[Enhancement] Auto-apply `profile.release` → `profile.web` when using `bun run build`

[tomoyan596]

Hello from Japan! Simple Enhancement for Bun Users😊
Thank you very much.

Proposal: Make bun run build smarter

Discovery

• bun run build (and npm run build) requires profile.web in Cargo.toml
• profile.release settings are ignored
• This is correct — but unexpected for Bun users

Simple Fix
In the build script (Webpack or wasm-pack), copy:

[package.metadata.wasm-pack.profile.release]
# See https://github.com/rustwasm/wasm-pack/issues/886#issuecomment-667669802
wasm-opt = ["-Oz", "--enable-mutable-globals"]
 
[package.metadata.wasm-pack.profile.web]
wasm-opt = ["-Oz", "--enable-mutable-globals"]

[schungx]

Good idea. Can you open a PR?

[tomoyan596]

Hello! After investigating this issue (#25), I found that no changes are needed for the Rhai Playground.
Initially, I suspected bun was the cause, but since both bun and npm showed the same error, it was traced back to a wasm-pack bug (#1420).
It was challenging to isolate, and I apologize for the confusion.
I’ve submitted a fix via PR (drager/wasm-pack#1533), and the build now works correctly.
Note: PR #1533 has a failing test (linux-stable), likely a CI issue, which is under review.
I’d like to close this request as resolved.
Sorry for any inconvenience, and thanks for your understanding—I hope this helps the community! 😄