Function discriminatorStartsWith

packages/effect/src/internal/matcher.ts:370–395

(field: D)

/** @internal */
export const discriminatorStartsWith = <D extends string>(field: D) =>
<
  R,
  P extends string,
  Ret,
  Fn extends (_: Extract<R, Record<D, `${P}${string}`>>) => Ret
>(
  pattern: P,
  f: Fn
) => {
  const pred = (_: any) => _ != null && typeof _[field] === "string" && _[field].startsWith(pattern)

  return <I, F, A, Pr>(
    self: Matcher<I, F, R, A, Pr, Ret>
  ): Matcher<
    I,
    Types.AddWithout<F, Extract<R, Record<D, `${P}${string}`>>>,
    Types.ApplyFilters<
      I,
      Types.AddWithout<F, Extract<R, Record<D, `${P}${string}`>>>
    >,
    A | ReturnType<Fn>,
    Pr,
    Ret
  > => (self as any).add(makeWhen(pred, f as any)) as any
}

/** @internal */
export const discriminators = <D extends string>(field: D) =>