Function setCause

packages/react/src/error.ts:17–34

(error: Error & { cause?: Error }, cause: Error)

 * Recurse through `error.cause` chain to set cause on an error.
 */
export function setCause(error: Error & { cause?: Error }, cause: Error): void {
  const seenErrors = new WeakSet();

  function recurse(error: Error & { cause?: Error }, cause: Error): void {
    // If we've already seen the error, there is a recursive loop somewhere in the error's
    // cause chain. Let's just bail out then to prevent a stack overflow.
    if (seenErrors.has(error)) {
      return;
    }
    if (error.cause) {
      seenErrors.add(error);
      return recurse(error.cause, cause);
    }
    error.cause = cause;
  }

  recurse(error, cause);
}

/**
 * Captures an error that was thrown by a React ErrorBoundary or React root.