fix(serve): improve error message when port is in use (#4167)

angular · Jan 24, 2017 · 75e83a4 · 75e83a4
1 parent 23c6c53
commit 75e83a4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/angular-cli/commands/serve.run.ts b/packages/angular-cli/commands/serve.run.ts
@@ -50,7 +50,9 @@ function checkExpressPort(commandOptions: ServeTaskOptions) {
     .then((foundPort: number) => {
 
       if (commandOptions.port !== foundPort && commandOptions.port !== 0) {
-        throw new SilentError(`Port ${commandOptions.port} is already in use.`);
+        throw new SilentError(
+          `Port ${commandOptions.port} is already in use. Use '--port' to specify a different port.`
+        );
       }
 
       // otherwise, our found port is good