Kureev/react-native-navbar

Cannot read property 'displayName' of undefined

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#165 opened on May 9, 2016

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bughelp wanted

Description

I'm getting this error when I try to run the vanilla example in my own app

import NavigationBar from 'react-native-navbar'

...

render () {
    const rightButtonConfig = {
      title: 'Next',
      handler: () => {
        alert('hello!')
      }
    }
    const titleConfig = {
      title: 'Hello, world',
    }
    return (
      <View style={styles.overlayContainer}>
        <NavigationBar title={titleConfig} rightButton={rightButtonConfig} />
        <View style={styles.topBar}>
          <Text>Dashboard Screen</Text>
        </View>
      </View>
    )
  }

image

Has anyone seen this before?

Contributor guide

Tech stack
javascriptreact native
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic React Native knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the source code of react native navbar for where 'displayName' is accessed. Check if the error occurs when 'title' or 'rightButton' props are passed as objects. The error likely indicates a missing or undefined property in the component's rendering logic. Look at the specific component files to understand the expected prop structure and add a guard for undefined values.