feat(nuxt3,bridge): add automatic schema augmentation declaration (#3096)

Co-authored-by: Pooya Parsa <pyapar@gmail.com>

packages/bridge/package.json

@@ -34,6 +34,7 @@
     "defu": "^5.0.1",
     "destr": "^1.1.0",
     "enhanced-resolve": "^5.9.0",
+    "escape-string-regexp": "^5.0.0",
     "estree-walker": "^3.0.1",
     "externality": "^0.1.6",
     "fs-extra": "^10.0.0",

packages/bridge/src/app.ts

@@ -1,6 +1,8 @@
-import { useNuxt, resolveModule, addTemplate } from '@nuxt/kit'
+import { useNuxt, resolveModule, addTemplate, resolveAlias } from '@nuxt/kit'
+import { NuxtModule } from '@nuxt/schema'
 import { resolve } from 'pathe'
 import { componentsTypeTemplate } from '../../nuxt3/src/components/templates'
+import { schemaTemplate } from '../../nuxt3/src/core/templates'
 import { distDir } from './dirs'
 
 export function setupAppBridge (_options: any) {
@@ -38,6 +40,15 @@ export function setupAppBridge (_options: any) {
     references.push({ path: resolve(nuxt.options.buildDir, 'types/components.d.ts') })
   })
 
+  // Augment schema with module types
+  nuxt.hook('modules:done', async (container: any) => {
+    nuxt.options._installedModules = await Promise.all(Object.values(container.requiredModules).map(async (m: { src: string, handler: NuxtModule }) => ({
+      meta: await m.handler.getMeta?.(),
+      entryPath: resolveAlias(m.src, nuxt.options.alias)
+    })))
+    addTemplate(schemaTemplate)
+  })
+
   // Alias vue to have identical vue3 exports
   nuxt.options.alias['vue2-bridge'] = resolve(distDir, 'runtime/vue2-bridge.mjs')
   for (const alias of [

packages/kit/src/module/container.ts

@@ -32,7 +32,7 @@ export function useModuleContainer (nuxt: Nuxt = useNuxt()): ModuleContainer {
     } else {
       src = moduleOpts
     }
-    await installModule(src, inlineOptions, nuxt)
+    await installModule(src, inlineOptions)
   }
 
   nuxt[MODULE_CONTAINER_KEY] = <ModuleContainer>{

packages/kit/src/module/install.ts

@@ -1,18 +1,34 @@
-import type { NuxtModule, Nuxt } from '@nuxt/schema'
+import type { Nuxt, NuxtModule } from '@nuxt/schema'
 import { useNuxt } from '../context'
 import { resolveModule, requireModule, importModule } from '../internal/cjs'
 import { resolveAlias } from '../resolve'
 import { useModuleContainer } from './container'
 
 /** Installs a module on a Nuxt instance. */
-export async function installModule (nuxtModule: string | NuxtModule, inlineOptions?: any, nuxt: Nuxt = useNuxt()) {
+export async function installModule (moduleToInstall: string | NuxtModule, _inlineOptions?: any, _nuxt?: Nuxt) {
+  const nuxt = useNuxt()
+  const { nuxtModule, inlineOptions } = await normalizeModule(moduleToInstall, _inlineOptions)
+
+  // Call module
+  await nuxtModule.call(useModuleContainer(), inlineOptions, nuxt)
+
+  nuxt.options._installedModules = nuxt.options._installedModules || []
+  nuxt.options._installedModules.push({
+    meta: await nuxtModule.getMeta?.(),
+    entryPath: typeof moduleToInstall === 'string' ? resolveAlias(moduleToInstall) : undefined
+  })
+}
+
+// --- Internal ---
+
+async function normalizeModule (nuxtModule: string | NuxtModule, inlineOptions?: any) {
+  const nuxt = useNuxt()
+
   // Detect if `installModule` used with older signuture (nuxt, nuxtModule)
   // TODO: Remove in RC
   // @ts-ignore
   if (nuxtModule?._version || nuxtModule?.version || nuxtModule?.constructor?.version || '') {
-    // @ts-ignore
-    [nuxt, nuxtModule] = [nuxtModule, inlineOptions]
-    inlineOptions = {}
+    [nuxtModule, inlineOptions] = [inlineOptions, {}]
     console.warn(new Error('`installModule` is being called with old signature!'))
   }
 
