telexed ~ c / 8f344e53-8e0radar:40 · otherLIVE
← back
NO.
#8f344e53
Topic
OTHER
Source
GeekNews
Published
2026-05-21 04:11:10
Importance
★ 4/10 — radar 40
Firefox 148 Starts Turning Off `asm.js` Optimization
FIG-0831:1

Firefox 148 Starts Turning Off `asm.js` Optimization

Legacy asm.js still runs, but loses its fast path in Firefox. Old web games and compute-heavy demos should move to WebAssembly; new products can ignore this.

[ KEY POINTS ]
  1. From Firefox 148, SpiderMonkey disables asm.js optimization by default, with removal planned later.
  2. Compatibility remains because asm.js is a JavaScript subset; the breakage risk is performance, not execution.
  3. Existing asm.js assets should be migrated to WebAssembly. For new builds, do not target asm.js.
Originalnews.hada.io/topic?id=29732Read original →

// related