !== 'dependency') return []
-            return message.file
-          })
-          files.push(inputFile)
-          for (let file of files) {
-            let changedTime = fs.statSync(file, { throwIfNoEntry: false })?.mtimeMs ?? null
-            if (changedTime === null) {
-              if (file === inputFile) {
-                rebuildStrategy = 'full'
-              }
-              continue
-            }
-
-            let prevTime = context.mtimes.get(file)
-            if (prevTime === changedTime) continue
-
-            rebuildStrategy = 'full'
-            context.mtimes.set(file, changedTime)
-          }
-        }
-
-        let hasApply = false
-        let hasTailwind = false
-
-        root.walkAtRules((rule) => {
+      {
+        postcssPlugin: 'tailwindcss',
+        Once() {
+          // Reset some state between builds
+          hasApply = false
+          hasTailwind = false
+        },
+        AtRule(rule: AtRule) {
           if (rule.name === 'apply') {
             hasApply = true
           } else if (rule.name === 'tailwind') {
             hasApply = true
             hasTailwind = true
-            // If we've found `@tailwind` then we already
-            // know we have to run a "full" build
-            return false
           }
-        })
+        },
+        OnceExit(root, { result }) {
+          let inputFile = result.opts.from ?? ''
+          let context = cache.get(inputFile)
 
-        // Do nothing if neither `@tailwind` nor `@apply` is used
-        if (!hasTailwind && !hasApply) return
+          let rebuildStrategy: 'full' | 'incremental' = 'incremental'
 
-        let css = ''
-
-        // Look for candidates used to generate the CSS
-        let { candidates, files, globs } = scanDir({ base, globs: true })
-
-        // Add all found files as direct dependencies
-        for (let file of files) {
-          result.messages.push({
-            type: 'dependency',
-            plugin: '@tailwindcss/postcss',
-            file,
-            parent: result.opts.from,
-          })
-        }
-
-        // Register dependencies so changes in `base` cause a rebuild while
-        // giving tools like Vite or Parcel a glob that can be used to limit
-        // the files that cause a rebuild to only those that match it.
-        for (let { base, glob } of globs) {
-          result.messages.push({
-            type: 'dir-dependency',
-            plugin: '@tailwindcss/postcss',
-            dir: base,
-            glob,
-            parent: result.opts.from,
-          })
-        }
-
-        if (rebuildStrategy === 'full') {
-          let basePath = path.dirname(path.resolve(inputFile))
-          let { build } = compile(root.toString(), {
-            loadPlugin: (pluginPath) => {
-              if (pluginPath[0] === '.') {
-                return require(path.resolve(basePath, pluginPath))
+          // Track file modification times to CSS files
+          {
+            let files = result.messages.flatMap((message) => {
+              if (message.type !== 'dependency') return []
+              return message.file
+            })
+            files.push(inputFile)
+            for (let file of files) {
+              let changedTime = fs.statSync(file, { throwIfNoEntry: false })?.mtimeMs ?? null
+              if (changedTime === null) {
+                if (file === inputFile) {
+                  rebuildStrategy = 'full'
+                }
+                continue
               }
 
-              return require(pluginPath)
-            },
-          })
-          context.build = build
-          css = build(hasTailwind ? candidates : [])
-        } else if (rebuildStrategy === 'incremental') {
-          css = context.build!(candidates)
-        }
+              let prevTime = context.mtimes.get(file)
+              if (prevTime === changedTime) continue
 
-        // Replace CSS
-        if (css !== context.css && optimize) {
-          context.optimizedCss = optimizeCss(css, {
-            minify: typeof optimize === 'object' ? optimize.minify : true,
-          })
-        }
-        context.css = css
-        root.removeAll()
-        root.append(postcss.parse(optimize ? context.optimizedCss : context.css, result.opts))
+              rebuildStrategy = 'full'
+              context.mtimes.set(file, changedTime)
+            }
+          }
+
+          // Do nothing if neither `@tailwind` nor `@apply` is used
+          if (!hasTailwind && !hasApply) return
+
+          let css = ''
+
+          // Look for candidates used to generate the CSS
+          let { candidates, files, globs } = scanDir({ base, globs: true })
+
+          // Add all found files as direct dependencies
+          for (let file of files) {
+            result.messages.push({
+              type: 'dependency',
+              plugin: '@tailwindcss/postcss',
+              file,
+              parent: result.opts.from,
+            })
+          }
+
+          // Register dependencies so changes in `base` cause a rebuild while
+          // giving tools like Vite or Parcel a glob that can be used to limit
+          // the files that cause a rebuild to only those that match it.
+          for (let { base, glob } of globs) {
+            result.messages.push({
+              type: 'dir-dependency',
+              plugin: '@tailwindcss/postcss',
+              dir: base,
+              glob,
+              parent: result.opts.from,
+            })
+          }
+
+          if (rebuildStrategy === 'full') {
+            let basePath = path.dirname(path.resolve(inputFile))
+            let { build } = compile(root.toString(), {
+              loadPlugin: (pluginPath) => {
+                if (pluginPath[0] === '.') {
+                  return require(path.resolve(basePath, pluginPath))
+                }
+
+                return require(pluginPath)
+              },
+            })
+            context.build = build
+            css = build(hasTailwind ? candidates : [])
+          } else if (rebuildStrategy === 'incremental') {
+            css = context.build!(candidates)
+          }
+
+          // Replace CSS
+          if (css !== context.css && optimize) {
+            context.optimizedCss = optimizeCss(css, {
+              minify: typeof optimize === 'object' ? optimize.minify : true,
+            })
+          }
+          context.css = css
+          root.removeAll()
+          root.append(postcss.parse(optimize ? context.optimizedCss : context.css, result.opts))
+        },
       },
     ],
   }