@@ -29,6 +45,5 @@ export async function installModule (nuxtModule: string | NuxtModule, inlineOpti
     throw new TypeError('Nuxt module should be a function: ' + nuxtModule)
   }
 
-  // Call module
-  await nuxtModule.call(useModuleContainer(), inlineOptions, nuxt)
+  return { nuxtModule, inlineOptions } as { nuxtModule: NuxtModule<any>, inlineOptions: undefined | Record<string, any> }
 }

packages/nuxt3/src/core/nuxt.ts

@@ -49,6 +49,8 @@ async function initNuxt (nuxt: Nuxt) {
     if (nuxt.options.typescript.shim) {
       opts.references.push({ path: resolve(nuxt.options.buildDir, 'types/vue-shim.d.ts') })
     }
+    // Add module augmentations directly to NuxtConfig
+    opts.references.push({ path: resolve(nuxt.options.buildDir, 'types/schema.d.ts') })
   })
 
   // Add import protection
@@ -82,9 +84,9 @@ async function initNuxt (nuxt: Nuxt) {
 
   for (const m of modulesToInstall) {
     if (Array.isArray(m)) {
-      await installModule(m[0], m[1], nuxt)
+      await installModule(m[0], m[1])
     } else {
-      await installModule(m, {}, nuxt)
+      await installModule(m, {})
     }
   }
 

packages/nuxt3/src/core/templates.ts

@@ -1,13 +1,13 @@
 import { templateUtils } from '@nuxt/kit'
 import type { Nuxt, NuxtApp } from '@nuxt/schema'
-import { genArrayFromRaw, genDynamicImport, genExport, genImport } from 'knitwork'
+import { genArrayFromRaw, genDynamicImport, genExport, genImport, genString } from 'knitwork'
 
 import { isAbsolute, join, relative } from 'pathe'
 import escapeRE from 'escape-string-regexp'
 
-type TemplateContext = {
-  nuxt: Nuxt;
-  app: NuxtApp;
+export interface TemplateContext {
+  nuxt: Nuxt
+  app: NuxtApp
 }
 
 export const vueShim = {
@@ -110,3 +110,25 @@ export { }
 `
   }
 }
+
+const adHocModules = ['router', 'pages', 'auto-imports', 'meta', 'components']
+export const schemaTemplate = {
+  filename: 'types/schema.d.ts',
+  getContents: ({ nuxt }: TemplateContext) => {
+    const moduleInfo = nuxt.options._installedModules.map(m => ({
+      ...m.meta || {},
+      importName: m.entryPath || m.meta?.name
+    })).filter(m => m.configKey && m.name && !adHocModules.includes(m.name))
+
+    return [
+      "import { NuxtModule } from '@nuxt/schema'",
+      "declare module '@nuxt/schema' {",
+      '  interface NuxtConfig {',
+      ...moduleInfo.filter(Boolean).map(meta =>
+      `    [${genString(meta.configKey)}]?: typeof ${genDynamicImport(meta.importName, { wrapper: false })}.default extends NuxtModule<infer O> ? Partial<O> : Record<string, any>`
+      ),
+      '  }',
+      '}'
+    ].join('\n')
+  }
+}

packages/schema/src/config/_common.ts

@@ -288,6 +288,14 @@ export default {
    */
   _modules: [],
 
+  /**
+   * Installed module metadata
+   *
+   * @version 3
+   * @private
+  */
+  _installedModules: [],
+
   /**
    * Allows customizing the global ID used in the main HTML template as well as the main
    * Vue instance name and other options.

yarn.lock

@@ -2576,6 +2576,7 @@ __metadata:
     defu: ^5.0.1
     destr: ^1.1.0
     enhanced-resolve: ^5.9.0
+    escape-string-regexp: ^5.0.0
     estree-walker: ^3.0.1
     externality: ^0.1.6
     fs-extra: ^10.0.0