N
Nuxt•2mo ago
Drom

Layer with Component Prefix

I am trying to append a prefix "Special" to the components that comes from the Layer. So that there is a clear difference between each of it. But when ever I use the component in the main app, it is not showing and gives this error. How can I fix this? 
[Vue warn]: Failed to resolve component: SpecialLayerComponent
If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement. 
  at <Index onVnodeUnmounted=fn<onVnodeUnmounted> ref=Ref< undefined > > 
  at <RouteProvider key="/" vnode= {__v_isVNode: true, __v_skip: true, type: {…}, props: {…}, key: null, …} route= {fullPath: '/', hash: '', query: {…}, name: 'index', path: '/', …}  ... > 
  at <RouterView name=undefined route=undefined > 
  at <NuxtPage> 
  at <App key=4 > 
  at <NuxtRoot>

Hydration completed but contains mismatches.
[Vue warn]: Failed to resolve component: SpecialLayerComponent
If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement. 
  at <Index onVnodeUnmounted=fn<onVnodeUnmounted> ref=Ref< undefined > > 
  at <RouteProvider key="/" vnode= {__v_isVNode: true, __v_skip: true, type: {…}, props: {…}, key: null, …} route= {fullPath: '/', hash: '', query: {…}, name: 'index', path: '/', …}  ... > 
  at <RouterView name=undefined route=undefined > 
  at <NuxtPage> 
  at <App key=4 > 
  at <NuxtRoot>

Hydration completed but contains mismatches.
Image 01:- nuxt config of the application which is extended. Image 02:- nuxt config of the main app Image 03:- Using components from the groot layer in the main application.
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5 Replies
kapa.ai
kapa.ai•2mo ago
Hi @Drom. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the error message, it seems you're having an issue with component prefixing in your Nuxt layer setup. The component SpecialLayerComponent is not being properly resolved when you try to use it in your main application. The Issue When configuring component prefixes in Nuxt layers, there are specific ways to set this up correctly. The error suggests that while you've attempted to add a "Special" prefix to your layer components, the registration isn't working properly. How to Fix It To properly prefix components from a layer, you need to configure the components in your Nuxt configuration. Here's how you can fix it: Option 1: Configure Components in Your Main App In your main app's nuxt.config.ts, you need to explicitly define how components from your layer should be imported: 
export default defineNuxtConfig({
  // Your other config
  extends: ['./groot-layer'],
  components: [
    // Add this to properly register layer components with prefix
    { 
      path: '~/groot-layer/components',
      prefix: 'Special'
    },
    // Keep your main components last
    '~/components'
  ]
})
export default defineNuxtConfig({
  // Your other config
  extends: ['./groot-layer'],
  components: [
    // Add this to properly register layer components with prefix
    { 
      path: '~/groot-layer/components',
      prefix: 'Special'
    },
    // Keep your main components last
    '~/components'
  ]
})
Option 2: Configure Components in Your Layer Alternatively, you can set up the prefix in your layer's nuxt.config.ts: 
export default defineNuxtConfig({
  components: [
    { 
      path: '~/components',
      prefix: 'Special',
      global: true
    }
  ]
})
export default defineNuxtConfig({
  components: [
    { 
      path: '~/components',
      prefix: 'Special',
      global: true
    }
  ]
})
Important Notes 1. Component Scanning Order: The order of component directories matters. If you have overrides you wish to apply, make sure they come before more general directories as mentioned in the documentation. 2. Layer Merging Behavior: Remember that layers get merged, so components from different layers with the same name might conflict unless properly prefixed or organized in different directories. 3. Component Naming: When using prefixes, make sure you're using the full component name including the prefix in your templates. For example, use <SpecialLayerComponent /> instead of just <LayerComponent />. If you're still having issues, you might want to check if your component is actually being registered by looking at the .nuxt/components.d.ts file in your project, which lists all registered components. Let me know if this helps or if you need further assistance! ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2mo ago
<@1153996354587201637> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
Drom
DromOP•2mo ago
It doesn't work. I've tried your way. @kapa.ai . Still the same error. Without adding prefixes, the application works as expected. But I need to add a prefix for the components that comes from the Layer for unique identification
kapa.ai
kapa.ai•2mo ago
Let me check the knowledge base for you again. One moment! :books: ---------------------- I understand you're still facing issues with adding prefixes to components from your Nuxt layer. Let's explore some more specific approaches to solve this problem. Alternative Solutions for Component Prefixing in Layers 1. Use Library Author Approach Nuxt provides a way for library authors (which applies to layer creators too) to prefix their components using the components:dirs hook: 
// In your layer's module file (e.g., groot-layer/module.ts)
import { defineNuxtModule, createResolver } from '@nuxt/kit'

export default defineNuxtModule({
  hooks: {
    'components:dirs': (dirs) => {
      const { resolve } = createResolver(import.meta.url)
      // Add components dir with prefix
      dirs.push({
        path: resolve('./components'),
        prefix: 'Special'
      })
    }
  }
})
// In your layer's module file (e.g., groot-layer/module.ts)
import { defineNuxtModule, createResolver } from '@nuxt/kit'

export default defineNuxtModule({
  hooks: {
    'components:dirs': (dirs) => {
      const { resolve } = createResolver(import.meta.url)
      // Add components dir with prefix
      dirs.push({
        path: resolve('./components'),
        prefix: 'Special'
      })
    }
  }
})
Then in your layer's nuxt.config.ts, include this module: 
export default defineNuxtConfig({
  modules: ['./module']
})
export default defineNuxtConfig({
  modules: ['./module']
})
This approach is documented in the Library Authors section of the Nuxt documentation. 2. Check Component Name Normalization Nuxt has a feature called component name normalization that might be affecting how your components are registered. You could try disabling it: 
// In your main app's nuxt.config.ts
export default defineNuxtConfig({
  experimental: {
    normalizeComponentNames: false
  }
})
// In your main app's nuxt.config.ts
export default defineNuxtConfig({
  experimental: {
    normalizeComponentNames: false
  }
})
3. Verify Component Registration To debug this issue, check if your components are being registered correctly: 1. Look at the .nuxt/components.d.ts file in your project to see how components are actually being registered 2. Make sure the component files in your layer don't have naming conflicts with your main app 3. Check if the component is actually being imported correctly in your template 4. Use Custom Directory Structure Another approach is to structure your layer's components in a way that naturally creates the prefix: 
groot-layer/
  components/
    Special/
      LayerComponent.vue
groot-layer/
  components/
    Special/
      LayerComponent.vue
This would register as <SpecialLayerComponent /> with default Nuxt behavior. 5. Consider Using Nuxt UI's Approach If you're building a UI library as a layer, you might want to look at how Nuxt UI handles component prefixing: 
// In your main app's nuxt.config.ts
export default defineNuxtConfig({
  modules: ['your-layer-module'],
  yourLayerModule: {
    prefix: 'Special'
  }
})
// In your main app's nuxt.config.ts
export default defineNuxtConfig({
  modules: ['your-layer-module'],
  yourLayerModule: {
    prefix: 'Special'
  }
})
This is similar to how Nuxt UI handles prefixing. Let me know if any of these approaches help with your specific setup, or if you need more targeted assistance. I'd also recommend checking the exact structure of your layer and how it's being extended to better diagnose the issue. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2mo ago
<@1153996354587201637> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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