wasm-pack build fails for Game of Life tutorial due to known issue

[huppmann]

wasm-pack's optimizer fails because of the export of a mutable global:

[INFO]: Optimizing wasm binaries with `wasm-opt`...
[wasm-validator error in module] unexpected true: Exported global cannot be mutable, on 
global$0

The issue is reported here.

I worked around by following the suggestion to add

[package.metadata.wasm-pack.profile.release]
wasm-opt = ["-Oz", "--enable-mutable-globals"]

to Cargo.toml.

Don't know if this is a gotcha you'd want to point out in the tutorial. (I ran into it here.). Otherwise, presume you can close and a web search will maybe land people here.

[clemens-tolboom]

Please don't shorten your links

• https://github.com/rustwasm/wasm-pack/issues/886
• https://github.com/rustwasm/wasm-pack/issues/886#issuecomment-667669802
• https://github.com/rustwasm/book/blame/a3a0b254928634237aeeb0f8732fb8fdbad0e9cb/src/game-of-life/implementing.md#L315

Longer give more context :-)