feat(ts): nuxt configuration typedefs (#4854)

examples/typescript-vuex/nuxt.config.ts

@@ -1,4 +1,6 @@
-const config = {
+import NuxtConfiguration from '@nuxt/config-edge'
+
+const config: NuxtConfiguration = {
   head: {
     title: 'starter',
     meta: [

examples/typescript/nuxt.config.ts

@@ -1,3 +1,7 @@
-export default {
+import NuxtConfiguration from '@nuxt/config-edge'
+
+const config: NuxtConfiguration = {
   plugins: ['~/plugins/hello']
 }
+
+export default config

packages/config/package.json

@@ -4,9 +4,11 @@
   "repository": "nuxt/nuxt.js",
   "license": "MIT",
   "files": [
-    "dist"
+    "dist",
+    "types/*.d.ts"
   ],
   "main": "dist/config.js",
+  "typings": "types/index.d.ts",
   "dependencies": {
     "@nuxt/utils": "2.4.5",
     "consola": "^2.5.6",

packages/config/types/build.d.ts

@@ -0,0 +1,63 @@
+/**
+ * NuxtConfigurationBuild
+ * Documentation: https://nuxtjs.org/api/configuration-build
+ */
+
+import {
+  Configuration as WebpackConfiguration,
+  Options as WebpackOptions,
+  Plugin as WebpackPlugin
+} from 'webpack'
+import { BundleAnalyzerPlugin } from 'webpack-bundle-analyzer'
+import { Options as WebpackDevMiddlewareOptions } from 'webpack-dev-middleware'
+import { Options as WebpackHotMiddlewareOptions } from 'webpack-hot-middleware'
+import { Options as HtmlMinifierOptions } from 'html-minifier'
+import { Options as OptimizeCssAssetsWebpackPluginOptions } from 'optimize-css-assets-webpack-plugin'
+import { TerserPluginOptions } from 'terser-webpack-plugin'
+
+type NuxtConfigurationLoaders = any // TBD
+
+export interface NuxtConfigurationBuild {
+  analyze?: BundleAnalyzerPlugin.Options | boolean
+  babel?: any // TBD
+  cache?: boolean
+  crossorigin?: string
+  cssSourceMap?: boolean
+  devMiddleware?: WebpackDevMiddlewareOptions
+  devtools?: boolean
+  extend?(
+    config: WebpackConfiguration,
+    ctx: {
+      isDev: boolean,
+      isClient: boolean,
+      isServer: boolean,
+      loaders: NuxtConfigurationLoaders
+    }
+  ): void
+  extractCSS?: boolean
+  filenames?: { [key in 'app' | 'chunk' | 'css' | 'img' | 'font' | 'video']?: (ctx: { isDev: boolean }) => string }
+  friendlyErrors?: boolean
+  hardSource?: boolean
+  hotMiddleware?: WebpackHotMiddlewareOptions
+  html?: { minify: HtmlMinifierOptions }
+  loaders?: NuxtConfigurationLoaders
+  optimization?: WebpackOptions.Optimization
+  optimizeCSS?: OptimizeCssAssetsWebpackPluginOptions | boolean
+  parallel?: boolean
+  plugins?: WebpackPlugin[]
+  postcss?: any // TBD
+  profile?: boolean
+  publicPath?: string
+  quiet?: boolean
+  splitChunks?: {
+    commons?: boolean
+    layouts?: boolean
+    pages?: boolean
+  }
+  ssr?: boolean
+  templates?: any
+  terser?: TerserPluginOptions | boolean
+  transpile?: (string | RegExp)[]
+  useForkTsChecker?: { [key: string]: string } | boolean // TBD - Couldn't find typedefs for the forkTsCheckerWebpackPlugin options
+  watch?: string[]
+}

packages/config/types/env.d.ts

@@ -0,0 +1,6 @@
+/**
+ * NuxtConfigurationEnv
+ * Documentation: https://nuxtjs.org/api/configuration-env
+ */
+
+export type NuxtConfigurationEnv = { [key: string]: string }

