ts-cast/esm/engine/nullable.js

Runtime typechecking

import { withName } from '../helpers/names';
import { throwTypeError } from './throw-type-error';
export const nullable = (caster) => withName((value, context, reportError = throwTypeError) => (value !== null
    ? caster(value, context, reportError)
    : null), `${caster.name} | null`);