Nuxt/lib/common/options.js

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import path from 'path'
import fs from 'fs'
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import _ from 'lodash'
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import consola from 'consola'
import { isPureObject, isUrl, guardDir } from '../common/utils'
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import modes from './modes'
import defaults from './nuxt.config'
// hasValue utility
const hasValue = v => typeof v === 'string' && v
const Options = {}
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export default Options
Options.from = function (_options) {
// Clone options to prevent unwanted side-effects
const options = Object.assign({}, _options)
// Normalize options
if (options.loading === true) {
delete options.loading
}
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if (
options.router &&
options.router.middleware &&
!Array.isArray(options.router.middleware)
) {
options.router.middleware = [options.router.middleware]
}
if (options.router && typeof options.router.base === 'string') {
options._routerBaseSpecified = true
}
if (typeof options.transition === 'string') {
options.transition = { name: options.transition }
}
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if (typeof options.layoutTransition === 'string') {
options.layoutTransition = { name: options.layoutTransition }
}
if (typeof options.extensions === 'string') {
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options.extensions = [options.extensions]
}
// Resolve rootDir
options.rootDir = hasValue(options.rootDir) ? path.resolve(options.rootDir) : process.cwd()
// Apply defaults by ${buildDir}/dist/build.config.js
// TODO: Unsafe operation.
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// const buildDir = options.buildDir || defaults.buildDir
// const buildConfig = resolve(options.rootDir, buildDir, 'build.config.js')
// if (existsSync(buildConfig)) {
// _.defaultsDeep(options, require(buildConfig))
// }
// Apply defaults
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_.defaultsDeep(options, defaults)
// Check srcDir and generate.dir excistence
const hasSrcDir = hasValue(options.srcDir)
const hasGenerateDir = hasValue(options.generate.dir)
// Resolve srcDir
options.srcDir = hasSrcDir
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? path.resolve(options.rootDir, options.srcDir)
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: options.rootDir
// Resolve buildDir
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options.buildDir = path.resolve(options.rootDir, options.buildDir)
// Protect rootDir against buildDir
guardDir(options, 'rootDir', 'buildDir')
if (hasGenerateDir) {
// Resolve generate.dir
options.generate.dir = path.resolve(options.rootDir, options.generate.dir)
// Protect rootDir against buildDir
guardDir(options, 'rootDir', 'generate.dir')
}
if (hasSrcDir) {
// Protect srcDir against buildDir
guardDir(options, 'srcDir', 'buildDir')
if (hasGenerateDir) {
// Protect srcDir against generate.dir
guardDir(options, 'srcDir', 'generate.dir')
}
}
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// Populate modulesDir
options.modulesDir = []
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.concat(options.modulesDir)
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.concat(path.join(options.nuxtDir, 'node_modules'))
.filter(hasValue)
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.map(dir => path.resolve(options.rootDir, dir))
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// Sanitize extensions
if (options.extensions.indexOf('js') === -1) {
options.extensions.unshift('js')
}
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if (options.extensions.indexOf('mjs') === -1) {
options.extensions.unshift('mjs')
}
// If app.html is defined, set the template path to the user template
if (options.appTemplatePath === undefined) {
options.appTemplatePath = path.resolve(options.buildDir, 'views/app.template.html')
if (fs.existsSync(path.join(options.srcDir, 'app.html'))) {
options.appTemplatePath = path.join(options.srcDir, 'app.html')
}
} else {
options.appTemplatePath = path.resolve(options.srcDir, options.appTemplatePath)
}
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// Ignore publicPath on dev
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/* istanbul ignore if */
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if (options.dev && isUrl(options.build.publicPath)) {
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options.build.publicPath = defaults.build.publicPath
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}
// If store defined, update store options to true unless explicitly disabled
if (
options.store !== false &&
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fs.existsSync(path.join(options.srcDir, options.dir.store)) &&
fs.readdirSync(path.join(options.srcDir, options.dir.store))
.find(filename => filename !== 'README.md' && filename[0] !== '.')
