Function isPromiseAwaitInternal

packages/react-server/src/ReactFlightServer.js:319–345

(url: string, functionName: string)

}

function isPromiseAwaitInternal(url: string, functionName: string): boolean {
  // Various internals of the JS VM can await internally on a Promise. If those are at
  // the top of the stack then we don't want to consider them as internal frames. The
  // true "await" conceptually is the thing that called the helper.
  // Ideally we'd also include common third party helpers for this.
  if (url === 'node:internal/async_hooks') {
    // Ignore the stack frames from the async hooks themselves.
    return true;
  }
  if (url !== '') {
    return false;
  }
  switch (functionName) {
    case 'Promise.then':
    case 'Promise.catch':
    case 'Promise.finally':
    case 'Function.reject':
    case 'Function.resolve':
    case 'Function.all':
    case 'Function.allSettled':
    case 'Function.race':
    case 'Function.try':
      return true;
    default:
      return false;
  }
}

export function isAwaitInUserspace(
  request: Request,