ErrorBoundary Class — react Architecture

Source Code

packages/react-devtools-shared/src/devtools/views/ErrorBoundary/ErrorBoundary.js lines 56–96

export default class ErrorBoundary extends Component<Props, State> {
  state: State = InitialState;

  static getDerivedStateFromError(error: any): {
    callStack: string | null,
    errorMessage: string | null,
    hasError: boolean,
    isTimeout: boolean,
    isUnknownHookError: boolean,
    isUnsupportedBridgeOperationError: boolean,
    isUserError: boolean,
  } {
    const errorMessage =
      typeof error === 'object' &&
      error !== null &&
      typeof error.message === 'string'
        ? error.message
        : null;

    const isTimeout = error instanceof TimeoutError;
    const isUserError = error instanceof UserError;
    const isUnknownHookError = error instanceof UnknownHookError;
    const isUnsupportedBridgeOperationError =
      error instanceof UnsupportedBridgeOperationError;

    const callStack =
      typeof error === 'object' &&
      error !== null &&
      typeof error.stack === 'string'
        ? error.stack.split('\n').slice(1).join('\n')
        : null;

    return {
      callStack,
      errorMessage,
      hasError: true,
      isUnsupportedBridgeOperationError,
      isUnknownHookError,
      isTimeout,
      isUserError,
    };