Nuxt/bin/nuxt-dev

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#!/usr/bin/env node
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const parseArgs = require('minimist')
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const consola = require('consola')
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const { version } = require('../package.json')
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const { Nuxt, Builder } = require('..')
const { loadNuxtConfig, getLatestHost } = require('./common/utils')
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const argv = parseArgs(process.argv.slice(2), {
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alias: {
h: 'help',
H: 'hostname',
p: 'port',
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c: 'config-file',
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s: 'spa',
u: 'universal',
v: 'version'
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},
boolean: ['h', 's', 'u', 'v'],
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string: ['H', 'c'],
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default: {
c: 'nuxt.config.js'
}
})
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if (argv.version) {
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process.stderr.write(version + '\n')
process.exit(0)
}
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if (argv.hostname === '') {
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consola.fatal('Provided hostname argument has no value')
}
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if (argv.help) {
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process.stderr.write(`
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Description
Starts the application in development mode (hot-code reloading, error
reporting, etc)
Usage
$ nuxt dev <dir> -p <port number> -H <hostname>
Options
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--port, -p A port number on which to start the application
--hostname, -H Hostname on which to start the application
--spa Launch in SPA mode
--universal Launch in Universal mode (default)
--config-file, -c Path to Nuxt.js config file (default: nuxt.config.js)
--help, -h Displays this message
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`)
process.exit(0)
}
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const config = () => {
// Force development mode for add hot reloading and watching changes
return Object.assign(loadNuxtConfig(argv), { dev: true })
}
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const errorHandler = (err, instance) => {
instance && instance.builder.watchServer()
consola.error(err)
}
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// Start dev
(function startDev(oldInstance) {
let nuxt, builder
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try {
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nuxt = new Nuxt(config())
builder = new Builder(nuxt)
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nuxt.hook('watch:fileChanged', (builder, fname) => {
consola.debug(`[${fname}] changed, Rebuilding the app...`)
startDev({ nuxt: builder.nuxt, builder })
})
} catch (err) {
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return errorHandler(err, oldInstance)
}
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// Get latest environment variables
const { port, host, socket } = getLatestHost(argv)
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return (
Promise.resolve()
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.then(() => oldInstance && oldInstance.nuxt.clearHook('watch:fileChanged'))
.then(() => oldInstance && oldInstance.builder.unwatch())
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// Start build
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.then(() => builder.build())
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// Close old nuxt no mater if build successfully
.catch((err) => {
oldInstance && oldInstance.nuxt.close()
// Jump to eventHandler
throw err
})
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.then(() => oldInstance && oldInstance.nuxt.close())
// Start listening
.then(() => nuxt.listen(port, host, socket))
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// Show ready message first time, others will be shown through WebpackBar
.then(() => !oldInstance && nuxt.showReady(false))
.then(() => builder.watchServer())
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// Handle errors
.catch(err => errorHandler(err, { builder, nuxt }))
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)
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})()