@segment/analytics-next/src/test-helpers/helpers.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.

import { sleep } from '@segment/analytics-core'

export const waitForCondition = async (
  condition: () => boolean,
  timeout = 1000
): Promise<void> => {
  const start = Date.now()
  while (!condition()) {
    if (Date.now() - start > timeout) {
      throw new Error(`Timeout of ${timeout}ms exceeded!`)
    }
    await sleep(10)
  }
}