packages/config/types/fetch.d.ts

@@ -0,0 +1,9 @@
+/**
+ * NuxtConfigurationFetch
+ * Documentation: ?
+ */
+
+export interface NuxtConfigurationFetch {
+  client?: boolean
+  server?: boolean
+}

packages/config/types/generate.d.ts

@@ -0,0 +1,19 @@
+/**
+ * NuxtConfigurationGenerate
+ * Documentation: https://nuxtjs.org/api/configuration-generate
+ */
+
+type NuxtConfigurationGenerateRoute = string | { route: string, payload: any }
+
+type NuxtConfigurationGenerateRoutesFunction = () => (Promise<NuxtConfigurationGenerateRoute[]> | NuxtConfigurationGenerateRoute[])
+type NuxtConfigurationGenerateRoutesFunctionWithCallback = (callback: (err: Error, routes: NuxtConfigurationGenerateRoute[]) => void) => void
+
+export interface NuxtConfigurationGenerate {
+  concurrency?: number
+  devtools?: boolean
+  dir?: string
+  fallback?: string | boolean
+  interval?: number
+  routes?: NuxtConfigurationGenerateRoute[] | NuxtConfigurationGenerateRoutesFunction | NuxtConfigurationGenerateRoutesFunctionWithCallback
+  subFolders?: boolean
+}

packages/config/types/globals.d.ts

@@ -0,0 +1,7 @@
+/**
+ * NuxtConfigurationGlobals
+ * Documentation: https://nuxtjs.org/api/configuration-globals
+ */
+
+type NuxtConfigurationCustomizableGlobalName = 'id' | 'nuxt' | 'context' | 'pluginPrefix' | 'readyCallback' | 'loadedCallback'
+export type NuxtConfigurationGlobals = { [key in NuxtConfigurationCustomizableGlobalName]?: (globalName: string) => string }

packages/config/types/head.d.ts

@@ -0,0 +1,9 @@
+/**
+ * NuxtConfigurationHead
+ * Documentation: https://nuxtjs.org/api/configuration-head
+ *                https://github.com/declandewet/vue-meta#recognized-metainfo-properties
+ */
+
+import { MetaInfo } from 'vue-meta'
+
+export type NuxtConfigurationHead = MetaInfo

packages/config/types/hooks.d.ts

@@ -0,0 +1,50 @@
+/**
+ * NuxtConfigurationHooks
+ * Documentation: https://nuxtjs.org/api/configuration-hooks
+ *                https://nuxtjs.org/api/internals-nuxt#hooks
+ *                https://nuxtjs.org/api/internals-renderer#hooks
+ *                https://nuxtjs.org/api/internals-module-container#hooks
+ *                https://nuxtjs.org/api/internals-builder#hooks
+ *                https://nuxtjs.org/api/internals-generator#hooks
+ */
+
+export interface NuxtConfigurationHooks {
+  build?: {
+    before?(builder: any, buildOptions: any): void
+    compile?(params: { name: 'client' | 'server', compiler: any }): void
+    compiled?(params: { name: 'client' | 'server', compiler: any, stats: any }): void
+    done?(builder: any): void
+    extendRoutes?(routes: any, resolve: any): void
+    templates?(params: { templateFiles: any, templateVars: any, resolve: any }): void
+  }
+  close?(nuxt: any): void
+  error?(error: Error): void
+  generate?: {
+    before?(generator: any, generateOptions: any): void
+    distCopied?(generator: any): void
+    distRemoved?(generator: any): void
+    done?(generator: any): void
+    extendRoutes?(routes: any): void
+    page?(params: { route: any, path: any, html: any }): void
+    routeCreated?(route: any, path: any, errors: any): void
+    routeFailed?(route: any, errors: any): void
+  }
+  listen?(server: any, params: { host: string, port: number | string }): void
+  modules?: {
+    before?(moduleContainer: any, options: any): void
+    done?(moduleContainer: any): void
+  }
+  ready?(nuxt: any): void
+  render?: {
+    before?(renderer: any, options: any): void
+    done?(renderer: any): void
+    errorMiddleware?(app: any): void
+    resourcesLoaded?(resources: any): void
+    route?(url: string, result: any, context: any): void
+    routeContext?(context: any): void
+    routeDone?(url: string, result: any, context: any): void
+    setupMiddleware?(app: any): void
+  }
+}
+
+// Hooks need too many core typedefs to be 100% defined

packages/config/types/index.d.ts

@@ -0,0 +1,92 @@
+import { NuxtConfigurationBuild } from './build'
+import { NuxtConfigurationEnv } from './env'
+import { NuxtConfigurationFetch } from './fetch'
+import { NuxtConfigurationGenerate } from './generate'
+import { NuxtConfigurationHead } from './head'
+import { NuxtConfigurationHooks } from './hooks'
+import { NuxtConfigurationGlobals } from './globals'
+import { NuxtConfigurationLoading, NuxtConfigurationLoadingIndicator } from './loading'
+import { NuxtConfigurationModule } from './module'
+import { NuxtConfigurationPlugin } from './plugin'
+import { NuxtConfigurationRender } from './render'
+import { NuxtConfigurationRouter } from './router'
+import { NuxtConfigurationServer } from './server'
+import { NuxtConfigurationServerMiddleware } from './server-middleware'
+import { NuxtConfigurationVueConfiguration } from './vue-configuration'
+import { NuxtConfigurationWatchers } from './watchers'
+
+type ExtendableConfiguration = { [key: string]: any }
+
+export default interface NuxtConfiguration extends ExtendableConfiguration {
+  build?: NuxtConfigurationBuild
+  buildDir?: string
+  css?: string[]
+  dev?: boolean
+  env?: NuxtConfigurationEnv
+  fetch?: NuxtConfigurationFetch
+  generate?: NuxtConfigurationGenerate
+  globalName?: string
+  globals?: NuxtConfigurationGlobals
+  head?: NuxtConfigurationHead
+  hooks?: NuxtConfigurationHooks
+  ignorePrefix?: string
+  ignore?: string[]
+  layoutTransition?: any // TBD - should be of type `Transition` already defined in @nuxt/vue-app
+  loading?: NuxtConfigurationLoading | false | string
+  loadingIndicator?: NuxtConfigurationLoadingIndicator | false | string
+  mode?: 'spa' | 'universal' // TBR (To Be Reviewed) - should be a `NuxtMode` interface which should be used in @nuxt/vue-app/types/process.d.ts as well
+  modern?: 'client' | 'server' | boolean
+  modules?: NuxtConfigurationModule[]
+  modulesDir?: string[]
+  plugins?: NuxtConfigurationPlugin[]
+  render?: NuxtConfigurationRender
+  rootDir?: string
+  router?: NuxtConfigurationRouter
+  server?: NuxtConfigurationServer
+  serverMiddleware?: NuxtConfigurationServerMiddleware[]
+  srcDir?: string
+  transition?: any // TBD - should be of type `Transition` already defined in @nuxt/vue-app
+  'vue.config'?: NuxtConfigurationVueConfiguration
+  watch?: string[]
+  watchers?: NuxtConfigurationWatchers
+}
+
+export {
+  NuxtConfigurationBuild as Build,
+  NuxtConfigurationEnv as Env,
+  NuxtConfigurationFetch as Fetch,
+  NuxtConfigurationGenerate as Generate,
+  NuxtConfigurationHead as Head,
+  NuxtConfigurationHooks as Hooks,
+  NuxtConfigurationGlobals as Globals,
+  NuxtConfigurationLoading as Loading,
+  NuxtConfigurationLoadingIndicator as LoadingIndicator,
+  NuxtConfigurationModule as Module,
+  NuxtConfigurationPlugin as Plugin,
+  NuxtConfigurationRender as Render,
+  NuxtConfigurationRouter as Router,
+  NuxtConfigurationServer as Server,
+  NuxtConfigurationServerMiddleware as ServerMiddleware,
+  NuxtConfigurationVueConfiguration as VueConfiguration,
+  NuxtConfigurationWatchers as Watchers
+}
+
+export namespace NuxtConfiguration {
+  export type Build = NuxtConfigurationBuild
+  export type Env = NuxtConfigurationEnv
+  export type Fetch = NuxtConfigurationFetch
+  export type Generate = NuxtConfigurationGenerate
+  export type Head = NuxtConfigurationHead
+  export type Hooks = NuxtConfigurationHooks
+  export type Globals = NuxtConfigurationGlobals
+  export type Loading = NuxtConfigurationLoading
+  export type LoadingIndicator = NuxtConfigurationLoadingIndicator
+  export type Module = NuxtConfigurationModule
+  export type Plugin = NuxtConfigurationPlugin
+  export type Render = NuxtConfigurationRender
+  export type Router = NuxtConfigurationRouter
+  export type Server = NuxtConfigurationServer
+  export type ServerMiddleware = NuxtConfigurationServerMiddleware
+  export type VueConfiguration = NuxtConfigurationVueConfiguration
+  export type Watchers = NuxtConfigurationWatchers
+}

packages/config/types/loading.d.ts

@@ -0,0 +1,27 @@
+/**
+ * NuxtConfigurationLoading
+ * Documentation: https://nuxtjs.org/api/configuration-loading
+ */
+
+export interface NuxtConfigurationLoading {
+  color?: string
+  continuous?: boolean
+  css?: boolean
+  duration?: number
+  failedColor?: string
+  height?: string
+  rtl?: boolean
+  throttle?: number
+}
+
+/**
+ * NuxtConfigurationLoadingIndicator
+ * Documentation: https://nuxtjs.org/api/configuration-loading-indicator
+ */
+
+export interface NuxtConfigurationLoadingIndicator {
+  background?: string
+  color?: string
+  color2?: string
+  name?: string
+}

packages/config/types/module.d.ts

@@ -0,0 +1,9 @@
+/**
+ * NuxtConfigurationModule
+ * Documentation: https://nuxtjs.org/api/configuration-modules
+ *                https://nuxtjs.org/guide/modules
+ */
+
+type NuxtConfigurationModuleFunction = (this: any, moduleOptions?: { [key: string]: any }) => Promise<void> | void // this, this.options & this.nuxt TBD
+
+export type NuxtConfigurationModule = string | [string, { [key: string]: any }] | NuxtConfigurationModuleFunction

packages/config/types/plugin.d.ts

@@ -0,0 +1,7 @@
+/**
+ * NuxtConfigurationPlugin
+ * Documentation: https://nuxtjs.org/api/configuration-plugins
+ *                https://nuxtjs.org/guide/plugins
+ */
+
+export type NuxtConfigurationPlugin = { mode?: 'all' | 'client' | 'server', src: string, ssr?: boolean } | string

packages/config/types/render.d.ts

@@ -0,0 +1,27 @@
+/**
+ * NuxtConfigurationRender
+ * Documentation: https://nuxtjs.org/api/configuration-render
+ *                https://ssr.vuejs.org/api/#renderer-options
+ *                https://github.com/expressjs/compression#readme
+ *                https://github.com/expressjs/serve-static#readme
+ *                https://github.com/jshttp/etag#readme
+ */
+
+import { CompressionOptions } from 'compression'
+import { Options as EtagOptions } from 'etag'
+import { ServeStaticOptions } from 'serve-static'
+import { BundleRendererOptions } from 'vue-server-renderer'
+import { NuxtConfigurationServerMiddleware } from './index'
+
+export interface NuxtConfigurationRender {
+  bundleRenderer?: BundleRendererOptions
+  compressor?: CompressionOptions | NuxtConfigurationServerMiddleware
+  csp?: any // TBD
+  dist?: ServeStaticOptions
+  etag?: EtagOptions | false
+  fallback?: any // https://github.com/nuxt/serve-placeholder types TBD
+  http2?: any // TBD
+  resourceHints?: boolean
+  ssr?: boolean
+  static?: ServeStaticOptions
+}

packages/config/types/router.d.ts

@@ -0,0 +1,16 @@
+
+/**
+ * NuxtConfigurationRouter
+ * Documentation: https://nuxtjs.org/api/configuration-router
+ *                https://router.vuejs.org/api/#router-construction-options
+ */
+
+import { RouterOptions, Route } from 'vue-router'
+
+export interface NuxtConfigurationRouter extends RouterOptions {
+  routeNameSplitter?: string
+  extendRoutes?: (routes: Route[], resolve: (...pathSegments: string[]) => string) => void
+  linkPrefetchedClass?: string
+  middleware?: string | string[]
+  prefetchLinks?: boolean
+}

packages/config/types/server-middleware.d.ts

@@ -0,0 +1,8 @@
+/**
+ * NuxtConfigurationServerMiddleware
+ * Documentation: https://nuxtjs.org/api/configuration-servermiddleware
+ */
+
+import { RequestHandler } from 'express'
+
+export type NuxtConfigurationServerMiddleware = string | { path: string, handler: string | Function } | RequestHandler

packages/config/types/server.d.ts

@@ -0,0 +1,15 @@
+/**
+ * NuxtConfigurationServer
+ * Documentation: https://nuxtjs.org/api/configuration-server
+ */
+
+export interface NuxtConfigurationServer {
+  host?: string
+  https?: {
+    cert?: string | Buffer
+    key?: string | Buffer
+  }
+  port?: number | string
+  socket?: string
+  timing?: boolean | { total?: boolean }
+}

packages/config/types/vue-configuration.d.ts

@@ -0,0 +1,9 @@
+/**
+ * NuxtConfigurationVueConfiguration
+ * Documentation: https://nuxtjs.org/api/configuration-vue-config
+ *                https://vuejs.org/v2/api/#Global-Config
+ */
+
+import { VueConstructor } from 'vue'
+
+export type NuxtConfigurationVueConfiguration = VueConstructor['config']

packages/config/types/watchers.d.ts

@@ -0,0 +1,14 @@
+/**
+ * NuxtConfigurationWatchers
+ * Documentation: https://nuxtjs.org/api/configuration-watchers
+ *                https://github.com/paulmillr/chokidar#api
+ *                https://webpack.js.org/configuration/watch/#watchoptions
+ */
+
+import { WatchOptions as ChokidarWatchOptions } from 'chokidar'
+import { WatchOptions as WebpackWatchOptions } from 'webpack'
+
+export type NuxtConfigurationWatchers = {
+  chokidar?: ChokidarWatchOptions
+  webpack?: WebpackWatchOptions
+}

packages/typescript/package.json

@@ -9,7 +9,19 @@
   ],
   "main": "dist/typescript.js",
   "dependencies": {
+    "@types/chokidar": "^1.7.5",
+    "@types/compression": "^0.0.36",
+    "@types/etag": "^1.8.0",
+    "@types/express": "^4.16.1",
+    "@types/html-minifier": "^3.5.3",
     "@types/node": "^11.10.4",
+    "@types/optimize-css-assets-webpack-plugin": "^1.3.4",
+    "@types/serve-static": "^1.13.2",
+    "@types/terser-webpack-plugin": "^1.2.1",
+    "@types/webpack": "^4.4.25",
+    "@types/webpack-bundle-analyzer": "^2.13.1",
+    "@types/webpack-dev-middleware": "^2.0.2",
+    "@types/webpack-hot-middleware": "^2.16.5",
     "chalk": "^2.4.2",
     "consola": "^2.5.6",
     "enquirer": "^2.3.0",

packages/vue-app/types/index.d.ts

@@ -1,77 +1,78 @@
-import Vue from "vue";
-import VueRouter, { Route } from "vue-router";
-import { Store } from "vuex";
+import Vue from 'vue'
+import VueRouter, { Route } from 'vue-router'
+import { Store } from 'vuex'
 
