Add test

integrations/tailwindcss-cli/package-lock.json

@@ -12,13 +12,13 @@
       }
     },
     "../..": {
-      "version": "3.0.24",
+      "version": "3.1.5",
       "license": "MIT",
       "dependencies": {
-        "arg": "^5.0.1",
+        "arg": "^5.0.2",
         "chokidar": "^3.5.3",
         "color-name": "^1.1.4",
-        "detective": "^5.2.0",
+        "detective": "^5.2.1",
         "didyoumean": "^1.2.2",
         "dlv": "^1.1.3",
         "fast-glob": "^3.2.11",
@@ -36,26 +36,26 @@
         "postcss-selector-parser": "^6.0.10",
         "postcss-value-parser": "^4.2.0",
         "quick-lru": "^5.1.1",
-        "resolve": "^1.22.0"
+        "resolve": "^1.22.1"
       },
       "bin": {
         "tailwind": "lib/cli.js",
         "tailwindcss": "lib/cli.js"
       },
       "devDependencies": {
+        "@parcel/css": "^1.11.2",
         "@swc/cli": "^0.1.57",
-        "@swc/core": "^1.2.160",
+        "@swc/core": "^1.2.196",
         "@swc/jest": "^0.2.21",
         "@swc/register": "^0.1.10",
         "autoprefixer": "^10.4.7",
-        "cssnano": "^5.1.9",
+        "esbuild": "^0.14.48",
-        "esbuild": "^0.14.39",
+        "eslint": "^8.18.0",
-        "eslint": "^8.15.0",
         "eslint-config-prettier": "^8.5.0",
-        "eslint-plugin-prettier": "^4.0.0",
+        "eslint-plugin-prettier": "^4.2.1",
-        "jest": "^28.0.3",
+        "jest": "^28.1.2",
-        "jest-diff": "^28.1.0",
+        "jest-diff": "^28.1.1",
-        "prettier": "^2.6.2",
+        "prettier": "^2.7.1",
         "prettier-plugin-tailwindcss": "^0.1.11",
         "rimraf": "^3.0.0",
         "source-map-js": "^1.0.2"
@@ -76,27 +76,27 @@
     "tailwindcss": {
       "version": "file:../..",
       "requires": {
+        "@parcel/css": "^1.11.2",
         "@swc/cli": "^0.1.57",
-        "@swc/core": "^1.2.160",
+        "@swc/core": "^1.2.196",
         "@swc/jest": "^0.2.21",
         "@swc/register": "^0.1.10",
-        "arg": "^5.0.1",
+        "arg": "^5.0.2",
         "autoprefixer": "^10.4.7",
         "chokidar": "^3.5.3",
         "color-name": "^1.1.4",
-        "cssnano": "^5.1.9",
+        "detective": "^5.2.1",
-        "detective": "^5.2.0",
         "didyoumean": "^1.2.2",
         "dlv": "^1.1.3",
-        "esbuild": "^0.14.39",
+        "esbuild": "^0.14.48",
-        "eslint": "^8.15.0",
+        "eslint": "^8.18.0",
         "eslint-config-prettier": "^8.5.0",
-        "eslint-plugin-prettier": "^4.0.0",
+        "eslint-plugin-prettier": "^4.2.1",
         "fast-glob": "^3.2.11",
         "glob-parent": "^6.0.2",
         "is-glob": "^4.0.3",
-        "jest": "^28.0.3",
+        "jest": "^28.1.2",
-        "jest-diff": "^28.1.0",
+        "jest-diff": "^28.1.1",
         "lilconfig": "^2.0.5",
         "normalize-path": "^3.0.0",
         "object-hash": "^3.0.0",
@@ -108,10 +108,10 @@
         "postcss-nested": "5.0.6",
         "postcss-selector-parser": "^6.0.10",
         "postcss-value-parser": "^4.2.0",
-        "prettier": "^2.6.2",
+        "prettier": "^2.7.1",
         "prettier-plugin-tailwindcss": "^0.1.11",
         "quick-lru": "^5.1.1",
-        "resolve": "^1.22.0",
+        "resolve": "^1.22.1",
         "rimraf": "^3.0.0",
         "source-map-js": "^1.0.2"
       }

integrations/tailwindcss-cli/tests/cli.test.js

@@ -96,6 +96,21 @@ describe('Build command', () => {
     expect(withoutMinify.length).toBeGreaterThan(withMinify.length)
   })
 
