{"ast_node_type":"variable","tokens":[{"end":45,"kind":"keyword","start":0,"text":"let"}]}
                        let builtin_types = [
                        // https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-compression).
                            "v", "w", "b", "c", "a", "h", "s", "t", "i", "j", "l", "m", "x", "y",