Function catchError

test/processor.test.ts:36–43

(cb: () => Promise<any>)

}

async function catchError(cb: () => Promise<any>): Promise<Error> {
  try {
    await cb()
  } catch (e) {
    if (e instanceof Error) return e
  }
  throw new Error('Error was not thrown')
}

let beforeFix = new Processor([
  (root: Root) => {