) {
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options.store = true
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}
// SPA loadingIndicator
if (options.loadingIndicator) {
// Normalize loadingIndicator
if (!isPureObject(options.loadingIndicator)) {
options.loadingIndicator = { name: options.loadingIndicator }
}
// Apply defaults
options.loadingIndicator = Object.assign(
{
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name: 'default',
color: (options.loading && options.loading.color) || '#D3D3D3',
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color2: '#F5F5F5',
background: (options.manifest && options.manifest.theme_color) || 'white',
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dev: options.dev,
loading: options.messages.loading
},
options.loadingIndicator
)
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}
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// Debug errors
if (options.debug === undefined) {
options.debug = options.dev
}
// Apply default hash to CSP option
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const csp = options.render.csp
const cspDefaults = {
hashAlgorithm: 'sha256',
allowedSources: undefined,
policies: undefined,
reportOnly: options.debug
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}
if (csp) {
options.render.csp = _.defaults(_.isObject(csp) ? csp : {}, cspDefaults)
}
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// cssSourceMap
if (options.build.cssSourceMap === undefined) {
options.build.cssSourceMap = options.dev
}
// babel cacheDirectory
if (options.build.babel.cacheDirectory === undefined) {
options.build.babel.cacheDirectory = options.dev
}
// vue config
const vueConfig = options.vue.config
if (vueConfig.silent === undefined) {
vueConfig.silent = !options.dev
}
if (vueConfig.performance === undefined) {
vueConfig.performance = options.dev
}
// merge custom env with variables
const eligibleEnvVariables = _.pick(process.env, Object.keys(process.env).filter(k => k.startsWith('NUXT_ENV_')))
Object.assign(options.env, eligibleEnvVariables)
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// Normalize ignore
options.ignore = options.ignore ? [].concat(options.ignore) : []
// Append ignorePrefix glob to ignore
if (typeof options.ignorePrefix === 'string') {
options.ignore.push(`**/${options.ignorePrefix}*.*`)
}
// Compression middleware legacy
if (options.render.gzip) {
consola.warn('render.gzip is deprecated and will be removed in a future version! Please switch to render.compressor')
options.render.compressor = options.render.gzip
delete options.render.gzip
}
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// Apply mode preset
const modePreset = modes[options.mode || 'universal'] || modes.universal
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_.defaultsDeep(options, modePreset)
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// If no server-side rendering, add appear true transition
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/* istanbul ignore if */
if (options.render.ssr === false && options.transition) {
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options.transition.appear = true
}
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// We assume the SPA fallback path is 404.html (for GitHub Pages, Surge, etc.)
if (options.generate.fallback === true) {
options.generate.fallback = '404.html'
}
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if (options.build.stats === 'none' || options.build.quiet === true) {
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options.build.stats = false
}
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// Vendor backward compatibility with nuxt 1.x
if (typeof options.build.vendor !== 'undefined') {
delete options.build.vendor
consola.warn('vendor has been deprecated due to webpack4 optimization')
}
// TODO: remove when mini-css-extract-plugin supports HMR
if (options.dev) {
options.build.extractCSS = false
}
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const loaders = options.build.loaders
const vueLoader = loaders.vue
if (vueLoader.productionMode === undefined) {
vueLoader.productionMode = !options.dev
}
const styleLoaders = [
'css', 'cssModules', 'less',
'sass', 'scss', 'stylus', 'vueStyle'
]
for (const name of styleLoaders) {
const loader = loaders[name]
if (loader && loader.sourceMap === undefined) {
loader.sourceMap = Boolean(options.build.cssSourceMap)
}
}
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// include SFCs in node_modules
options.build.transpile = [].concat(options.build.transpile || [])
.map(module => module instanceof RegExp ? module : new RegExp(module))
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if (options.build.quiet === true) {
consola.level = 0
}
return options
}