Function printErrorsAndWarnings

packages/react-devtools-shared/src/devtools/utils.js:120–127

(element: Element)

  }

  function printErrorsAndWarnings(element: Element): string {
    const {errorCount, warningCount} =
      store.getErrorAndWarningCountForElementID(element.id);
    if (errorCount === 0 && warningCount === 0) {
      return '';
    }
    return ` ${errorCount > 0 ? '✕' : ''}${warningCount > 0 ? '⚠' : ''}`;
  }

  const ownerFlatTree = state !== null ? state.ownerFlatTree : null;
  if (ownerFlatTree !== null) {