packages/@tailwindcss-postcss/tsup.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  format: ['esm', 'cjs'],
+  clean: true,
+  minify: true,
+  splitting: true,
+  cjsInterop: true,
+  dts: true,
+  entry: ['src/index.ts'],
+  noExternal: ['internal-postcss-fix-relative-paths'],
+})

packages/@tailwindcss-vite/package.json

@@ -11,7 +11,7 @@
   "bugs": "https://github.com/tailwindlabs/tailwindcss/issues",
   "homepage": "https://tailwindcss.com",
   "scripts": {
-    "build": "tsup-node ./src/index.ts --format esm --dts --minify --clean",
+    "build": "tsup-node",
     "dev": "pnpm run build -- --watch"
   },
   "files": [
@@ -30,10 +30,12 @@
   "dependencies": {
     "@tailwindcss/oxide": "workspace:^",
     "lightningcss": "^1.25.1",
+    "postcss-load-config": "^6.0.1",
     "tailwindcss": "workspace:^"
   },
   "devDependencies": {
     "@types/node": "^20.12.12",
+    "internal-postcss-fix-relative-paths": "workspace:^",
     "vite": "^5.2.11"
   },
   "peerDependencies": {

packages/@tailwindcss-vite/src/index.ts

@@ -1,6 +1,8 @@
 import { IO, Parsing, scanFiles } from '@tailwindcss/oxide'
+import fixRelativePathsPlugin from 'internal-postcss-fix-relative-paths'
 import { Features, transform } from 'lightningcss'
 import path from 'path'
+import postcssrc from 'postcss-load-config'
 import { compile } from 'tailwindcss'
 import type { Plugin, Rollup, Update, ViteDevServer } from 'vite'
 
@@ -101,7 +103,7 @@ export default function tailwindcss(): Plugin[] {
 
     for (let plugin of cssPlugins) {
       if (!plugin.transform) continue
-      const transformHandler =
+      let transformHandler =
         'handler' in plugin.transform! ? plugin.transform.handler : plugin.transform!
 
       try {
@@ -152,6 +154,56 @@ export default function tailwindcss(): Plugin[] {
         })
       },
 
+      // Append the postcss-fix-relative-paths plugin
+      async config(config) {
+        let postcssConfig = config.css?.postcss
+
+        if (typeof postcssConfig === 'string') {
+          // We expand string configs to their PostCSS config object similar to
+          // how Vite does it.
+          // See: https://github.com/vitejs/vite/blob/440783953a55c6c63cd09ec8d13728dc4693073d/packages/vite/src/node/plugins/css.ts#L1580
+          let searchPath = typeof postcssConfig === 'string' ? postcssConfig : config.root
+          let parsedConfig = await postcssrc({}, searchPath).catch((e: Error) => {
+            if (!e.message.includes('No PostCSS Config found')) {
+              if (e instanceof Error) {
+                let { name, message, stack } = e
+                e.name = 'Failed to load PostCSS config'
+                e.message = `Failed to load PostCSS config (searchPath: ${searchPath}): [${name}] ${message}\n${stack}`
+                e.stack = '' // add stack to message to retain stack
+                throw e
+              } else {
+                throw new Error(`Failed to load PostCSS config: ${e}`)
+              }
+            }
+            return null
+          })
+          if (parsedConfig !== null) {
+            postcssConfig = {
+              options: parsedConfig.options,
+              plugins: parsedConfig.plugins,
+            } as any
+          } else {
+            postcssConfig = {}
+          }
+          config.css = { postcss: postcssConfig }
+        }
+
+        // postcssConfig is no longer a string after the above. This test is to
+        // avoid TypeScript errors below.
+        if (typeof postcssConfig === 'string') {
+          return
+        }
+
+        if (!postcssConfig || !postcssConfig?.plugins) {
+          config.css = config.css || {}
+          config.css.postcss = postcssConfig || {}
+          config.css.postcss.plugins = [fixRelativePathsPlugin() as any, fixSvelte() as any]
+        } else {
+          postcssConfig.plugins.push(fixRelativePathsPlugin() as any)
+          postcssConfig.plugins.push(fixSvelte() as any)
+        }
+      },
+
       // Scan index.html for candidates
       transformIndexHtml(html) {
         let updated = scan(html, 'html')
@@ -244,7 +296,11 @@ function getExtension(id: string) {
 
 function isTailwindCssFile(id: string, src: string) {
   if (id.includes('/.vite/')) return
-  return getExtension(id) === 'css' && src.includes('@tailwind')
+  const extension = getExtension(id)
+  const isTailwind =
+    (extension === 'css' && src.includes('@tailwind')) ||
+    (extension === 'svelte' && id.endsWith('&lang.css'))
+  return isTailwind
 }
 
 function optimizeCss(
@@ -270,3 +326,18 @@ function optimizeCss(
     errorRecovery: true,
   }).code.toString()
 }
+
+export function fixSvelte() {
+  return {
+    postcssPlugin: 'tailwindcss-postcss-fix-svelte',
+    OnceExit: (root: any) => {
+      const filename = root.source.input.file
+      if (!filename.endsWith('.svelte?svelte&type=style&lang.css')) {
+        return
+      }
+      const content = root.toString()
+      let compiled = compile(content.replace('@tailwind ', '@failwind '), {}).build([''])
+      root.replaceWith(compiled.replace('@failwind ', ' @tailwind '))
+    },
+  }
+}

packages/@tailwindcss-vite/tsup.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  format: ['esm'],
+  clean: true,
+  minify: true,
+  dts: true,
+  entry: ['src/index.ts'],
+  noExternal: ['internal-postcss-fix-relative-paths'],
+})

packages/internal-postcss-fix-relative-paths/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "internal-postcss-fix-relative-paths",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "lint": "tsc --noEmit",
+    "build": "tsup-node ./src/index.ts --format cjs,esm --dts --cjsInterop --splitting --minify --clean",
+    "dev": "pnpm run build -- --watch"
+  },
+  "files": [
+    "dist/"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.mjs",
+      "require": "./dist/index.js"
+    }
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@types/node": "^20.12.12",
+    "@types/postcss-import": "^14.0.3",
+    "postcss": "8.4.24",
+    "postcss-import": "^16.1.0"
+  }
+}

packages/internal-postcss-fix-relative-paths/src/fixtures/example-project/src/index.css

