@segment/analytics-next/src/lib/is-thenable.ts

Analytics Next (aka Analytics 2.0) is the latest version of Segment’s JavaScript SDK - enabling you to send your data to any tool without having to learn, test, or use a new API every time.

/**
 *  Check if  thenable
 *  (instanceof Promise doesn't respect realms)
 */
export const isThenable = (value: unknown): boolean =>
  typeof value === 'object' &&
  value !== null &&
  'then' in value &&
  typeof (value as any).then === 'function'