wit-bindgen-cli 0.57.1

CLI tool to generate bindings for WIT documents and the component model. 
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package test:list-in-variant;

interface to-test {
  list-in-option: func(data: option<list<string>>) -> string;

  variant payload-or-empty {
    empty,
    with-data(list<string>),
  }
  list-in-variant: func(data: payload-or-empty) -> string;

  list-in-result: func(data: result<list<string>, string>) -> string;

  record summary {
    count: u32,
    label: string,
  }
  list-in-option-with-return: func(data: option<list<string>>) -> summary;

  top-level-list: func(items: list<string>) -> string;
}

world test {
  export to-test;
}

world runner {
  import to-test;

  export run: func();
}