def unit.emit
import bend-toon-codec@0.1.0.0/src/text.bend as Textimport Base
218# A finished \uXXXX value: a surrogate is refused (section 7.1).
219def unit.emit(+n: U32) -> Ek:
220 ek.pick(U32.is_ge(n, 55296) && U32.is_le(n, 57343), EkErr{"surrogate code point in \\u escape"}, EkChar{n})