HTML escaper performance could be improved by adopting the same html escaping code as Svelte and Solid JS

[cgranttm]

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

platform-browser

Description

The html escape function provided in @angular/platform-browser is outperformed by newer takes on it from Solid JS and Svelte. packages\platform-browser\src\browser\transfer_state.ts

Proposed solution

Consider adopting the same method as Svelte for escaping html. The code can be found here: sveltejs/svelte#5701 Also here's a js bench comparing the two functions for store serialisation. I made a js bench comparing the old/new approach, it needs this gist to be in the setup data: https://gist.github.com/callumelgrant/dde6f54cd1544c1be5524a74b5365cd6 https://jsbench.me/uyl5xdwloa/1

Alternatives considered

It could be possible to make an even faster one than Svelte's.

[cgranttm]

I made a draft PR for this #46951.

[pkozlowski-opensource]

For more context, here is the article discussing the issue and improvements: https://levelup.gitconnected.com/how-we-wrote-the-fastest-javascript-ui-framework-again-db097ddd99b6

And here is a PR with the improvement itself in SolidJS: ryansolid/dom-expressions#27

[alan-agius4]

Closing as the escapeHtml method has been removed.