[pull] main from facebook:main #93
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
![pull[bot]](https://avatars.githubusercontent.com/in/12910?s=60&v=4){kind=small}
Corresponding Parcel PR: parcel-bundler/parcel#10073 Parcel avoids [cascading cache invalidation](https://philipwalton.com/articles/cascading-cache-invalidation/) by injecting a bundle manifest containing a mapping of stable bundle ids to hashed URLs. When using an HTML entry point, this is done (as of the above PR) via a native import map. This means that if a bundle's hash changes, only that bundle will be invalidated (plus the HTML itself which typically has a short caching policy), not any other bundles that reference it. For RSCs, we cannot currently use native import maps because of client side navigations, where a new HTML file is not requested. Eventually, multiple `<script type="importmap">` elements will be supported (whatwg/html#10528) ([coming Chrome 133](https://chromestatus.com/feature/5121916248260608)), at which point React could potentially inject them. In the meantime, I've added some APIs to Parcel to polyfill this. With this change, an import map can be sent along with a client reference, containing a mapping for any dynamic imports and URL dependencies (e.g. images) that are referenced by the JS bundles. On the client, the import map is extended with these new mappings prior to executing the referenced bundles. This preserves the caching advantages described above while supporting client navigations.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
See Commits and Changes for more details.
Created by
pull[bot] (v2.0.0-alpha.1)
Can you help keep this open source service alive? 💖 Please sponsor : )