Function is_valid_name_codepoint

src/tokenizer.rs:337–344

(code_point: char, first: bool)

// Ref: https://wicg.github.io/urlpattern/#is-a-valid-name-code-point
#[inline]
pub(crate) fn is_valid_name_codepoint(code_point: char, first: bool) -> bool {
  if first {
    ID_START.contains(code_point) || matches!(code_point, '$' | '_')
  } else {
    ID_CONTINUE.contains(code_point)
      || matches!(code_point, '$' | '\u{200C}' | '\u{200D}')
  }
}