How to use the cozy-device-helper.isMobile function in cozy-device-helper

let onClick = null
    const usingNativeApp = isMobileApp()
    const appInfo = NATIVE_APP_INFOS[slug]
    if (usingNativeApp) {
      if (nativeAppIsAvailable) {
        // If we are on the native app and the other native app is available,
        // we open the native app
        onClick = AppLinker.openNativeFromNative.bind(this, props)
        href = '#'
      } else {
        // If we are on a native app, but the other native app is not available
        // we open the web link, this is done by the href prop. We still
        // have to call the prop callback
        onClick = AppLinker.openWeb.bind(this, props)
      }
    } else if (isMobile() && appInfo) {
      // If we are on the "mobile web version", we try to open the native app
      // if it exists with an universal links. If it fails, we redirect to the web
      // version of the requested app
      // Only on iOS ATM
      if (isAndroid()) {
        onClick = AppLinker.openNativeFromWeb.bind(this, props)
      } else {
        //Since generateUniversalLink can rise an error, let's catch it to not crash
        //all the page.
        try {
          href = generateUniversalLink({ slug, nativePath, fallbackUrl: href })
        } catch (err) {
          console.error(err)
          href = '#'
        }
      }

const currentFile = files[currentIndex]
    const fileCount = files.length
    const hasPrevious = currentIndex > 0
    const hasNext = currentIndex < fileCount - 1
    // this `expanded` property makes the next/previous controls cover the displayed image
    const expanded = currentFile && currentFile.class === 'image'
    return (
      
        
          {this.renderViewer(currentFile)}
        
      
    )
  }

getViewerComponentName(file) {
    switch (file.class) {
      case 'image':
        return ImageViewer
      case 'audio':
        return AudioViewer
      case 'video':
        return isMobile() ? NoViewer : VideoViewer
      case 'pdf':
        return PdfJsViewer
      case 'text':
        return isPlainText(file.mime, file.name) ? TextViewer : NoViewer
      default:
        return NoViewer
    }
  }
}

getViewerComponentName(file) {
    switch (file.class) {
      case 'image':
        return ImageViewer
      case 'audio':
        return AudioViewer
      case 'video':
        return isMobile() ? NoViewer : VideoViewer
      case 'pdf':
        return PdfJsViewer
      case 'text':
        return isPlainText(file.mime, file.name) ? TextViewer : NoViewer
      default:
        return NoViewer
    }
  }
}