@@ -0,0 +1,3 @@
+@content "./**/*.ts";
+@plugin "./plugin.js";
+@plugin "./what\"s-this.js";

packages/internal-postcss-fix-relative-paths/src/fixtures/example-project/src/invalid.css

@@ -0,0 +1,4 @@
+@plugin "/absolute/paths";
+@plugin "C:\Program Files\HAL 9000";
+@plugin "\\Media\Pictures\Worth\1000 words";
+@plugin "some-node-dep";

packages/internal-postcss-fix-relative-paths/src/fixtures/external-import/src/index.css

@@ -0,0 +1 @@
+@import '../../example-project/src/index.css';

packages/internal-postcss-fix-relative-paths/src/fixtures/external-import/src/invalid.css

@@ -0,0 +1 @@
+@import '../../example-project/src/invalid.css';

packages/internal-postcss-fix-relative-paths/src/fixtures/external-import/src/plugins-in-root.css

@@ -0,0 +1,5 @@
+@import './plugins-in-sibling.css';
+
+@plugin './plugin-in-root.ts';
+@plugin '../plugin-in-root.ts';
+@plugin 'plugin-in-root';

packages/internal-postcss-fix-relative-paths/src/fixtures/external-import/src/plugins-in-sibling.css

@@ -0,0 +1,3 @@
+@plugin './plugin-in-sibling.ts';
+@plugin '../plugin-in-sibling.ts';
+@plugin 'plugin-in-sibling';

packages/internal-postcss-fix-relative-paths/src/index.test.ts

@@ -0,0 +1,56 @@
+import fs from 'node:fs'
+import postcss from 'postcss'
+import atImport from 'postcss-import'
+import { describe, expect, test } from 'vitest'
+import fixRelativePathsPlugin from '.'
+
+describe('fixRelativePathsPlugin', () => {
+  test('rewrites @content and @plugin to be relative to the initial css file', async () => {
+    let cssPath = `${__dirname}/fixtures/external-import/src/index.css`
+    let css = fs.readFileSync(cssPath, 'utf-8')
+
+    let processor = postcss([atImport(), fixRelativePathsPlugin()])
+
+    let result = await processor.process(css, { from: cssPath })
+
+    expect(result.css.trim()).toMatchInlineSnapshot(`
+      "@content "../../example-project/src/**/*.ts";
+      @plugin "../../example-project/src/plugin.js";
+      @plugin "../../example-project/src/what\\"s-this.js";"
+    `)
+  })
+
+  test('should not rewrite non-relative paths', async () => {
+    let cssPath = `${__dirname}/fixtures/external-import/src/invalid.css`
+    let css = fs.readFileSync(cssPath, 'utf-8')
+
+    let processor = postcss([atImport(), fixRelativePathsPlugin()])
+
+    let result = await processor.process(css, { from: cssPath })
+
+    expect(result.css.trim()).toMatchInlineSnapshot(`
+      "@plugin "/absolute/paths";
+      @plugin "C:\\Program Files\\HAL 9000";
+      @plugin "\\\\Media\\Pictures\\Worth\\1000 words";
+      @plugin "some-node-dep";"
+    `)
+  })
+
+  test('should return relative paths even if the file is resolved in the same basedir as the root stylesheet', async () => {
+    let cssPath = `${__dirname}/fixtures/external-import/src/plugins-in-root.css`
+    let css = fs.readFileSync(cssPath, 'utf-8')
+
+    let processor = postcss([atImport(), fixRelativePathsPlugin()])
+
+    let result = await processor.process(css, { from: cssPath })
+
+    expect(result.css.trim()).toMatchInlineSnapshot(`
+      "@plugin './plugin-in-sibling.ts';
+      @plugin '../plugin-in-sibling.ts';
+      @plugin 'plugin-in-sibling';
+      @plugin './plugin-in-root.ts';
+      @plugin '../plugin-in-root.ts';
+      @plugin 'plugin-in-root';"
+    `)
+  })
+})

