semaphore/bin/build-now-json.js

112 lines
3.2 KiB
JavaScript

// create the now.json file
// Unfortunately this has to be re-run periodically, as AFAICT there is no way to
// give Zeit a script and tell them to run that, instead of using a static now.json file.
import path from 'path'
import fs from 'fs'
import { promisify } from 'util'
import { routes } from '../__sapper__/service-worker'
import cloneDeep from 'lodash-es/cloneDeep'
import inlineScriptChecksum from '../src/inline-script/checksum'
import { sapperInlineScriptChecksums } from '../src/server/sapperInlineScriptChecksums'
const writeFile = promisify(fs.writeFile)
const JSON_TEMPLATE = {
'version': 2,
'env': {
'NODE_ENV': 'production'
},
'builds': [
{
'src': 'package.json',
'use': '@now/static-build',
'config': {
'distDir': '__sapper__/export'
}
}
],
'routes': [
{
'src': '^/service-worker\\.js$',
'headers': {
'cache-control': 'public,max-age=0'
}
},
{
'src': '^/(report\\.html|stats\\.json)$',
'headers': {
'cache-control': 'public,max-age=3600'
},
'dest': 'client/$1'
},
{
'src': '^/client/.*\\.(js|css|map)$',
'headers': {
'cache-control': 'public,max-age=31536000,immutable'
}
},
{
'src': '^/.*\\.(png|css|json|svg|jpe?g|map|txt)$',
'headers': {
'cache-control': 'public,max-age=3600'
}
}
]
}
const HTML_HEADERS = {
'cache-control': 'public,max-age=3600',
'content-security-policy': `script-src 'self' ` +
`${[inlineScriptChecksum].concat(sapperInlineScriptChecksums).map(_ => `'sha256-${_}'`).join(' ')}; ` +
`worker-src 'self'; style-src 'self' 'unsafe-inline'; frame-src 'none'; object-src 'none'; manifest-src 'self'`,
'referrer-policy': 'no-referrer',
'strict-transport-security': 'max-age=15552000; includeSubDomains',
'x-content-type-options': 'nosniff',
'x-download-options': 'noopen',
'x-frame-options': 'SAMEORIGIN',
'x-xss-protection': '1; mode=block'
}
async function main () {
let json = cloneDeep(JSON_TEMPLATE)
let exportDir = path.resolve(__dirname, '../__sapper__/export')
for (let { pattern } of routes) {
let route = {
src: pattern.source,
headers: cloneDeep(HTML_HEADERS)
}
// remove all the regexy stuff in the regex
let filename = pattern.source.replace(/^\^\\\//, '').replace(/(\\\/)?\?\$$/, '').replace(/\\\//g, '/')
// try two different possible paths
let filePath = [
`${filename}.html`,
path.join(filename, 'index.html')
].map(_ => path.resolve(exportDir, _)).find(_ => fs.existsSync(_))
if (!filePath) { // dynamic route, e.g. /accounts/<accountId/
// serve calls to dynamic routes via the generic "service worker" index.html,
// since we can't generate the dynamic content using Zeit's static server
route.dest = 'service-worker-index.html'
}
json.routes.push(route)
}
// push a generic route to handle everything else
json.routes.push({
src: '^/(.*)',
headers: cloneDeep(HTML_HEADERS)
})
await writeFile(path.resolve(__dirname, '../now.json'), JSON.stringify(json, null, ' '), 'utf8')
}
main().catch(err => {
console.error(err)
process.exit(1)
})