Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Rules skipped due to selector errors: legend+* -> Cannot read property 'type' of undefined

See original GitHub issue

Bug description:

When building angular using the production configuration, the step Generating index html... produces following warning: 1 rules skipped due to selector errors: legend+* -> Cannot read property 'type' of undefined

See this screenshot:

Reproduction Steps

In Terminal:

ng new testproject --style scss
cd testproject
ng add @ng-bootstrap/ng-bootstrap
npm run build

Versions of Angular, ng-bootstrap and Bootstrap:

Angular: 13.3.0 - 13.3.2

ng-bootstrap: 12.0.2

Bootstrap: 5.1.3

Issue Analytics

State:
Created a year ago
Reactions:20
Comments:57 (1 by maintainers)

Top GitHub Comments

17reactions

hhubikcommented, May 20, 2022

Had the same issue. Managed to solve it by replacing "optimization": true in angular.json with

"optimization": {
  "scripts": true,
  "styles": {
    "minify": true,
    "inlineCritical": false
  }

9reactions

ImmuneGitcommented, Apr 22, 2022

I get even two messages:

Warning: 2 rules skipped due to selector errors:
  legend+* -> Cannot read properties of undefined (reading 'type')
  legend + * -> Cannot read properties of undefined (reading 'type')

It’s because you installed bootstrap and ng-bootstrap

Top Results From Across the Web

Warning: 1 rules skipped due to selector errors: legend + ...

In the angular.json file write the following code, under "production". "optimization": { "scripts": true, "styles": { "minify": true, ...

Angular Universal 'Rules skipped due to selector errors' - Reddit

... error when running ssr: 2 rules skipped due to selector errors: legend+* -> Cannot read properties of undefined (reading 'type').

legend * -> cannot read properties of undefined (reading 'type')

This error occurs when attempting to read a property of an undefined variable. It typically means that the variable in question has not...

MDB4 with Angular12 css skipped rules

8 rules skipped due to selector errors: ... Topic: MDB4 with Angular12 css skipped rules ... Cannot read properties of undefined (reading 'type') ......

Problem running Build command: npm run prerender - Support

11:48:03 PM: 2 rules skipped due to selector errors: 11:48:03 PM: legend+* -> Cannot read properties of undefined (reading 'type') 11:48:03 PM: .table>>>* ......