packages/internal-postcss-fix-relative-paths/src/index.ts

@@ -0,0 +1,101 @@
+import path from 'node:path'
+import type { AtRule, Container, Plugin } from 'postcss'
+
+const SINGLE_QUOTE = "'"
+const DOUBLE_QUOTE = '"'
+
+export default function fixRelativePathsPlugin(): Plugin {
+  // Retain a list of touched at-rules to avoid infinite loops
+  let touched: WeakSet<AtRule> = new WeakSet()
+
+  function fixRelativePath(atRule: AtRule) {
+    let rootPath = getRoot(atRule)?.source?.input.file
+    if (!rootPath) {
+      return
+    }
+
+    let inputFilePath = atRule?.source?.input.file
+    if (!inputFilePath) {
+      return
+    }
+
+    if (touched.has(atRule)) {
+      return
+    }
+
+    let value = atRule.params[0]
+
+    let quote =
+      value[0] === DOUBLE_QUOTE && value[value.length - 1] === DOUBLE_QUOTE
+        ? DOUBLE_QUOTE
+        : value[0] === SINGLE_QUOTE && value[value.length - 1] === SINGLE_QUOTE
+          ? SINGLE_QUOTE
+          : null
+    if (!quote) {
+      return
+    }
+    let content = atRule.params.slice(1, -1)
+
+    // We only want to rewrite relative paths.
+    if (!content.startsWith('./') && !content.startsWith('../')) {
+      return
+    }
+
+    let rulePath = path.posix.join(path.posix.dirname(inputFilePath), content)
+    let relative = path.posix.relative(path.posix.dirname(rootPath), rulePath)
+
+    // If the path points to a file in the same directory, `path.relative` will
+    // remove the leading `./` and we need to add it back in order to still
+    // consider the path relative
+    if (!relative.startsWith('.')) {
+      relative = './' + relative
+    }
+
+    atRule.params = quote + relative + quote
+    touched.add(atRule)
+  }
+
+  function getRoot(node: AtRule | Container | undefined): Container | undefined {
+    if (node?.parent) {
+      return getRoot(node.parent as Container)
+    }
+    return node
+  }
+
+  return {
+    postcssPlugin: 'tailwindcss-postcss-fix-relative-paths',
+    AtRule: {
+      content: fixRelativePath,
+      plugin: fixRelativePath,
+      // theme:  function (atRule: AtRule, { postcss }: { postcss: any }) {
+      //     if (touched.has(atRule)) {
+      //     return
+      //   }
+      // }
+      // apply: function (atRule: AtRule, { postcss }: { postcss: any }) {
+      //   if (touched.has(atRule)) {
+      //     return
+      //   }
+      //   if(atRule.name)
+      //   if (atRule.params[0] === "'") {
+      //     return
+      //   }
+      //   atRule.params = `'${atRule.params}'`
+      //   touched.add(atRule)
+      //   // Convert atRule to a comment
+      //   // atRule.replaceWith(
+      //   //   postcss.rule({
+      //   //     selector: '& .CUSTOM-foo-base476',
+      //   //     nodes: [],
+      //   //   }),
+      //   // )
+      //   // atRule.before(postcss.comment({ text: '! custom' + atRule.toString() }))
+      //   // if (atRule.name === 'apply') {
+      //   //   atRule.name = 'comment'
+      //   //   atRule.params = 'tailwindcss-apply'
+      //   //   return
+      //   // }
+      // },
+    },
+  }
+}

packages/internal-postcss-fix-relative-paths/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "../tsconfig.base.json",
+}

packages/tailwindcss/src/index.ts

@@ -305,10 +305,15 @@ export function compile(
   if (css.includes('@apply')) {
     walk(ast, (node, { replaceWith }) => {
       if (node.kind === 'rule' && node.selector[0] === '@' && node.selector.startsWith('@apply')) {
-        let candidates = node.selector
+        let candidates: any = node.selector
           .slice(7 /* Ignore `@apply ` when parsing the selector */)
           .trim()
-          .split(/\s+/g)
+
+        if (candidates[0] === "'" || candidates[0] === '"') {
+          candidates = candidates.slice(1, -1)
+        }
+
+        candidates = candidates.split(/\s+/g)
 
         // Replace the `@apply` rule with the actual utility classes
         {

packages/tailwindcss/theme.css

@@ -435,7 +435,8 @@
   --transition-timing-function-in: cubic-bezier(0.4, 0, 1, 1);
   --transition-timing-function-out: cubic-bezier(0, 0, 0.2, 1);
   --transition-timing-function-in-out: cubic-bezier(0.4, 0, 0.2, 1);
-
+}
+@theme {
   @keyframes spin {
     to {
       transform: rotate(360deg);

playgrounds/vite/package.json

@@ -9,10 +9,13 @@
     "preview": "bun --bun vite preview"
   },
   "dependencies": {
+    "@sveltejs/vite-plugin-svelte": "^3.1.1",
     "@tailwindcss/vite": "workspace:^",
     "@vitejs/plugin-react": "^4.3.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "svelte": "^4.2.18",
+    "svelte-preprocess": "^6.0.2",
     "tailwindcss": "workspace:^"
   },
   "devDependencies": {

playgrounds/vite/src/App.svelte

@@ -0,0 +1,9 @@
+<script>
+  let name = 'world'
+</script>
+
+<h1 class="foo any-hover:text-red-500 hover:underline">Hello {name}!</h1>
+
+<style>
+  @tailwind utilities;
+</style>

playgrounds/vite/src/app.css

@@ -1,2 +0,0 @@
-@import 'tailwindcss';
-@plugin "./plugin.js";

playgrounds/vite/src/main.tsx

@@ -1,9 +1,7 @@
-import React from 'react'
-import ReactDOM from 'react-dom/client'
-import { App } from './app'
+import App from './App.svelte'
 
-ReactDOM.createRoot(document.getElementById('app')!).render(
-  <React.StrictMode>
-    <App />
-  </React.StrictMode>,
-)
+const app = new App({
+  target: document.getElementById('app'),
+})
+
+export default app

playgrounds/vite/vite.config.ts

@@ -1,7 +1,35 @@
+import { svelte, vitePreprocess } from '@sveltejs/vite-plugin-svelte'
 import tailwindcss from '@tailwindcss/vite'
-import react from '@vitejs/plugin-react'
 import { defineConfig } from 'vite'
 
 export default defineConfig({
-  plugins: [react(), tailwindcss()],
+  plugins: [
+    svelte({
+      preprocess: [
+        // sveltePreprocess({
+        //   aliases: [
+        //     ['tailwindcss', 'tailwindcss'],
+        //     ['tailwind', 'tailwindcss'],
+        //     ['postcss', 'tailwindcss'],
+        //   ],
+        //   /** Add a custom language preprocessor */
+        //   tailwindcss({ content, filename, attributes }) {
+        //     let compiled = compile(content.replace('@tailwind ', '@failwind '), {}).build(
+        //       Array.from(['']),
+        //     )
+        //     console.log({ compiled, attributes })
+        //     return Promise.resolve({
+        //       code: compiled.replace('@failwind ', '@tailwind '),
+        //       map: '',
+        //       attributes,
+        //     })
+        //   },
+        // }),
+        vitePreprocess(),
+      ],
+    }),
+    tailwindcss(),
+  ],
 })
+
+// @tailwindcss/svelte

