error - bool is not defined

[oreporan]

Uncaught ReferenceError: bool is not defined
    at Object../src/components/Batch/index.js (universalModuleDefinition?2436:1)
    at d (universalModuleDefinition?2436:1)
    at Object.2 (universalModuleDefinition?2436:1)
    at d (universalModuleDefinition?2436:1)
    at ./src/components/Batch/index.js (universalModuleDefinition?2436:1)
    at eval (universalModuleDefinition?2436:1)
    at eval (universalModuleDefinition?2436:1)
    at eval (universalModuleDefinition?2436:1)
    at Object.../../node_modules/react-batch/lib/Batch.js (main.js:17955)
    at __webpack_require__ (main.js:773)

code:

import Batch from 'react-batch';


  <Batch
      flushCount={10}
      debug={false}
      flushInterval={150}
      count={this.props.items.length}
      render={() => buildConversationItems({
        ...this.props
    })}
       />

[WalterOkumu]

Is there any update on this error? Or has the project been abandoned? Any alternatives to rendering a list the same way?