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nuxt.ts
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nuxt.ts
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import { join, normalize, relative, resolve } from 'pathe'
import { createDebugger, createHooks } from 'hookable'
import type { LoadNuxtOptions } from '@nuxt/kit'
import { addComponent, addPlugin, addVitePlugin, addWebpackPlugin, installModule, loadNuxtConfig, logger, nuxtCtx, resolveAlias, resolveFiles, resolvePath, tryResolveModule } from '@nuxt/kit'
import type { Nuxt, NuxtHooks, NuxtOptions } from 'nuxt/schema'
import escapeRE from 'escape-string-regexp'
import fse from 'fs-extra'
import { withoutLeadingSlash } from 'ufo'
/* eslint-disable import/no-restricted-paths */
import pagesModule from '../pages/module'
import metaModule from '../head/module'
import componentsModule from '../components/module'
import importsModule from '../imports/module'
/* eslint-enable */
import { distDir, pkgDir } from '../dirs'
import { version } from '../../package.json'
import { ImportProtectionPlugin, vueAppPatterns } from './plugins/import-protection'
import { UnctxTransformPlugin } from './plugins/unctx'
import type { TreeShakeComposablesPluginOptions } from './plugins/tree-shake'
import { TreeShakeComposablesPlugin } from './plugins/tree-shake'
import { DevOnlyPlugin } from './plugins/dev-only'
import { LayerAliasingPlugin } from './plugins/layer-aliasing'
import { addModuleTranspiles } from './modules'
import { initNitro } from './nitro'
import schemaModule from './schema'
export function createNuxt (options: NuxtOptions): Nuxt {
const hooks = createHooks<NuxtHooks>()
const nuxt: Nuxt = {
_version: version,
options,
hooks,
callHook: hooks.callHook,
addHooks: hooks.addHooks,
hook: hooks.hook,
ready: () => initNuxt(nuxt),
close: () => Promise.resolve(hooks.callHook('close', nuxt)),
vfs: {},
apps: {}
}
return nuxt
}
async function initNuxt (nuxt: Nuxt) {
// Register user hooks
nuxt.hooks.addHooks(nuxt.options.hooks)
// Set nuxt instance for useNuxt
nuxtCtx.set(nuxt)
nuxt.hook('close', () => nuxtCtx.unset())
// Add nuxt types
nuxt.hook('prepare:types', (opts) => {
opts.references.push({ types: 'nuxt' })
opts.references.push({ path: resolve(nuxt.options.buildDir, 'types/plugins.d.ts') })
// Add vue shim
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') })
opts.references.push({ path: resolve(nuxt.options.buildDir, 'types/app.config.d.ts') })
for (const layer of nuxt.options._layers) {
const declaration = join(layer.cwd, 'index.d.ts')
if (fse.existsSync(declaration)) {
opts.references.push({ path: declaration })
}
}
})
// Add import protection
const config = {
rootDir: nuxt.options.rootDir,
// Exclude top-level resolutions by plugins
exclude: [join(nuxt.options.rootDir, 'index.html')],
patterns: vueAppPatterns(nuxt)
}
addVitePlugin(() => ImportProtectionPlugin.vite(config))
addWebpackPlugin(() => ImportProtectionPlugin.webpack(config))
if (nuxt.options.experimental.localLayerAliases) {
// Add layer aliasing support for ~, ~~, @ and @@ aliases
addVitePlugin(() => LayerAliasingPlugin.vite({
sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client,
// skip top-level layer (user's project) as the aliases will already be correctly resolved
layers: nuxt.options._layers.slice(1)
}))
addWebpackPlugin(() => LayerAliasingPlugin.webpack({
sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client,
// skip top-level layer (user's project) as the aliases will already be correctly resolved
layers: nuxt.options._layers.slice(1),
transform: true
}))
}
nuxt.hook('modules:done', () => {
// Add unctx transform
const options = {
sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client,
transformerOptions: nuxt.options.optimization.asyncTransforms
}
addVitePlugin(() => UnctxTransformPlugin.vite(options))
addWebpackPlugin(() => UnctxTransformPlugin.webpack(options))
// Add composable tree-shaking optimisations
const serverTreeShakeOptions: TreeShakeComposablesPluginOptions = {
sourcemap: nuxt.options.sourcemap.server,
composables: nuxt.options.optimization.treeShake.composables.server
}
if (Object.keys(serverTreeShakeOptions.composables).length) {
addVitePlugin(() => TreeShakeComposablesPlugin.vite(serverTreeShakeOptions), { client: false })
addWebpackPlugin(() => TreeShakeComposablesPlugin.webpack(serverTreeShakeOptions), { client: false })
}
const clientTreeShakeOptions: TreeShakeComposablesPluginOptions = {