pnpm-lock.yaml

@@ -109,6 +109,9 @@ importers:
       '@tailwindcss/oxide':
         specifier: workspace:^
         version: link:../../crates/node
+      internal-postcss-fix-relative-paths:
+        specifier: workspace:^
+        version: link:../internal-postcss-fix-relative-paths
       lightningcss:
         specifier: ^1.25.1
         version: 1.25.1
@@ -137,6 +140,9 @@ importers:
       '@tailwindcss/oxide':
         specifier: workspace:^
         version: link:../../crates/node
+      internal-postcss-fix-relative-paths:
+        specifier: workspace:^
+        version: link:../internal-postcss-fix-relative-paths
       lightningcss:
         specifier: ^1.25.1
         version: 1.25.1
@@ -168,6 +174,9 @@ importers:
       lightningcss:
         specifier: ^1.25.1
         version: 1.25.1
+      postcss-load-config:
+        specifier: ^6.0.1
+        version: 6.0.1(postcss@8.4.38)(yaml@2.4.2)
       tailwindcss:
         specifier: workspace:^
         version: link:../tailwindcss
@@ -175,12 +184,30 @@ importers:
       '@types/node':
         specifier: ^20.12.12
         version: 20.12.12
+      internal-postcss-fix-relative-paths:
+        specifier: workspace:^
+        version: link:../internal-postcss-fix-relative-paths
       vite:
         specifier: ^5.2.11
         version: 5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)
 
   packages/internal-example-plugin: {}
 
+  packages/internal-postcss-fix-relative-paths:
+    devDependencies:
+      '@types/node':
+        specifier: ^20.12.12
+        version: 20.12.12
+      '@types/postcss-import':
+        specifier: ^14.0.3
+        version: 14.0.3
+      postcss:
+        specifier: 8.4.24
+        version: 8.4.24
+      postcss-import:
+        specifier: ^16.1.0
+        version: 16.1.0(postcss@8.4.24)
+
   packages/tailwindcss:
     devDependencies:
       '@tailwindcss/oxide':
@@ -235,6 +262,9 @@ importers:
 
   playgrounds/vite:
     dependencies:
+      '@sveltejs/vite-plugin-svelte':
+        specifier: ^3.1.1
+        version: 3.1.1(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))
       '@tailwindcss/vite':
         specifier: workspace:^
         version: link:../../packages/@tailwindcss-vite
@@ -247,6 +277,12 @@ importers:
       react-dom:
         specifier: ^18.3.1
         version: 18.3.1(react@18.3.1)
+      svelte:
+        specifier: ^4.2.18
+        version: 4.2.18
+      svelte-preprocess:
+        specifier: ^6.0.2
+        version: 6.0.2(@babel/core@7.24.6)(postcss-load-config@6.0.1(postcss@8.4.38))(postcss@8.4.38)(svelte@4.2.18)(typescript@5.4.5)
       tailwindcss:
         specifier: workspace:^
         version: link:../../packages/tailwindcss
@@ -1008,6 +1044,21 @@ packages:
   '@sinclair/typebox@0.27.8':
     resolution: {integrity: sha512-+Fj43pSMwJs4KRrH/938Uf+uAELIgVBmQzg/q1YG10djyfA3TnrU8N8XzqCh/okZdszqBQTZf96idMfE5lnwTA==}
 
+  '@sveltejs/vite-plugin-svelte-inspector@2.1.0':
+    resolution: {integrity: sha512-9QX28IymvBlSCqsCll5t0kQVxipsfhFFL+L2t3nTWfXnddYwxBuAEtTtlaVQpRz9c37BhJjltSeY4AJSC03SSg==}
+    engines: {node: ^18.0.0 || >=20}
+    peerDependencies:
+      '@sveltejs/vite-plugin-svelte': ^3.0.0
+      svelte: ^4.0.0 || ^5.0.0-next.0
+      vite: ^5.0.0
+
+  '@sveltejs/vite-plugin-svelte@3.1.1':
+    resolution: {integrity: sha512-rimpFEAboBBHIlzISibg94iP09k/KYdHgVhJlcsTfn7KMBhc70jFX/GRWkRdFCc2fdnk+4+Bdfej23cMDnJS6A==}
+    engines: {node: ^18.0.0 || >=20}
+    peerDependencies:
+      svelte: ^4.0.0 || ^5.0.0-next.0
+      vite: ^5.0.0
+
   '@swc/helpers@0.5.2':
     resolution: {integrity: sha512-E4KcWTpoLHqwPHLxidpOqQbcrZVgi0rsmmZXUle1jXmJfuIf/UWpczUJ7MZZ5tlxytgJXyp0w4PGkkeLiuIdZw==}
 
@@ -1213,6 +1264,10 @@ packages:
   axobject-query@3.2.1:
     resolution: {integrity: sha512-jsyHu61e6N4Vbz/v18DHwWYKK0bSWLqn47eeDSKPB7m8tqMHF9YJ+mhIk2lVteyZrY8tnSj/jHOv4YiTCuCJgg==}
 
+  axobject-query@4.1.0:
+    resolution: {integrity: sha512-qIj0G9wZbMGNLjLmg1PT6v2mE9AH2zlnADJD/2tC6E00hgmhUOfEB6greHPAfLRSufHqROIUTkw6E+M3lH0PTQ==}
+    engines: {node: '>= 0.4'}
+
   balanced-match@1.0.2:
     resolution: {integrity: sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==}
 
