Function isAlreadyRendering

packages/react-reconciler/src/ReactFiberWorkLoop.js:1865–1869

()

}

export function isAlreadyRendering(): boolean {
  // Used by the renderer to print a warning if certain APIs are called from
  // the wrong context, and for profiling warnings.
  return (executionContext & (RenderContext | CommitContext)) !== NoContext;
}

export function isInvalidExecutionContextForEventFunction(): boolean {
  // Used to throw if certain APIs are called from the wrong context.