I tried to make \'Hello World\' in Rust using this tutorial, but the build command is a bit verbose:
cargo +nightly build --target wasm32-unknown-unknown --relea
You could use a Cargo configuration file to specify a default target-triple for your project. In your project's root, create a .cargo directory and a config file in it with the following contents:
[build]
target = "wasm32-unknown-unknown"
As listed in the Cargo documentation, you can create a .cargo/config and specify the target:
[build]
target = "my-custom-target"