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WebAssembly cross-origin module sharing

Category
WebAssembly
Type
Feature removal
Status
Enabled by default (Chrome 95)
Intent stage
Prepare to ship

Summary

WebAssembly module sharing between cross-origin but same-site environments will be deprecated to allow agent clusters to be scoped to origins long term. This is a WebAssembly spec change, which has an impact on the platform as well. Therefore this deprecation is the first step to deprecate document.domain

Motivation

WebAssembly module sharing between cross-origin but same-site environments will be deprecated to allow agent clusters to be scoped to origins long term. This is a WebAssembly spec change, which has an impact on the platform as well.

Standards & signals

Explainers: In the long run this will help to isolate sites based on the origin instead of the site https://github.com/WICG/origin-agent-cluster#how-it-works https://github.com/mikewest/deprecating-document-domain

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