Support purge: false, add more info to console warning

Author: adamwathan

__tests__/purgeUnusedStyles.test.js

@@ -173,6 +173,30 @@ test('does not purge if explicitly disabled', () => {
     })
 })
 
+test('does not purge if purge is simply false', () => {
+  const OLD_NODE_ENV = process.env.NODE_ENV
+  process.env.NODE_ENV = 'production'
+  const inputPath = path.resolve(`${__dirname}/fixtures/tailwind-input.css`)
+  const input = fs.readFileSync(inputPath, 'utf8')
+
+  return postcss([
+    tailwind({
+      ...defaultConfig,
+      purge: false,
+    }),
+  ])
+    .process(input, { from: inputPath })
+    .then(result => {
+      process.env.NODE_ENV = OLD_NODE_ENV
+      const expected = fs.readFileSync(
+        path.resolve(`${__dirname}/fixtures/tailwind-output.css`),
+        'utf8'
+      )
+
+      expect(result.css).toBe(expected)
+    })
+})
+
 test('purges outside of production if explicitly enabled', () => {
   const OLD_NODE_ENV = process.env.NODE_ENV
   process.env.NODE_ENV = 'development'

src/cli/emoji.js

@@ -5,3 +5,4 @@ export const no = get('no_entry_sign')
 export const go = get('rocket')
 export const pack = get('package')
 export const disk = get('floppy_disk')
+export const warning = get('warning')

src/lib/purgeUnusedStyles.js

@@ -1,6 +1,9 @@
 import _ from 'lodash'
 import postcss from 'postcss'
 import purgecss from '@fullhuman/postcss-purgecss'
+import chalk from 'chalk'
+import { log } from '../cli/utils'
+import * as emoji from '../cli/emoji'
 
 function removeTailwindComments(css) {
   css.walkComments(comment => {
@@ -23,7 +26,7 @@ export default function purgeUnusedUtilities(config) {
   const purgeEnabled = _.get(
     config,
     'purge.enabled',
-    config.purge !== undefined && process.env.NODE_ENV === 'production'
+    config.purge !== false && config.purge !== undefined && process.env.NODE_ENV === 'production'
   )
 
   if (!purgeEnabled) {
@@ -32,7 +35,9 @@ export default function purgeUnusedUtilities(config) {
 
   // Skip if `purge: []` since that's part of the default config
   if (Array.isArray(config.purge) && config.purge.length === 0) {
-    console.log('Skipping purge because no template paths provided...')
+    log()
+    log(emoji.warning, chalk.yellow(' Skipping purge because no template paths provided.'))
+    log(chalk.white('   To silence this warning, set `purge: false` in your Tailwind config file.'))
     return removeTailwindComments
   }