Issue of Vue not resolving Ionic back button component

I'm having trouble figuring out why Vue is giving me a warning and the back button isn't functioning as expected:

runtime-core.esm-bundler.js?5c40:38 [Vue warn]: Failed to resolve component: ion-back-button 
  at <TheHeader titulo="Home" > 
  at <IonPage isInOutlet=true registerIonPage=fn<registerIonPage> > 
  at <Home ref=Ref< undefined > key="/home" isInOutlet=true  ... > 
  at <IonRouterOutlet> 
  at <IonApp> 
  at <App>

This issue arose in a simple app that I built from scratch with multiple pages sharing a header. I decided to create a new component called TheHeader for outsourcing the header, but ever since then, the back button stopped working.

I want to cut through unnecessary information to address this quickly. Here's an example of one of my pages, Home.vue:

<template>
    <ion-page>
        <the-header titulo="Home"></the-header>
        <ion-content>
        </ion-content>
    </ion-page>
</template>

<script>
import { IonContent, IonPage } from '@ionic/vue';
import TheHeader from '../components/TheHeader.vue';

export default {
  name: 'Home',
  components: {
    IonContent,
    IonPage,
    'the-header': TheHeader
  }
};
</script>

This is the code for my TheHeader.vue component:

<template>
    <ion-header>
        <ion-toolbar>
            <ion-buttons name="start">
                <ion-back-button>
                </ion-back-button>
            </ion-buttons>
            <ion-title>
                {{ titulo }}
            </ion-title>
        </ion-toolbar>
    </ion-header>
</template>

<script>
import { IonHeader, IonToolbar, IonTitle, IonButtons, IonBackButton } from '@ionic/vue'

export default {
    props: [
        'titulo'
    ],
    components: [
        IonHeader, IonToolbar, IonTitle, IonButtons, IonBackButton
    ]
}
</script>

Whenever I navigate from Home to another page, or simply reload the current page without any navigation, I encounter the warning mentioned above. Additionally, if I navigate to another page and try clicking the back button, it doesn't lead me back to the previous page.

Can anyone help me identify what I might be doing incorrectly?

Answer №1

The information on components documentation specifies that the type should be an Object. An interesting demonstration illustrates that using arrays for components will not work as intended.

To resolve this issue, one must modify components to be an Object in TheHeader.vue:

export default {
    // ORIGINAL:
    components: [ IonHeader, IonToolbar, IonTitle, IonButtons, IonBackButton ]

    // UPDATED:   👇                                                          👇
    components: { IonHeader, IonToolbar, IonTitle, IonButtons, IonBackButton }
}

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