Nuxt•4w ago

Nuxt modules with layers

Is it possible to use layers with modules or creating a lmodule with layer? Or is it possible to give configuration to a layer like we can do for modules?

11 Replies

kapa.ai•4w ago

Hi @BenG. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Nuxt supports using layers and modules together, but they serve different purposes and have different configuration mechanisms. Using Layers with Modules - Layers are a way to encapsulate and share code, configuration, and assets across Nuxt projects. You can extend multiple layers in a Nuxt project, and each layer can include its own modules, components, and configuration. - Modules are plugins that extend Nuxt’s functionality and can be included in both the main project and in layers. You can create a Nuxt layer that includes modules in its nuxt.config.ts:

// In your layer's nuxt.config.ts
export default defineNuxtConfig({
  modules: [
    'some-nuxt-module'
  ]
})

// In your layer's nuxt.config.ts
export default defineNuxtConfig({
  modules: [
    'some-nuxt-module'
  ]
})

When you use this layer in a project, the module will be available as part of the layer. However, if the module requires dependencies, those must be installed in the consuming project, or you need to ensure the layer is added as a dependency in the main project's package.json so its dependencies are installed as well. This is a common pattern for sharing modules via layers, especially in monorepos or when distributing layers as npm packages or local packages. See the discussion and workaround here: Dependencies from local package layer not installed/found. Creating a Module with a Layer You can create a Nuxt module that provides a layer, but the standard approach is to create a layer (with its own nuxt.config.ts, components, etc.) and then publish it as an npm package or local dependency. The consuming project can then extend this layer. Configuring Layers Unlike modules, layers do not natively accept configuration options from the consuming project in the same way modules do (i.e., you cannot pass options to a layer like you do with modules in the modules array). Layers are meant to be extended, and their configuration is merged with the main project's configuration. If you need to make a layer configurable, you would typically expose configuration via environment variables or by providing composables or plugins that accept options. Summary - You can use modules inside layers. - You can distribute layers as npm packages or local dependencies, and they can include modules. - You cannot pass configuration to a layer in the same way as to a module; configuration is merged, not parameterized. - If you need to make a layer configurable, you must implement your own mechanism (e.g., via environment variables or composables). For more on how layers and modules interact, see the official documentation and related discussions:
Dependencies from local package layer not installed/found
feat(kit): add named layer aliases
docs: add giget limitation in nuxt layers documentation ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4w ago

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BenGOP•4w ago

@kapa.ai Provide me a simple example how to pass configuration via env vars to a layer to use

kapa.ai•4w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- Certainly! To pass configuration via environment variables to a Nuxt layer, you define the environment variables in your .env file or in your deployment environment, and then access them in your layer's nuxt.config.ts using process.env or through Nuxt's runtimeConfig. Example: 1. Define environment variables
In your project's .env file (at the root):

   NUXT_PUBLIC_API_URL=<https://api.example.com>

   NUXT_PUBLIC_API_URL=<https://api.example.com>

2. Access in the layer's nuxt.config.ts
In your layer's nuxt.config.ts, you can use these variables in the runtimeConfig:

   export default defineNuxtConfig({
     runtimeConfig: {
       public: {
         apiUrl: process.env.NUXT_PUBLIC_API_URL
       }
     }
   })

   export default defineNuxtConfig({
     runtimeConfig: {
       public: {
         apiUrl: process.env.NUXT_PUBLIC_API_URL
       }
     }
   })

3. Use in your layer's code
Anywhere in your layer (e.g., in a composable or plugin), you can access the value with useRuntimeConfig():

   export default function useApiUrl() {
     const config = useRuntimeConfig()
     return config.public.apiUrl
   }

   export default function useApiUrl() {
     const config = useRuntimeConfig()
     return config.public.apiUrl
   }

How it works:
- The consuming project or deployment environment sets the environment variable. - The layer reads it via process.env in its config, and exposes it through runtimeConfig. - The value is available at runtime in the app, including in the layer. This approach is standard for passing configuration to layers, as layers do not accept direct options like modules do. For more details, see the discussion on environment variables and runtime config in Nuxt:
nuxt.config.ts won't read env variables
Using different api url from .env based on environment in Nuxt 3 ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4w ago

<@371347799255547916> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

BenGOP•4w ago

@kapa.ai is it possible to register a page with a different path using layers and this env config? So like in the layers there is /admin/somepage and I want to override it to /random/admin/somepage ? (just the root)

kapa.ai•4w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- Based on the knowledge sources provided, there is no explicit documentation or example showing that you can dynamically register or override a page's route path in a Nuxt layer using environment variables or runtime config. However, Nuxt does allow you to programmatically extend or modify routes using hooks like pages:extend in your nuxt.config.ts. For example, you can change the path of a page at build time:

export default defineNuxtConfig({
  hooks: {
    'pages:extend'(pages) {
      pages.forEach((page) => {
        if (page.file === 'admin/somepage.vue') {
          page.path = '/random/admin/somepage'
        }
      })
    }
  }
})

export default defineNuxtConfig({
  hooks: {
    'pages:extend'(pages) {
      pages.forEach((page) => {
        if (page.file === 'admin/somepage.vue') {
          page.path = '/random/admin/somepage'
        }
      })
    }
  }
})

This approach is static and must be defined in the config, not dynamically via runtime environment variables. The knowledge sources do not mention a way to use environment variables to change the route path at runtime or to override a layer's page path in this way. In summary:
- You can override or change page paths using Nuxt hooks in the config. - There is no evidence in the sources that you can do this dynamically via environment variables at runtime or specifically as a feature of layers. If you need to change the route path based on an environment variable, you would have to use the environment variable in your nuxt.config.ts and apply the logic in the pages:extend hook, but this is still a build-time operation, not a runtime one.
See the example of using pages:extend for custom routing here: Dynamic routing in Nuxt3. If you need more dynamic routing based on runtime config, the knowledge sources do not provide a solution for that. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4w ago

<@371347799255547916> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

BenGOP•4w ago

@kapa.ai using defineCollection (from nuxt content) in a layer?

kapa.ai•4w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I'm sorry, but the knowledge sources provided do not contain any information about using defineCollection from Nuxt Content within a layer. There are no explicit examples or documentation references regarding this usage. If you need detailed guidance on this topic, I recommend consulting the official Nuxt Content documentation or community channels for more up-to-date information. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4w ago

<@371347799255547916> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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