 // augment typings of NodeJS.Process
-import "./process";
+import './process'
 
 // augment typings of Vue.js
-import "./vue";
+import './vue'
 
-type Dictionary<T> = { [key: string]: T };
+type Dictionary<T> = { [key: string]: T }
 
-type NuxtState = Dictionary<any>;
+type NuxtState = Dictionary<any>
 
 export interface Context {
-  app: Vue;
-  isClient: boolean;
-  isServer: boolean;
-  isStatic: boolean;
-  isDev: boolean;
-  isHMR: boolean;
-  route: Route;
-  store: Store<any>;
-  env: Dictionary<any>;
-  params: Route['params'];
-  query: Route['query'];
-  req: Request;
-  res: Response;
-  redirect(status: number, path: string, query?: Route['query']): void;
-  redirect(path: string, query?: Route['query']): void;
-  error(params: ErrorParams): void;
-  nuxtState: NuxtState;
-  beforeNuxtRender(fn: (params: { Components: VueRouter['getMatchedComponents'], nuxtState: NuxtState }) => void): void
+  app: Vue
+  isClient: boolean
+  isServer: boolean
+  isStatic: boolean
+  isDev: boolean
+  isHMR: boolean
+  route: Route
+  store: Store<any>
+  env: Dictionary<any>
+  params: Route['params']
+  payload: any
+  query: Route['query']
+  req: Request
+  res: Response
+  redirect (status: number, path: string, query?: Route['query']): void
+  redirect (path: string, query?: Route['query']): void
+  error (params: ErrorParams): void
+  nuxtState: NuxtState
+  beforeNuxtRender (fn: (params: { Components: VueRouter['getMatchedComponents'], nuxtState: NuxtState }) => void): void
 }
 
 export type Middleware = string | ((ctx: Context, cb: Function) => Promise<void> | void)
 
 export interface Transition {
-  name?: string;
-  mode?: string;
-  css?: boolean;
-  duration?: number;
-  type?: string;
-  enterClass?: string;
-  enterToClass?: string;
-  enterActiveClass?: string;
-  leaveClass?: string;
-  leaveToClass?: string;
-  leaveActiveClass?: string;
-  beforeEnter?(el: HTMLElement): void;
-  enter?(el: HTMLElement, done: Function): void;
-  afterEnter?(el: HTMLElement): void;
-  enterCancelled?(el: HTMLElement): void;
-  beforeLeave?(el: HTMLElement): void;
-  leave?(el: HTMLElement, done: Function): void;
-  afterLeave?(el: HTMLElement): void;
-  leaveCancelled?(el: HTMLElement): void;
+  name?: string
+  mode?: string
+  css?: boolean
+  duration?: number
+  type?: string
+  enterClass?: string
+  enterToClass?: string
+  enterActiveClass?: string
+  leaveClass?: string
+  leaveToClass?: string
+  leaveActiveClass?: string
+  beforeEnter?(el: HTMLElement): void
+  enter?(el: HTMLElement, done: Function): void
+  afterEnter?(el: HTMLElement): void
+  enterCancelled?(el: HTMLElement): void
+  beforeLeave?(el: HTMLElement): void
+  leave?(el: HTMLElement, done: Function): void
+  afterLeave?(el: HTMLElement): void
+  leaveCancelled?(el: HTMLElement): void
 }
 
 export interface ErrorParams {
-  statusCode?: number;
-  message?: string;
+  statusCode?: number
+  message?: string
 }
 
 export interface NuxtLoading extends Vue {
-  fail?(): NuxtLoading;
-  finish(): NuxtLoading;
-  increase?(num: number): NuxtLoading;
-  pause?(): NuxtLoading;
-  start(): NuxtLoading;
+  fail?(): NuxtLoading
+  finish(): NuxtLoading
+  increase?(num: number): NuxtLoading
+  pause?(): NuxtLoading
+  start(): NuxtLoading
 }
 
 export interface NuxtApp extends Vue {
-  $loading: NuxtLoading;
-  isOffline: boolean;
-  isOnline: boolean;
+  $loading: NuxtLoading
+  isOffline: boolean
+  isOnline: boolean
 }

packages/vue-app/types/process.d.ts

@@ -4,11 +4,11 @@
 
 declare namespace NodeJS {
   interface Process {
-    browser: boolean;
-    client: boolean;
-    mode: 'universal' | 'spa';
-    modern: boolean;
-    server: boolean;
-    static: boolean;
+    browser: boolean
+    client: boolean
+    mode: 'spa' | 'universal'
+    modern: boolean
+    server: boolean
+    static: boolean
   }
 }

packages/vue-app/types/vue.d.ts

@@ -2,29 +2,29 @@
  * Extends interfaces in Vue.js
  */
 
-import Vue, { ComponentOptions } from "vue";
-import { Route } from "vue-router";
-import { MetaInfo } from "vue-meta";
-import { Context, Middleware, Transition, NuxtApp } from "./index";
+import Vue, { ComponentOptions } from 'vue'
+import { Route } from 'vue-router'
+import { MetaInfo } from 'vue-meta'
+import { Context, Middleware, Transition, NuxtApp } from './index'
 
-declare module "vue/types/options" {
+declare module 'vue/types/options' {
   interface ComponentOptions<V extends Vue> {
-    asyncData?(ctx: Context): object | undefined;
-    fetch?(ctx: Context): Promise<void> | void;
-    head?: MetaInfo | (() => MetaInfo);
-    key?: string | ((to: Route) => string);
-    layout?: string | ((ctx: Context) => string);
-    loading?: boolean;
-    middleware?: Middleware | Middleware[];
-    scrollToTop?: boolean;
-    transition?: string | Transition | ((to: Route, from: Route) => string);
-    validate?(ctx: Context): Promise<boolean> | boolean;
-    watchQuery?: boolean | string[];
+    asyncData?(ctx: Context): object | undefined
+    fetch?(ctx: Context): Promise<void> | void
+    head?: MetaInfo | (() => MetaInfo)
+    key?: string | ((to: Route) => string)
+    layout?: string | ((ctx: Context) => string)
+    loading?: boolean
+    middleware?: Middleware | Middleware[]
+    scrollToTop?: boolean
+    transition?: string | Transition | ((to: Route, from: Route) => string)
+    validate?(ctx: Context): Promise<boolean> | boolean
+    watchQuery?: boolean | string[]
   }
 }
 
-declare module "vue/types/vue" {
+declare module 'vue/types/vue' {
   interface Vue {
-    $nuxt: NuxtApp;
+    $nuxt: NuxtApp
   }
 }

test/fixtures/typescript/nuxt.config.ts

@@ -1,4 +1,6 @@
-const config: any = {
+import NuxtConfiguration from '@nuxt/config'
+
+const config: NuxtConfiguration = {
   modules: [
     '~/modules/module'
   ],

test/types/tsconfig.json

@@ -1,15 +1,13 @@
 {
   "compilerOptions": {
-    "target": "es5",
-    "module": "es2015",
+    "target": "esnext",
     "moduleResolution": "node",
     "strict": true,
     "noEmit": true,
     "lib": [
-      "es5",
-      "dom",
-      "es2015.promise",
-      "es2015.core"
+      "esnext",
+      "esnext.asynciterable",
+      "dom"
     ]
   }
 }

yarn.lock

@@ -1398,6 +1398,11 @@
     universal-user-agent "^2.0.0"
     url-template "^2.0.8"
 
+"@types/anymatch@*":
+  version "1.3.1"
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