fix(js/scripts/build.sh): fix wasm init problem when run build in vite(#1393)

[ticky-xia]

Added sideEffects field to package.json update.

Closes #1393

[kylebarron]

Thanks! Can you provide some sort of reference that shows this is needed?

[ticky-xia]

https://learningwithmanjeet.com/what-tree-shaking-in-front-end-development/

[kylebarron]

I think we only want this to apply to the code in bundler/ and not in all three submodules.

If you run

wasm-pack build --out-dir tmp_build/node \
  --out-name index \
  --target nodejs

then the generated module does not have a .sideEffects field.

And if you build for the web endpoint,

wasm-pack build --out-dir tmp_build/esm \
  --out-name index \
  --target web

then the generated package.json only has "./snippets/*" in the side effects; index.js is not included in the sideEffects array.

So I think you need to set

.sideEffects: [
	"bundler/index.js",
	"bundler/snippets/*",
	"node/snippets/*"
]