Is There a Replacement for the Deprecated ::ng-deep Selector in Angular Styling?

Use of ::ng-deep Selector in Angular Styling

In Angular, the ::ng-deep selector is commonly used to penetrate the Shadow DOM and style nested component elements. However, it is currently deprecated.

Alternatives to ::ng-deep

Despite the deprecation of ::ng-deep, there is not yet a viable replacement outlined by the Angular team. This is due to the absence of an agreed-upon specification from the W3C for selectors that are capable of traversing Shadow DOM boundaries.

Current Recommendations

Until an alternative solution is officially released, the Angular team advises to continue using ::ng-deep and its alternatives when necessary. The deprecation status serves as a heads-up for the eventual removal of this selector once a suitable replacement becomes available.

Pending W3C Proposal

The CSS Working Group (CSSWG) is actively working on a proposal that aims to address the need for selectors that can target elements within Shadow DOM trees effectively. This proposal, titled "CSS Scoping Level 1," includes a set of comprehensive selectors that are designed for this purpose.

Once this proposal is finalized and implemented in browsers, it is likely to form the basis for any future replacement of ::ng-deep in Angular. Until then, the usage of ::ng-deep and its alternatives remains the recommended practice for styling nested component elements in Angular applications.

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