sourcemap: nuxt.options.sourcemap.client,
composables: nuxt.options.optimization.treeShake.composables.client
}
if (Object.keys(clientTreeShakeOptions.composables).length) {
addVitePlugin(() => TreeShakeComposablesPlugin.vite(clientTreeShakeOptions), { server: false })
addWebpackPlugin(() => TreeShakeComposablesPlugin.webpack(clientTreeShakeOptions), { server: false })
}
})
if (!nuxt.options.dev) {
// DevOnly component tree-shaking - build time only
addVitePlugin(() => DevOnlyPlugin.vite({ sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client }))
addWebpackPlugin(() => DevOnlyPlugin.webpack({ sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client }))
}
// TODO: [Experimental] Avoid emitting assets when flag is enabled
if (nuxt.options.experimental.noScripts && !nuxt.options.dev) {
nuxt.hook('build:manifest', async (manifest) => {
for (const file in manifest) {
if (manifest[file].resourceType === 'script') {
await fse.rm(resolve(nuxt.options.buildDir, 'dist/client', withoutLeadingSlash(nuxt.options.app.buildAssetsDir), manifest[file].file), { force: true })
manifest[file].file = ''
}
}
})
}
// Transpile #app if it is imported directly from subpath export
nuxt.options.build.transpile.push('nuxt/app')
// Transpile layers within node_modules
nuxt.options.build.transpile.push(
...nuxt.options._layers.filter(i => i.cwd.includes('node_modules')).map(i => i.cwd as string)
)
// Init user modules
await nuxt.callHook('modules:before')
const modulesToInstall = []
const watchedPaths = new Set<string>()
const specifiedModules = new Set<string>()
for (const _mod of nuxt.options.modules) {
const mod = Array.isArray(_mod) ? _mod[0] : _mod
if (typeof mod !== 'string') { continue }
const modPath = await resolvePath(resolveAlias(mod))
specifiedModules.add(modPath)
}
// Automatically register user modules
for (const config of nuxt.options._layers.map(layer => layer.config).reverse()) {
const layerModules = await resolveFiles(config.srcDir, [
`${config.dir?.modules || 'modules'}/*{${nuxt.options.extensions.join(',')}}`,
`${config.dir?.modules || 'modules'}/*/index{${nuxt.options.extensions.join(',')}}`
])
for (const mod of layerModules) {
watchedPaths.add(relative(config.srcDir, mod))
if (specifiedModules.has(mod)) { continue }
specifiedModules.add(mod)
modulesToInstall.push(mod)
}
}
// Register user and then ad-hoc modules
modulesToInstall.push(...nuxt.options.modules, ...nuxt.options._modules)
// Add <NuxtWelcome>
addComponent({
name: 'NuxtWelcome',
priority: 10, // built-in that we do not expect the user to override
filePath: (await tryResolveModule('@nuxt/ui-templates/templates/welcome.vue'))!
})
addComponent({
name: 'NuxtLayout',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/layout')
})
// Add <NuxtErrorBoundary>
addComponent({
name: 'NuxtErrorBoundary',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/nuxt-error-boundary')
})
// Add <ClientOnly>
addComponent({
name: 'ClientOnly',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/client-only')
})
// Add <DevOnly>
addComponent({
name: 'DevOnly',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/dev-only')
})
// Add <ServerPlaceholder>
addComponent({
name: 'ServerPlaceholder',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/server-placeholder')
})
// Add <NuxtLink>
addComponent({
name: 'NuxtLink',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/nuxt-link')
})
// Add <NuxtLoadingIndicator>
addComponent({
name: 'NuxtLoadingIndicator',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/nuxt-loading-indicator')
})
// Add <NuxtClientFallback>
if (nuxt.options.experimental.clientFallback) {
addComponent({
name: 'NuxtClientFallback',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/client-fallback.client'),
mode: 'client'
})
addComponent({
name: 'NuxtClientFallback',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/client-fallback.server'),
mode: 'server'
})
}
// Add <NuxtIsland>
if (nuxt.options.experimental.componentIslands) {
addComponent({
name: 'NuxtIsland',
priority: 10, // built-in that we do not expect the user to override
filePath: resolve(nuxt.options.appDir, 'components/nuxt-island')
})
}
// Add prerender payload support
if (nuxt.options._generate && nuxt.options.experimental.payloadExtraction === undefined) {
console.warn('Using experimental payload extraction for full-static output. You can opt-out by setting `experimental.payloadExtraction` to `false`.')