@@ -1237,6 +1292,7 @@ packages:
 
   bun@1.1.10:
     resolution: {integrity: sha512-qOJXrQZSzJ5DbJMt47GZGWtUSmIkbwD7fPSN/XS/T46D4cTTnPK46QDHlyC8VD+Anvs6uKNwuwKIyB31kUdHmQ==}
+    cpu: [arm64, x64]
     os: [darwin, linux, win32]
     hasBin: true
 
@@ -1287,6 +1343,9 @@ packages:
   client-only@0.0.1:
     resolution: {integrity: sha512-IV3Ou0jSMzZrd3pZ48nLkT9DA7Ag1pnPzaiQhpW7c3RbcqqzvzzVu+L8gfqMp/8IM2MQtSiqaCxrrcfu8I8rMA==}
 
+  code-red@1.0.4:
+    resolution: {integrity: sha512-7qJWqItLA8/VPVlKJlFXU+NBlo/qyfs39aJcuMT/2ere32ZqvF5OSxgdM5xOfJJ7O429gg2HM47y8v9P+9wrNw==}
+
   color-convert@1.9.3:
     resolution: {integrity: sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==}
 
@@ -1317,6 +1376,10 @@ packages:
     resolution: {integrity: sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==}
     engines: {node: '>= 8'}
 
+  css-tree@2.3.1:
+    resolution: {integrity: sha512-6Fv1DV/TYw//QF5IzQdqsNDjx/wc8TrMBZsqjL9eW01tWb7R7k/mq+/VXfJCl7SoD5emsJop9cOByJZfs8hYIw==}
+    engines: {node: ^10 || ^12.20.0 || ^14.13.0 || >=15.0.0}
+
   csstype@3.1.3:
     resolution: {integrity: sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==}
 
@@ -1359,6 +1422,10 @@ packages:
   deep-is@0.1.4:
     resolution: {integrity: sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==}
 
+  deepmerge@4.3.1:
+    resolution: {integrity: sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A==}
+    engines: {node: '>=0.10.0'}
+
   define-data-property@1.1.4:
     resolution: {integrity: sha512-rBMvIzlpA8v6E+SJZoo++HAYqsLrkg7MSfIinMPFhmkorw7X+dOXVJQs+QT69zGkzMyfDnIMN2Wid1+NbL3T+A==}
     engines: {node: '>= 0.4'}
@@ -1853,6 +1920,9 @@ packages:
     resolution: {integrity: sha512-Fd4gABb+ycGAmKou8eMftCupSir5lRxqf4aD/vd0cD2qc4HL07OjCeuHMr8Ro4CoMaeCKDB0/ECBOVWjTwUvPQ==}
     engines: {node: '>=8'}
 
+  is-reference@3.0.2:
+    resolution: {integrity: sha512-v3rht/LgVcsdZa3O2Nqs+NMowLOxeOm7Ay9+/ARQ2F+qEoANRcqrjAZKGN0v8ymUetZGgkp26LTnGT7H0Qo9Pg==}
+
   is-regex@1.1.4:
     resolution: {integrity: sha512-kvRdxDsxZjhzUX07ZnLydzS1TU/TJlTUHHY4YLL87e37oUA49DfkLqgy+VjFocowy29cKvcSiu+kIv728jTTVg==}
     engines: {node: '>= 0.4'}
@@ -1973,6 +2043,10 @@ packages:
   keyv@4.5.4:
     resolution: {integrity: sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==}
 
+  kleur@4.1.5:
+    resolution: {integrity: sha512-o+NO+8WrRiQEE4/7nwRJhN1HWpVmJm511pBHUxPLtp0BUISzlBplORYSmTclCnJvQq2tKu/sgl3xVpkc7ZWuQQ==}
+    engines: {node: '>=6'}
+
   language-subtag-registry@0.3.23:
     resolution: {integrity: sha512-0K65Lea881pHotoGEa5gDlMxt3pctLi2RplBb7Ezh4rRdLEOtgi7n4EwK9lamnUCkKBqaeKRVebTq6BAxSkpXQ==}
 
@@ -2057,6 +2131,9 @@ packages:
     resolution: {integrity: sha512-ok6z3qlYyCDS4ZEU27HaU6x/xZa9Whf8jD4ptH5UZTQYZVYeb9bnZ3ojVhiJNLiXK1Hfc0GNbLXcmZ5plLDDBg==}
     engines: {node: '>=14'}
 
+  locate-character@3.0.0:
+    resolution: {integrity: sha512-SW13ws7BjaeJ6p7Q6CO2nchbYEc3X3J6WrmTTDto7yMPqVSZTUyY5Tjbid+Ab8gLnATtygYtiDIJGQRRn2ZOiA==}
+
   locate-path@6.0.0:
     resolution: {integrity: sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==}
     engines: {node: '>=10'}
@@ -2091,6 +2168,9 @@ packages:
     resolution: {integrity: sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==}
     engines: {node: '>=10'}
 
+  mdn-data@2.0.30:
+    resolution: {integrity: sha512-GaqWWShW4kv/G9IEucWScBx9G1/vsFZZJUO+tD26M8J8z3Kw5RDQjaoZe03YAClgeS/SWPOcb4nkFBTEi5DUEA==}
+
   merge-stream@2.0.0:
     resolution: {integrity: sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==}
 
@@ -2288,6 +2368,9 @@ packages:
   pathval@1.1.1:
     resolution: {integrity: sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==}
 
+  periscopic@3.1.0:
+    resolution: {integrity: sha512-vKiQ8RRtkl9P+r/+oefh25C3fhybptkHKCZSPlcXiJux2tJF55GnEj3BVn4A5gKfq9NWWXXrxkHBwVPUfH0opw==}
+
   picocolors@1.0.1:
     resolution: {integrity: sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew==}
 
