Extended constant expressions (WebAssembly)

The i32.add, i32.sub, i32.mul, i64.add, i64.sub, and i64.mul operations extend constant expressions to include arithmetic.

Baseline Status: Achieved Widely Available on Sep 5, 2026 (Cross-browser Newly Available since Mar 5, 2024).

Desktop Browser Engine Support

Google Chrome

114

Supported

Mozilla Firefox

112

Supported

Apple Safari

17.4

Supported

Microsoft Edge

114

Supported

Mobile Browser Engine Support

Chrome Android

114

Firefox Android

112

Safari iOS

17.4

Specifications and References

MDN Browser Compat Data Keys: