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Improve the `The pipe could not be found` error message

See original GitHub issue

Which @angular/* package(s) are relevant/releated to the feature request?

core

Description

Currently Angular throws the following error message at runtime when a pipe can not be found:

The pipe `AsyncPipe` could not be found!

However there is no information on which component has this problem, which makes debugging harder. We should consider adding component class name to the error message.

Issue Analytics

  • State:closed
  • Created 2 years ago
  • Reactions:11
  • Comments:23 (22 by maintainers)

github_iconTop GitHub Comments

1reaction
AndrewKushnircommented, Nov 9, 2021

@rohan-pednekar please see my comment to your PR: https://github.com/angular/angular/pull/44081#discussion_r743914851. Here is the change that should take care of the mentioned issue:

   if (tView.firstCreatePass) {
-    pipeDef = getPipeDef(pipeName, tView.pipeRegistry);
+    // The `getPipeDef` throws if a pipe with a given name is not found
+    // (so we use non-null assertion below).
+    pipeDef = getPipeDef(pipeName, tView.pipeRegistry)!;

1reaction
AndrewKushnircommented, Nov 4, 2021

I have tried formatting all the source code. But, I am seeing changes in many files that I haven’t even touched. I used the following command.

You could target changed files only using this command:

yarn ng-dev format changed

More info can be found at https://github.com/angular/angular/blob/master/docs/DEVELOPER.md#formatting-your-source-code.

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