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next.js/packages/next/bin/next-export
Benjamin Kniffler e6c3686629 multi-threaded export with nice progress indication (#5870)
This PR will

- allow nextjs export to use all available CPU cores for rendering & writing pages by using child_process
- make use of async-sema to allow each thread to concurrently write multiple paths
- show a fancy progress bar while processing pages (with non-TTY fallback for CI web consoles)

The performance gain for my MacBook with 4 CPU cores went from ~25 pages per second to ~75 pages per second. Beefy CI machines with lots of cores should profit even more.
2018-12-12 13:59:11 +01:00

69 lines
1.6 KiB
JavaScript
Executable file

#!/usr/bin/env node
import { resolve, join } from 'path'
import { existsSync } from 'fs'
import parseArgs from 'minimist'
import exportApp from '../export'
import { printAndExit } from '../server/lib/utils'
const argv = parseArgs(process.argv.slice(2), {
alias: {
h: 'help',
s: 'silent',
o: 'outdir'
},
boolean: ['h'],
default: {
s: false,
o: null
}
})
if (argv.help) {
console.log(`
Description
Exports the application for production deployment
Usage
$ next export [options] <dir>
<dir> represents where the compiled dist folder should go.
If no directory is provided, the 'out' folder will be created in the current directory.
Options
-h - list this help
-o - set the output dir (defaults to 'out')
-s - do not print any messages to console
`)
process.exit(0)
}
const dir = resolve(argv._[0] || '.')
// Check if pages dir exists and warn if not
if (!existsSync(dir)) {
printAndExit(`> No such directory exists as the project root: ${dir}`)
}
if (!existsSync(join(dir, 'pages'))) {
if (existsSync(join(dir, '..', 'pages'))) {
printAndExit('> No `pages` directory found. Did you mean to run `next` in the parent (`../`) directory?')
}
printAndExit('> Couldn\'t find a `pages` directory. Please create one under the project root')
}
const options = {
silent: argv.silent,
threads: argv.threads,
concurrency: argv.concurrency,
outdir: argv.outdir ? resolve(argv.outdir) : resolve(dir, 'out')
}
exportApp(dir, options)
.then(() => {
printAndExit('Export successful', 0)
})
.catch((err) => {
printAndExit(err)
})