@@ -2338,6 +2421,24 @@ packages:
       ts-node:
         optional: true
 
+  postcss-load-config@6.0.1:
+    resolution: {integrity: sha512-oPtTM4oerL+UXmx+93ytZVN82RrlY/wPUV8IeDxFrzIjXOLF1pN+EmKPLbubvKHT2HC20xXsCAH2Z+CKV6Oz/g==}
+    engines: {node: '>= 18'}
+    peerDependencies:
+      jiti: '>=1.21.0'
+      postcss: '>=8.0.9'
+      tsx: ^4.8.1
+      yaml: ^2.4.2
+    peerDependenciesMeta:
+      jiti:
+        optional: true
+      postcss:
+        optional: true
+      tsx:
+        optional: true
+      yaml:
+        optional: true
+
   postcss-value-parser@4.2.0:
     resolution: {integrity: sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==}
 
@@ -2618,6 +2719,53 @@ packages:
     resolution: {integrity: sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==}
     engines: {node: '>= 0.4'}
 
+  svelte-hmr@0.16.0:
+    resolution: {integrity: sha512-Gyc7cOS3VJzLlfj7wKS0ZnzDVdv3Pn2IuVeJPk9m2skfhcu5bq3wtIZyQGggr7/Iim5rH5cncyQft/kRLupcnA==}
+    engines: {node: ^12.20 || ^14.13.1 || >= 16}
+    peerDependencies:
+      svelte: ^3.19.0 || ^4.0.0
+
+  svelte-preprocess@6.0.2:
+    resolution: {integrity: sha512-OvDTLfaOkkhjprbDKO0SOCkjNYuHy16dbD4SpqbIi6QiabOMHxRT4km5/dzbFFkmW1L0E2INF3MFltG2pgOyKQ==}
+    engines: {node: '>= 18.0.0'}
+    peerDependencies:
+      '@babel/core': ^7.10.2
+      coffeescript: ^2.5.1
+      less: ^3.11.3 || ^4.0.0
+      postcss: ^7 || ^8
+      postcss-load-config: '>=3'
+      pug: ^3.0.0
+      sass: ^1.26.8
+      stylus: '>=0.55'
+      sugarss: ^2.0.0 || ^3.0.0 || ^4.0.0
+      svelte: ^4.0.0 || ^5.0.0-next.100 || ^5.0.0
+      typescript: ^5.0.0
+    peerDependenciesMeta:
+      '@babel/core':
+        optional: true
+      coffeescript:
+        optional: true
+      less:
+        optional: true
+      postcss:
+        optional: true
+      postcss-load-config:
+        optional: true
+      pug:
+        optional: true
+      sass:
+        optional: true
+      stylus:
+        optional: true
+      sugarss:
+        optional: true
+      typescript:
+        optional: true
+
+  svelte@4.2.18:
+    resolution: {integrity: sha512-d0FdzYIiAePqRJEb90WlJDkjUEx42xhivxN8muUBmfZnP+tzUgz12DJ2hRJi8sIHCME7jeK1PTMgKPSfTd8JrA==}
+    engines: {node: '>=16'}
+
   tapable@2.2.1:
     resolution: {integrity: sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ==}
     engines: {node: '>=6'}
@@ -2822,6 +2970,14 @@ packages:
       terser:
         optional: true
 
+  vitefu@0.2.5:
+    resolution: {integrity: sha512-SgHtMLoqaeeGnd2evZ849ZbACbnwQCIwRH57t18FxcXoZop0uQu0uzlIhJBlF/eWVzuce0sHeqPcDo+evVcg8Q==}
+    peerDependencies:
+      vite: ^3.0.0 || ^4.0.0 || ^5.0.0
+    peerDependenciesMeta:
+      vite:
+        optional: true
+
   vitest@1.6.0:
     resolution: {integrity: sha512-H5r/dN06swuFnzNFhq/dnz37bPXnq8xB2xB5JOVk8K09rUtoeNN+LHWkoQ0A/i3hvbUKKcCei9KpbxqHMLhLLA==}
     engines: {node: ^18.0.0 || >=20.0.0}
@@ -3451,6 +3607,29 @@ snapshots:
 
   '@sinclair/typebox@0.27.8': {}
 
+  '@sveltejs/vite-plugin-svelte-inspector@2.1.0(@sveltejs/vite-plugin-svelte@3.1.1(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)))(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))':
+    dependencies:
+      '@sveltejs/vite-plugin-svelte': 3.1.1(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))
+      debug: 4.3.4
+      svelte: 4.2.18
+      vite: 5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)
+    transitivePeerDependencies:
+      - supports-color
+
+  '@sveltejs/vite-plugin-svelte@3.1.1(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))':
+    dependencies:
+      '@sveltejs/vite-plugin-svelte-inspector': 2.1.0(@sveltejs/vite-plugin-svelte@3.1.1(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)))(svelte@4.2.18)(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))
+      debug: 4.3.4
+      deepmerge: 4.3.1
+      kleur: 4.1.5
+      magic-string: 0.30.10
+      svelte: 4.2.18
+      svelte-hmr: 0.16.0(svelte@4.2.18)
+      vite: 5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)
+      vitefu: 0.2.5(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1))
+    transitivePeerDependencies:
+      - supports-color
+
   '@swc/helpers@0.5.2':
     dependencies:
       tslib: 2.6.2
@@ -3732,6 +3911,8 @@ snapshots:
     dependencies:
       dequal: 2.0.3
 
+  axobject-query@4.1.0: {}
+
   balanced-match@1.0.2: {}
 
   binary-extensions@2.3.0: {}
@@ -3829,6 +4010,14 @@ snapshots:
 
   client-only@0.0.1: {}
 
+  code-red@1.0.4:
+    dependencies:
+      '@jridgewell/sourcemap-codec': 1.4.15
+      '@types/estree': 1.0.5
+      acorn: 8.11.3
+      estree-walker: 3.0.3
+      periscopic: 3.1.0
+
   color-convert@1.9.3:
     dependencies:
       color-name: 1.1.3
@@ -3855,6 +4044,11 @@ snapshots:
       shebang-command: 2.0.0
       which: 2.0.2
 
