startAsyncTransitionTimer() — react Function Reference

Architecture documentation for the startAsyncTransitionTimer() function in ReactProfilerTimer.js from the react codebase.

Function javascript BabelCompiler Validation called by 1

Entity Profile

BabelCompiler→ Validation→ startAsyncTransitionTimer() — react Function Reference

Dependency Diagram

graph TD
  615218a1_42bf_c3aa_c0fa_ff6fadfb674e["startAsyncTransitionTimer()"]
  e054b9c7_41f1_c7f7_97bb_98b6a445e94b["ReactProfilerTimer.js"]
  615218a1_42bf_c3aa_c0fa_ff6fadfb674e -->|defined in| e054b9c7_41f1_c7f7_97bb_98b6a445e94b
  5016b59c_36d5_c0b9_3051_0db05af2c0f7["ReactSharedInternals()"]
  5016b59c_36d5_c0b9_3051_0db05af2c0f7 -->|calls| 615218a1_42bf_c3aa_c0fa_ff6fadfb674e
  style 615218a1_42bf_c3aa_c0fa_ff6fadfb674e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-reconciler/src/ReactProfilerTimer.js lines 300–317

export function startAsyncTransitionTimer(): void {
  if (!enableProfilerTimer || !enableComponentPerformanceTrack) {
    return;
  }
  if (transitionStartTime < 0 && transitionUpdateTime < 0) {
    transitionStartTime = now();
    const newEventTime = resolveEventTimeStamp();
    const newEventType = resolveEventType();
    if (
      newEventTime !== transitionEventRepeatTime ||
      newEventType !== transitionEventType
    ) {
      transitionEventRepeatTime = -1.1;
    }
    transitionEventTime = newEventTime;
    transitionEventType = newEventType;
  }
}