wit-bindgen-cli 0.57.0

CLI tool to generate bindings for WIT documents and the component model. 
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package foo:foo;

world go-params {
    import error-code: func(err: u32) -> option<u32>;
    import error-code2: func(ret: u32) -> option<u32>;
    import error-code3: func(err: u32, ret: option<u32>) -> result<u32>;
    import error-code4: func() -> result<u32>;
}