E0038: unclosed identifier escape sequence
Identifiers can contain Unicode escape sequences starting with \u. It is a
syntax error to write \u{ followed by hexadecimal digits without a closing
}:
let guitar\u{3604 = "\u{D83C}\u{";
To fix this error, write } to close the escape sequence.
let guitar\u{3604} = "\u{D83C}\u{DFB8}";
Introduced in quick-lint-js version 0.2.0.