Better error handling for removed experimental features

tailwindlabs · Oct 4, 2020 · 629737f · 629737f
1 parent f3a4f22
commit 629737f
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Showing 2 changed files with 28 additions and 3 deletions.
diff --git a/src/featureFlags.js b/src/featureFlags.js
@@ -5,7 +5,6 @@ import log from './util/log'
 const featureFlags = {
   future: ['removeDeprecatedGapUtilities', 'purgeLayersByDefault'],
   experimental: [
-    'uniformColorPalette',
     'extendedSpacingScale',
     'defaultLineHeights',
     'extendedFontSizeScale',
@@ -15,6 +14,15 @@ const featureFlags = {
     'additionalBreakpoint',
     'redesignedColorPalette',
   ],
+  removed: {
+    uniformColorPalette: [
+      `The ${chalk.red(
+        'uniformColorPalette'
+      )} experiment has been removed in favor of a different color palette.`,
+      'If you would like to continue using this palette, you can copy it manually from here:',
+      'https://github.com/tailwindlabs/tailwindcss/blob/753925f72c61980fa6d7ba398b7e2a1ba0e4b438/src/flagged/uniformColorPalette.js',
+    ],
+  },
 }
 
 export function flagEnabled(config, flag) {
@@ -47,7 +55,26 @@ function futureFlagsAvailable(config) {
   return featureFlags.future.filter(flag => !_.has(config, ['future', flag]))
 }
 
+function removedFlagsEnabled(config) {
+  if (config.experimental === 'all') {
+    return false
+  }
+
+  return Object.keys(_.get(config, 'experimental', {})).filter(
+    flag => Object.keys(featureFlags.removed).includes(flag) && config.experimental[flag]
+  )
+}
+
 export function issueFlagNotices(config) {
+  if (removedFlagsEnabled(config).length > 0) {
+    removedFlagsEnabled(config).forEach(flag => {
+      log.error(featureFlags.removed[flag])
+    })
+
+    console.warn('')
+    throw new Error('Enabled experimental features have been removed.')
+  }
+
   if (process.env.JEST_WORKER_ID !== undefined) {
     return
   }

diff --git a/src/util/getAllConfigs.js b/src/util/getAllConfigs.js
@@ -1,6 +1,5 @@
 import defaultConfig from '../../stubs/defaultConfig.stub.js'
 import { flagEnabled } from '../featureFlags'
-import uniformColorPalette from '../flagged/uniformColorPalette.js'
 import extendedSpacingScale from '../flagged/extendedSpacingScale.js'
 import defaultLineHeights from '../flagged/defaultLineHeights.js'
 import extendedFontSizeScale from '../flagged/extendedFontSizeScale.js'
@@ -12,7 +11,6 @@ import redesignedColorPalette from '../flagged/redesignedColorPalette'
 export default function getAllConfigs(config) {
   const configs = [defaultConfig]
   const features = {
-    uniformColorPalette,
     extendedSpacingScale,
     defaultLineHeights,
     extendedFontSizeScale,