reluxscript 0.1.4

Write AST transformations once. Compile to Babel, SWC, and beyond.
Documentation 
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// Minimal test for needs_to_string: assigning string literal to Str field
// Reproduces super_kitchen_sink: impl block before visitor method
plugin NeedsToString {
    struct Foo {
        name: Str,
    }

    impl Foo {
        pub fn new(name: Str) -> Foo {
            Foo { name }
        }

        pub fn get_name(&self) -> Str {
            self.name.clone()
        }
    }

    struct State {
        output: Str,
        count: i32,
    }

    fn init() -> State {
        State { output: "", count: 0 }
    }

    pub fn visit_function_declaration(node: &FunctionDeclaration) {
        match node.return_type {
            Some(type_ann) => {
                match type_ann.type_annotation {
                    TSType::TSStringKeyword => {
                        self.state.output = "string";
                    }
                    _ => {}
                }
            }
            None => {}
        }
    }
}