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next.js/packages/next/build/index.js
2018-11-04 23:04:54 +01:00

82 lines
2.2 KiB
JavaScript

import { join } from 'path'
import promisify from '../lib/promisify'
import fs from 'fs'
import webpack from 'webpack'
import nanoid from 'nanoid'
import loadConfig from 'next-server/next-config'
import { PHASE_PRODUCTION_BUILD, BUILD_ID_FILE } from 'next-server/constants'
import getBaseWebpackConfig from './webpack'
const access = promisify(fs.access)
const writeFile = promisify(fs.writeFile)
export default async function build (dir, conf = null) {
const config = loadConfig(PHASE_PRODUCTION_BUILD, dir, conf)
const distDir = join(dir, config.distDir)
let buildId = await config.generateBuildId() // defaults to a uuid
if (buildId == null) {
// nanoid is a small url-safe uuid generator
buildId = nanoid()
}
try {
await access(dir, (fs.constants || fs).W_OK)
} catch (err) {
console.error(`> Failed, build directory is not writeable. https://err.sh/zeit/next.js/build-dir-not-writeable`)
throw err
}
try {
const configs = await Promise.all([
getBaseWebpackConfig(dir, { buildId, isServer: false, config }),
getBaseWebpackConfig(dir, { buildId, isServer: true, config })
])
await runCompiler(configs)
await writeBuildId(distDir, buildId)
} catch (err) {
console.error(`> Failed to build`)
throw err
}
}
function runCompiler (compiler) {
return new Promise(async (resolve, reject) => {
const webpackCompiler = await webpack(await compiler)
webpackCompiler.run((err, stats) => {
if (err) {
console.log({...err})
console.log(...stats.errors)
return reject(err)
}
let buildFailed = false
for (const stat of stats.stats) {
for (const error of stat.compilation.errors) {
buildFailed = true
console.error('ERROR', error)
console.error('ORIGINAL ERROR', error.error)
}
for (const warning of stat.compilation.warnings) {
buildFailed = true
console.warn('WARNING', warning)
}
}
if (buildFailed) {
return reject(new Error('Webpack errors'))
}
resolve()
})
})
}
async function writeBuildId (distDir, buildId) {
const buildIdPath = join(distDir, BUILD_ID_FILE)
await writeFile(buildIdPath, buildId, 'utf8')
}