Fix @tailwindcss/line-clamp warning (#10919)

* WIP

* Move warning to validateConfig

This only happens in setupTrackingContext outside of resolveConfig

* Use original dynamic require approach in `validateConfig`

The important thing is that this happens in Node-land only. It is outside of `resolveConfig` which is public and importable into user projects. That is the scenario that breaks because of static import hoisting.

* Don’t reference process when it might be undefined

The `resolveConfig` dep path is public which should not reference process. However, we have some behavior that changes based on env vars so we need to conditionalize it instead.

* Update changelog

* Formatting

* More formatting

* Update changelog

---------

Co-authored-by: Robin Malfait <malfait.robin@gmail.com>
Co-authored-by: Jonathan Reinink <jonathan@reinink.ca>

CHANGELOG.md

@@ -12,7 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Try resolving `config.default` before `config` to ensure the config file is resolved correctly ([#10898](https://github.com/tailwindlabs/tailwindcss/pull/10898))
 - Pull pseudo elements outside of `:is` and `:has` when using `@apply` ([#10903](https://github.com/tailwindlabs/tailwindcss/pull/10903))
 - Update the types for the `safelist` config ([#10901](https://github.com/tailwindlabs/tailwindcss/pull/10901))
-- Drop `@tailwindcss/line-clamp` warning ([#10915](https://github.com/tailwindlabs/tailwindcss/pull/10915))
+- Fix `@tailwindcss/line-clamp` warning ([#10915](https://github.com/tailwindlabs/tailwindcss/pull/10915), [#10919](https://github.com/tailwindlabs/tailwindcss/pull/10919))
+- Fix `process` is not defined error ([#10919](https://github.com/tailwindlabs/tailwindcss/pull/10919))
 
 ## [3.3.0] - 2023-03-27
 

src/lib/sharedState.js

@@ -1,12 +1,21 @@
 import pkg from '../../package.json'
 let OXIDE_DEFAULT_ENABLED = pkg.tailwindcss.engine === 'oxide'
 
-export const env = {
-  NODE_ENV: process.env.NODE_ENV,
-  DEBUG: resolveDebug(process.env.DEBUG),
-  ENGINE: pkg.tailwindcss.engine,
-  OXIDE: resolveBoolean(process.env.OXIDE, OXIDE_DEFAULT_ENABLED),
-}
+export const env =
+  typeof process !== 'undefined'
+    ? {
+        NODE_ENV: process.env.NODE_ENV,
+        DEBUG: resolveDebug(process.env.DEBUG),
+        ENGINE: pkg.tailwindcss.engine,
+        OXIDE: resolveBoolean(process.env.OXIDE, OXIDE_DEFAULT_ENABLED),
+      }
+    : {
+        NODE_ENV: 'production',
+        DEBUG: false,
+        ENGINE: pkg.tailwindcss.engine,
+        OXIDE: OXIDE_DEFAULT_ENABLED,
+      }
+
 export const contextMap = new Map()
 export const configContextMap = new Map()
 export const contextSourcesMap = new Map()

src/util/validateConfig.js

@@ -9,5 +9,18 @@ export function validateConfig(config) {
     ])
   }
 
+  // Warn if the line-clamp plugin is installed
+  try {
+    let plugin = require('@tailwindcss/line-clamp')
+    if (config.plugins.includes(plugin)) {
+      log.warn('line-clamp-in-core', [
+        'As of Tailwind CSS v3.3, the `@tailwindcss/line-clamp` plugin is now included by default.',
+        'Remove it from the `plugins` array in your configuration to eliminate this warning.',
+      ])
+
+      config.plugins = config.plugins.filter((p) => p !== plugin)
+    }
+  } catch {}
+
   return config
 }