+  test('--minify applies @parcel/css optimizations', async () => {
+    await writeInputFile('index.html', html`<div class="font-bold"></div>`)
+    await writeInputFile('index.css', css`
+      .text-teal {
+        color: hsl(calc(360deg / 2) 50% 50%);
+      }
+    `)
+
+    await $(`${EXECUTABLE} --input ./src/index.css --output ./dist/main.css --minify`)
+
+    let withMinify = await readOutputFile('main.css')
+
+    expect(withMinify).toEqual(css`.text-teal{color:#40bfbf}`)
+  })
+
   test('--no-autoprefixer', async () => {
     await writeInputFile('index.html', html`<div class="select-none"></div>`)
 

package.json

@@ -15,7 +15,7 @@
   "scripts": {
     "preswcify": "npm run generate && rimraf lib",
     "swcify": "swc src --out-dir lib --copy-files",
-    "postswcify": "esbuild lib/cli-peer-dependencies.js --bundle --platform=node --outfile=peers/index.js",
+    "postswcify": "esbuild lib/cli-peer-dependencies.js --bundle --platform=node --outfile=peers/index.js --define:process.env.CSS_TRANSFORMER_WASM=false",
     "rebuild-fixtures": "npm run swcify && node -r @swc/register scripts/rebuildFixtures.js",
     "prepublishOnly": "npm install --force && npm run swcify",
     "style": "eslint .",
@@ -42,12 +42,12 @@
     "*.js"
   ],
   "devDependencies": {
+    "@parcel/css": "^1.11.2",
     "@swc/cli": "^0.1.57",
     "@swc/core": "^1.2.244",
     "@swc/jest": "^0.2.22",
     "@swc/register": "^0.1.10",
     "autoprefixer": "^10.4.8",
-    "cssnano": "^5.1.13",
     "esbuild": "^0.14.54",
     "eslint": "^8.21.0",
     "eslint-config-prettier": "^8.5.0",

src/cli-peer-dependencies.js

@@ -10,6 +10,6 @@ export function lazyAutoprefixer() {
   return require('autoprefixer')
 }
 
-export function lazyCssnano() {
+export function lazyParcelCss() {
-  return require('cssnano')
+  return require('@parcel/css')
 }

src/cli.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-import { lazyPostcss, lazyPostcssImport, lazyCssnano, lazyAutoprefixer } from '../peers/index.js'
+import { lazyPostcss, lazyPostcssImport, lazyParcelCss, lazyAutoprefixer } from '../peers/index.js'
 
 import chokidar from 'chokidar'
 import path from 'path'
@@ -353,6 +353,65 @@ if (args['--help']) {
 
 run()
 
+/// ---
+
+/** @type {import('@parcel/css')} */
+let parcelCss
+
+/** @returns {import('@parcel/css')} */
+function loadParcelCss() {
+  if (parcelCss) {
+    return parcelCss
+  }
+
+  // Try to load a local version first
+  try {
+    return parcelCss = require('@parcel/css')
+  } catch {}
+
+  return parcelCss = lazyParcelCss()
+}
+
+/**
+ *
+ * @param {boolean} shouldMinify
+ * @param {import('postcss').Result} result
+ * @returns {import('postcss').Result}
+ */
+async function minifyCss(shouldMinify, result) {
+  if (! shouldMinify) {
+    return result
+  }
+
+  let css = loadParcelCss()
+  let transformed
+
+  try {
+    transformed = css.transform({
+      filename: result.opts.from || 'input.css',
+      code: Buffer.from(result.css, 'utf-8'),
+      minify: true,
+      sourceMap: true,
+      sourceMap: !!result.map,
+      inputSourceMap: result.map ? result.map.toString() : undefined,
+    })
+  } catch (err) {
+    console.error("Unable to minify CSS. Using unminified version instead.")
+    console.error(err)
+
+    return result
+  }
+
+  return Object.assign(result, {
+    css: transformed.code.toString('utf8'),
+    map: result.map ? Object.assign(result.map, {
+      toString() {
+        return transformed.map.toString()
+      }
+    }) : result.map,
+  })
+}
+
 // ---
 
