Change the Rust code need to compile to Wasm

[milk-abc]

Hello, I have changed some Rust code and now need to recompile the WASM. Could you provide me with the basic WASM configuration and build instructions?

[milk-abc]

The reason I changed the Rust code is to fix an issue where a polyline offset turns a line-to-line join into a rounded join. I want the join to remain a straight line after offsetting