wasm-pack/docs/src/quickstart.md

Quickstart

1. Install rust using rustup.
2. Install this tool.
3. Run wasm-pack new hello-wasm.
4. cd hello-wasm
5. Run wasm-pack build --target web.
6. This tool generates files in a pkg dir
7. Import it: import init, { greet } from "./pkg/hello_wasm.js", initialize it: await init(), and then use it: greet()
8. To publish to npm, run wasm-pack publish. You may need to login to the registry you want to publish to. You can login using wasm-pack login.