Pete Bacon Darwin da6ed1562e fix(compiler): strip scoped selectors from @font-face rules (#41815)
`@font-face` rules cannot contain nested selectors. Nor can they be
nested under a selector. Normally this would be a syntax error by the
author of the styles. But in some rare cases, such as importing styles
from a library, and applying `:host ::ng-deep` to the imported styles,
we can end up with broken css if the imported styles happen to contain
`@font-face` rules.

This commit works around this problem by sanitizing such cases (erasing
any scoping selectors) during emulated ShadowDOM encapsulation style
processing.

Fixes #41751

PR Close #41815
2021-04-27 09:12:28 -07:00
2020-11-18 11:11:41 -08:00
2021-04-14 09:40:17 -07:00
2021-04-26 12:06:48 -07:00

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