feat(breaking): migrate Flow to TS; remove some deprecated functions and aliases

src/helpers/timers.ts

@@ -2,6 +2,8 @@
 /* globals jest */
 const globalObj = typeof window === 'undefined' ? global : window;
 
+// trigger pipeline
+
 // Currently this fn only supports jest timers, but it could support other test runners in the future.
 function runWithRealTimers<T>(callback: () => T): T {
   const fakeTimersType = getJestFakeTimersType();