nuxt.options.experimental.payloadExtraction = true
}
if (!nuxt.options.dev && nuxt.options.experimental.payloadExtraction) {
addPlugin(resolve(nuxt.options.appDir, 'plugins/payload.client'))
}
// Add experimental cross-origin prefetch support using Speculation Rules API
if (nuxt.options.experimental.crossOriginPrefetch) {
addPlugin(resolve(nuxt.options.appDir, 'plugins/cross-origin-prefetch.client'))
}
// Add experimental page reload support
if (nuxt.options.experimental.emitRouteChunkError === 'automatic') {
addPlugin(resolve(nuxt.options.appDir, 'plugins/chunk-reload.client'))
}
// Add experimental session restoration support
if (nuxt.options.experimental.restoreState) {
addPlugin(resolve(nuxt.options.appDir, 'plugins/restore-state.client'))
}
// Add experimental automatic view transition api support
if (nuxt.options.experimental.viewTransition) {
addPlugin(resolve(nuxt.options.appDir, 'plugins/view-transitions.client'))
}
// Add experimental support for custom types in JSON payload
if (nuxt.options.experimental.renderJsonPayloads) {
nuxt.hooks.hook('modules:done', () => {
addPlugin(resolve(nuxt.options.appDir, 'plugins/revive-payload.client'))
addPlugin(resolve(nuxt.options.appDir, 'plugins/revive-payload.server'))
})
}
// Track components used to render for webpack
if (nuxt.options.builder === '@nuxt/webpack-builder') {
addPlugin(resolve(nuxt.options.appDir, 'plugins/preload.server'))
}
// Add nuxt app debugger
if (nuxt.options.debug) {
addPlugin(resolve(nuxt.options.appDir, 'plugins/debug'))
}
for (const m of modulesToInstall) {
if (Array.isArray(m)) {
await installModule(m[0], m[1])
} else {
await installModule(m, {})
}
}
await nuxt.callHook('modules:done')
nuxt.hooks.hook('builder:watch', (event, path) => {
// Local module patterns
if (watchedPaths.has(path)) {
return nuxt.callHook('restart', { hard: true })
}
// User provided patterns
for (const pattern of nuxt.options.watch) {
if (typeof pattern === 'string') {
if (pattern === path) { return nuxt.callHook('restart') }
continue
}
if (pattern.test(path)) { return nuxt.callHook('restart') }
}
// Core Nuxt files: app.vue, error.vue and app.config.ts
const isFileChange = ['add', 'unlink'].includes(event)
if (isFileChange && path.match(/^(app|error|app\.config)\.(js|ts|mjs|jsx|tsx|vue)$/i)) {
console.info(`\`${path}\` ${event === 'add' ? 'created' : 'removed'}`)
return nuxt.callHook('restart')
}
})
// Normalize windows transpile paths added by modules
nuxt.options.build.transpile = nuxt.options.build.transpile.map(t => typeof t === 'string' ? normalize(t) : t)
addModuleTranspiles()
// Init nitro
await initNitro(nuxt)
await nuxt.callHook('ready', nuxt)
}
export async function loadNuxt (opts: LoadNuxtOptions): Promise<Nuxt> {
const options = await loadNuxtConfig(opts)
// Temporary until finding better placement for each
options.appDir = options.alias['#app'] = resolve(distDir, 'app')
options._majorVersion = 3
// Nuxt DevTools is currently opt-in
if (options.devtools === true || (options.devtools && options.devtools.enabled !== false)) {
if (await import('./features').then(r => r.ensurePackageInstalled(options.rootDir, '@nuxt/devtools', options.modulesDir))) {
options._modules.push('@nuxt/devtools')
} else {
logger.warn('Failed to install `@nuxt/devtools`, please install it manually, or disable `devtools` in `nuxt.config`')
}
}
// Add core modules
options._modules.push(pagesModule, metaModule, componentsModule)
options._modules.push([importsModule, {
transform: {
include: options._layers
.filter(i => i.cwd && i.cwd.includes('node_modules'))
.map(i => new RegExp(`(^|\\/)${escapeRE(i.cwd!.split('node_modules/').pop()!)}(\\/|$)(?!node_modules\\/)`))
}
}])
options._modules.push(schemaModule)
options.modulesDir.push(resolve(options.workspaceDir, 'node_modules'))
options.modulesDir.push(resolve(pkgDir, 'node_modules'))
options.build.transpile.push('@nuxt/ui-templates')
options.alias['vue-demi'] = resolve(options.appDir, 'compat/vue-demi')
options.alias['@vue/composition-api'] = resolve(options.appDir, 'compat/capi')
if (options.telemetry !== false && !process.env.NUXT_TELEMETRY_DISABLED) {
options._modules.push('@nuxt/telemetry')
}
const nuxt = createNuxt(options)
if (nuxt.options.debug) {
createDebugger(nuxt.hooks, { tag: 'nuxt' })
}
if (opts.ready !== false) {
await nuxt.ready()
}
return nuxt
}