Remove old JS compiler page stubs (#7143)

Author: parlough

firebase.json

@@ -421,9 +421,10 @@
       { "source": "/tools/dart-pub", "destination": "/tools/pub/cmd", "type": 301 },
       { "source": "/tools/dart-vm", "destination": "/tools/dart-run", "type": 301 },
       { "source": "/tools/dart2aot", "destination": "/tools/dart-compile", "type": 301 },
+      { "source": "/tools/dart2js", "destination": "/tools/dart-compile#js", "type": 301 },
       { "source": "/tools/dart2native", "destination": "/tools/dart-compile", "type": 301 },
       { "source": "/tools/dartanalyzer", "destination": "/tools/dart-analyze", "type": 301 },
-      { "source": "/tools/dartdevc/**", "destination": "/tools/dartdevc", "type": 301 },
+      { "source": "/tools/dartdevc{,/**}", "destination": "/tools/webdev#serve", "type": 301 },
       { "source": "/tools/dartdoc", "destination": "/tools/dart-doc", "type": 301 },
       { "source": "/tools/dartdocgen{,/**}", "destination": "/tools/dart-doc", "type": 301 },
       { "source": "/tools/dartfix", "destination": "/tools/dart-fix", "type": 301 },

src/content/resources/whats-new.md

@@ -938,7 +938,7 @@ we made the following changes to this site:
   * Documented for the deprecation and planned removal
     of the `dart2js` and `dartdevc` standalone tools.
   * Consolidated and clarified the documentation
-    of [dart2js][] and [dartdevc][]
+    of `dart2js` and `dartdevc`
     as the underlying compilers of tools like
     [`dart compile js`][] and [`webdev`][].
 * Increased documentation coverage of null safety:
@@ -984,8 +984,6 @@ we made the following changes to this site:
 [diagnostic messages]: /tools/diagnostic-messages
 [linter rules]: /tools/linter-rules
 
-[dart2js]: /tools/dart2js
-[dartdevc]: /tools/dartdevc
 [`webdev`]: /tools/webdev
 
 [Other operators]: /language/operators#other-operators

src/content/tools/dart-compile.md

@@ -372,12 +372,13 @@ The `js` subcommand compiles Dart code to deployable JavaScript.
 
 :::note
 Use the [`webdev` tool][webdev] rather than running the 
-Dart-to-JavaScript compiler.
+Dart-to-JavaScript compiler directly.
 
-* The [`webdev build`][] command, by default, produces minified, deployable JavaScript.
+* The [`webdev build`][] command, by default,
+  produces minified, deployable JavaScript.
 
-* The [`webdev serve`][] command, by default, produces JavaScript
-  modules for running and debugging during development.
+* The [`webdev serve`][] command, by default,
+  produces JavaScript modules for running and debugging during development.
 :::
 
 {% render 'tools/dart-compile-js-options.md', site: site %}