+  css-tree@2.3.1:
+    dependencies:
+      mdn-data: 2.0.30
+      source-map-js: 1.2.0
+
   csstype@3.1.3: {}
 
   damerau-levenshtein@1.0.8: {}
@@ -3891,6 +4085,8 @@ snapshots:
 
   deep-is@0.1.4: {}
 
+  deepmerge@4.3.1: {}
+
   define-data-property@1.1.4:
     dependencies:
       es-define-property: 1.0.0
@@ -4092,7 +4288,7 @@ snapshots:
       eslint: 8.57.0
       eslint-import-resolver-node: 0.3.9
       eslint-import-resolver-typescript: 3.6.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.29.1(eslint@8.57.0))(eslint@8.57.0)
-      eslint-plugin-import: 2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.29.1(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-plugin-import: 2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1)(eslint@8.57.0)
       eslint-plugin-jsx-a11y: 6.8.0(eslint@8.57.0)
       eslint-plugin-react: 7.34.1(eslint@8.57.0)
       eslint-plugin-react-hooks: 4.6.2(eslint@8.57.0)
@@ -4116,7 +4312,7 @@ snapshots:
       enhanced-resolve: 5.16.1
       eslint: 8.57.0
       eslint-module-utils: 2.8.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.29.1(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
-      eslint-plugin-import: 2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.29.1(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-plugin-import: 2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1)(eslint@8.57.0)
       fast-glob: 3.3.2
       get-tsconfig: 4.7.5
       is-core-module: 2.13.1
@@ -4138,7 +4334,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  eslint-plugin-import@2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.29.1(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0):
+  eslint-plugin-import@2.29.1(@typescript-eslint/parser@6.21.0(eslint@8.57.0)(typescript@5.4.5))(eslint-import-resolver-typescript@3.6.1)(eslint@8.57.0):
     dependencies:
       array-includes: 3.1.8
       array.prototype.findlastindex: 1.2.5
@@ -4584,6 +4780,10 @@ snapshots:
 
   is-path-inside@3.0.3: {}
 
+  is-reference@3.0.2:
+    dependencies:
+      '@types/estree': 1.0.5
+
   is-regex@1.1.4:
     dependencies:
       call-bind: 1.0.7
@@ -4702,6 +4902,8 @@ snapshots:
     dependencies:
       json-buffer: 3.0.1
 
+  kleur@4.1.5: {}
+
   language-subtag-registry@0.3.23: {}
 
   language-tags@1.0.9:
@@ -4765,6 +4967,8 @@ snapshots:
       mlly: 1.7.0
       pkg-types: 1.1.1
 
+  locate-character@3.0.0: {}
+
   locate-path@6.0.0:
     dependencies:
       p-locate: 5.0.0
@@ -4801,6 +5005,8 @@ snapshots:
     dependencies:
       semver: 7.6.2
 
+  mdn-data@2.0.30: {}
+
   merge-stream@2.0.0: {}
 
   merge2@1.4.1: {}
@@ -4996,6 +5202,12 @@ snapshots:
 
   pathval@1.1.1: {}
 
+  periscopic@3.1.0:
+    dependencies:
+      '@types/estree': 1.0.5
+      estree-walker: 3.0.3
+      is-reference: 3.0.2
+
   picocolors@1.0.1: {}
 
   picomatch@2.3.1: {}
@@ -5034,6 +5246,13 @@ snapshots:
     optionalDependencies:
       postcss: 8.4.24
 
+  postcss-load-config@6.0.1(postcss@8.4.38)(yaml@2.4.2):
+    dependencies:
+      lilconfig: 3.1.1
+    optionalDependencies:
+      postcss: 8.4.38
+      yaml: 2.4.2
+
   postcss-value-parser@4.2.0: {}
 
   postcss@8.4.24:
@@ -5335,6 +5554,36 @@ snapshots:
 
   supports-preserve-symlinks-flag@1.0.0: {}
 
+  svelte-hmr@0.16.0(svelte@4.2.18):
+    dependencies:
+      svelte: 4.2.18
+
+  svelte-preprocess@6.0.2(@babel/core@7.24.6)(postcss-load-config@6.0.1(postcss@8.4.38))(postcss@8.4.38)(svelte@4.2.18)(typescript@5.4.5):
+    dependencies:
+      svelte: 4.2.18
+    optionalDependencies:
+      '@babel/core': 7.24.6
+      postcss: 8.4.38
+      postcss-load-config: 6.0.1(postcss@8.4.38)(yaml@2.4.2)
+      typescript: 5.4.5
+
+  svelte@4.2.18:
+    dependencies:
+      '@ampproject/remapping': 2.3.0
+      '@jridgewell/sourcemap-codec': 1.4.15
+      '@jridgewell/trace-mapping': 0.3.25
+      '@types/estree': 1.0.5
+      acorn: 8.11.3
+      aria-query: 5.3.0
+      axobject-query: 4.1.0
+      code-red: 1.0.4
+      css-tree: 2.3.1
+      estree-walker: 3.0.3
+      is-reference: 3.0.2
+      locate-character: 3.0.0
+      magic-string: 0.30.10
+      periscopic: 3.1.0
+
   tapable@2.2.1: {}
 
   test-exclude@6.0.0:
@@ -5542,6 +5791,10 @@ snapshots:
       fsevents: 2.3.3
       lightningcss: 1.25.1
 
+  vitefu@0.2.5(vite@5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)):
+    optionalDependencies:
+      vite: 5.2.11(@types/node@20.12.12)(lightningcss@1.25.1)
+
   vitest@1.6.0(@types/node@20.12.12)(lightningcss@1.25.1):
     dependencies:
       '@vitest/expect': 1.6.0