Function positive

src/patterns.ts:1035–1036

()

 *   .with(P.number.positive(), () => 'number > 0')
 */
const positive = <input>(): GuardExcludeP<input, number, never> =>
  when((value) => isNumber(value) && value > 0);

/**
 * `P.number.negative()` matches **negative** numbers.