 function init() {
@@ -626,17 +685,6 @@ async function build() {
 
           return lazyAutoprefixer()
         })(),
-      args['--minify'] &&
-        (() => {
-          let options = { preset: ['default', { cssDeclarationSorter: false }] }
-
-          // Try to load a local `cssnano` version first
-          try {
-            return require('cssnano')
-          } catch {}
-
-          return lazyCssnano()(options)
-        })(),
     ].filter(Boolean)
 
     let postcss = loadPostcss()
@@ -647,6 +695,7 @@ async function build() {
       return Promise.resolve()
         .then(() => (output ? fs.promises.mkdir(path.dirname(output), { recursive: true }) : null))
         .then(() => processor.process(css, { ...postcssOptions, from: input, to: output }))
+        .then((result) => minifyCss(!!args['--minify'], result))
         .then((result) => {
           if (!output) {
             return process.stdout.write(result.css)
@@ -728,17 +777,6 @@ async function build() {
 
           return lazyAutoprefixer()
         })(),
-      args['--minify'] &&
-        (() => {
-          let options = { preset: ['default', { cssDeclarationSorter: false }] }
-
-          // Try to load a local `cssnano` version first
-          try {
-            return require('cssnano')
-          } catch {}
-
-          return lazyCssnano()(options)
-        })(),
     ].filter(Boolean)
 
     async function rebuild(config) {
@@ -785,6 +823,7 @@ async function build() {
             output ? fs.promises.mkdir(path.dirname(output), { recursive: true }) : null
           )
           .then(() => processor.process(css, { from: input, to: output }))
+          .then((result) => minifyCss(!!args['--minify'], result))
           .then(async (result) => {
             for (let message of result.messages) {
               if (message.type === 'dependency') {

src/util/negateValue.js

@@ -10,7 +10,15 @@ export default function (value) {
     return value.replace(/^[+-]?/, (sign) => (sign === '-' ? '' : '-'))
   }
 
-  if (value.includes('var(') || value.includes('calc(')) {
+  // What functions we support negating numeric values for
-    return `calc(${value} * -1)`
+  // var() isn't inherently a numeric function but we support it anyway
+  // The trigonometric functions are omitted because you'll need to use calc(…) with them _anyway_
+  // to produce generally useful results and that will be covered already
+  let numericFunctions = ['var', 'calc', 'min', 'max', 'clamp']
+
+  for (const fn of numericFunctions) {
+    if (value.includes(`${fn}(`)) {
+      return `calc(${value} * -1)`
+    }
   }
 }

tests/negative-prefix.test.js

@@ -146,6 +146,42 @@ test('a value that includes a calc', () => {
   })
 })
 
+test('a value that includes min/max/clamp functions', () => {
+  let config = {
+    content: [{ raw: html`<div class="mt-min -mt-min mt-max -mt-max mt-clamp -mt-clamp"></div>` }],
+    theme: {
+      margin: {
+        'min': 'min(100vmin, 3rem)',
+        'max': 'max(100vmax, 3rem)',
+        'clamp': 'clamp(1rem, 100vh, 3rem)',
+      },
+    },
+  }
+
+  return run('@tailwind utilities', config).then((result) => {
+    return expect(result.css).toMatchCss(css`
+      .mt-min {
+        margin-top: min(100vmin, 3rem);
+      }
+      .-mt-min {
+        margin-top: calc(min(100vmin, 3rem) * -1);
+      }
+      .mt-max {
+        margin-top: max(100vmax, 3rem);
+      }
+      .-mt-max {
+        margin-top: calc(max(100vmax, 3rem) * -1);
+      }
+      .mt-clamp {
+        margin-top: clamp(1rem, 100vh, 3rem);
+      }
+      .-mt-clamp {
+        margin-top: calc(clamp(1rem, 100vh, 3rem) * -1);
+      }
+    `)
+  })
+})
+
 test('a keyword value', () => {
   let config = {
     content: [{ raw: html`<div class="-mt-auto mt-auto"></div>` }],