Make sure errors are always displayed when watching for changes (#9810)

* Make sure errors are always displayed when watching for changes

* Update changelog

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fix watching of files on Linux when renames are involved ([#9796](https://github.com/tailwindlabs/tailwindcss/pull/9796))
+- Make sure errors are always displayed when watching for changes ([#9810](https://github.com/tailwindlabs/tailwindcss/pull/9810))
 
 ## [3.2.3] - 2022-11-09
 

src/cli/build/plugin.js

@@ -364,6 +364,23 @@ export async function createProcessor(args, cliConfigPath) {
         console.error()
         console.error('Done in', (end - start) / BigInt(1e6) + 'ms.')
       })
+      .then(
+        () => {},
+        (err) => {
+          // TODO: If an initial build fails we can't easily pick up any PostCSS dependencies
+          // that were collected before the error occurred
+          // The result is not stored on the error so we have to store it externally
+          // and pull the messages off of it here somehow
+
+          // This results in a less than ideal DX because the watcher will not pick up
+          // changes to imported CSS if one of them caused an error during the initial build
+          // If you fix it and then save the main CSS file so there's no error
+          // The watcher will start watching the imported CSS files and will be
+          // resilient to future errors.
+
+          console.error(err)
+        }
+      )
   }
 
   /**