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Document Firefox 152 WebAssembly JS-PI support #44329

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Document Firefox 152 WebAssembly JS-PI support #44329

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18 changes: 18 additions & 0 deletions files/en-us/mozilla/firefox/experimental_features/index.md
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Expand Up @@ -445,6 +445,24 @@ These give developers more flexibility when structuring and loading JavaScript m
- `dom.multiple_import_maps.enabled`
- : Set to `true` to enable.

## WebAssembly

### JavaScript Promise Integration

[WebAssembly JavaScript Promise Integration](https://github.com/WebAssembly/js-promise-integration) (JS-PI) allows WebAssembly applications to interoperate with JavaScript APIs that use {{jsxref("Promise")}} objects.
This lets WebAssembly code suspend while waiting for a JavaScript promise and resume when the promise settles.
([Firefox bug 2015877](https://bugzil.la/2015877)).

| Release channel | Version added | Enabled by default? |
| ----------------- | ------------- | ------------------- |
| Nightly | 152 | Yes |
| Developer Edition | - | - |
| Beta | - | - |
| Release | - | - |

- `javascript.options.wasm_js_promise_integration`
- : Set to `true` to enable.

## APIs

### Scoped custom element registries
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13 changes: 11 additions & 2 deletions files/en-us/mozilla/firefox/releases/152/index.md
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Expand Up @@ -75,7 +75,11 @@ Firefox 152 is the current [Beta version of Firefox](https://www.firefox.com/en-

<!-- #### Removals -->

<!-- ### WebAssembly -->
### WebAssembly

- [WebAssembly JavaScript Promise Integration](https://github.com/WebAssembly/js-promise-integration) (JS-PI) is now available in Nightly builds, where it is enabled by default.
This lets WebAssembly code suspend while waiting for JavaScript {{jsxref("Promise")}} objects and resume when the promises settle.
([Firefox bug 2015877](https://bugzil.la/2015877)).

<!-- #### Removals -->

Expand All @@ -99,10 +103,15 @@ Firefox 152 is the current [Beta version of Firefox](https://www.firefox.com/en-

## Experimental web features

These features are shipping in Firefox 152 but are disabled by default.
These features are shipping in Firefox 152 but are disabled by default unless otherwise noted.
To experiment with them, search for the appropriate preference on the `about:config` page and set it to `true`.
You can find more such features on the [Experimental features](/en-US/docs/Mozilla/Firefox/Experimental_features) page.

- **WebAssembly JavaScript Promise Integration (JS-PI)**: `javascript.options.wasm_js_promise_integration`

WebAssembly JavaScript Promise Integration is now available in Nightly builds, where it is enabled by default.
([Firefox bug 2015877](https://bugzil.la/2015877)).

- **Check if a media encoding/decoding configuration is supported for WebRTC**: `media.mediacapabilities.webrtc.enabled`

The `webrtc` type can now be passed as an option for [`MediaCapabilities.decodingInfo()`](/en-US/docs/Web/API/MediaCapabilities/decodingInfo#webrtc) and [`MediaCapabilities.encodingInfo()`](/en-US/docs/Web/API/MediaCapabilities/encodingInfo#webrtc) to check if an encoding/decoding configuration can be used for WebRTC.
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