CR Request for WebAssembly JS API - wasm-js-api

[dschuff]

Document title, URLs, estimated publication date

WebAssembly JavaScript Interface
https://www.w3.org/TR/wasm-js-api-2/
Estimated publication date: ASAP

Abstract

This document provides an explicit JavaScript API for interacting with WebAssembly.

This is part of a collection of related documents: the Core WebAssembly Specification, the WebAssembly JS Interface, and the WebAssembly Web API.

Status

WD: existing status can be seen in the doc at the link above
Status for all the various states (including what the CR status will be) can be found in our Bikeshed boilerplate
files: https://github.com/speced/bikeshed-boilerplate/tree/main/boilerplate/wasm

Link to group's decision to request transition

https://github.com/WebAssembly/meetings/blob/main/main/2024/WG-06-12.md

Changes

Changes to the core spec since 1.0 listed at https://www.w3.org/TR/wasm-core-2/#change-history
and include following extension proposals:
Sign extension instructions; Non-trapping float-to-int conversions; multi-value block types and function results;
reference types, table instructions, and multiple tables; bulk memory and table instructions; SIMD vector instructions.

Most of these do not affect the JS API directly; however with the reference type update JS object may be passed
into wasm as externref references, and multiple tables may now be imported/exported to JS.

Requirements satisfied

Dependencies met (or not)

Dependencies are unlikely to change

Wide Review

[TODO: horizontal review?]
Issues are tracked at https://github.com/WebAssembly/spec/issues
Email announcement at https://lists.w3.org/Archives/Public/public-webassembly/2024Jul/0000.html

Issues addressed

Issues are tracked at https://github.com/WebAssembly/spec/issues

Formal Objections

None raised

Implementation

All of these features have been implemented in all 3 major browser engines. A full feature matrix including version
information can be found at https://webassembly.org/features/

Patent disclosures

[TODO: link to IPP]

[dschuff]

/cc @sideshowbarker @lukewagner @rossberg

[plehegar]

See #651 (comment)