Execute async functions in series

sequential.js

/**
 * Execute an array of async functions in series
 */
const sequential = async fns => {
  const AsyncFunction = (async () => {}).constructor

  // Use "some" rather than "every" here to abort faster
  if (!fns.some(fn => fn instanceof AsyncFunction)) {
    throw new TypeError('`fns` argument should be an array of Async functions')
  }

  const responses = []
  for (const fn of fns) {
    const response = await fn()
    responses.push(response)
  }

  return responses
}