80 lines
2.1 KiB
JavaScript
80 lines
2.1 KiB
JavaScript
const { exec } = require ('child_process')
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const isWin = process.platform === 'win32'
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const express = require ('express')
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const fs = require ('fs')
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const app = express()
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const { PORT=4444 } = process.env
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const [,,port=PORT,scope='@capire'] = process.argv
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const cwd = __dirname
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// clean up on start (exit handler might not complete on Windows)
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exec(isWin ? 'del *.tgz' : 'rm *.tgz', {cwd})
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app.use('/-/:tarball', (req,res,next) => {
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console.debug ('GET', req.params)
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try {
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const { tarball } = req.params
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const [, pkg ] = /^\w+-(\w+)/.exec(tarball)
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fs.lstat(tarball,(err => {
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if (err) exec(`npm pack ../${pkg}`,{cwd},next)
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else next()
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}))
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} catch (e) {
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console.error(e)
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res.sendStatus(500)
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}
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})
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app.use('/-', express.static(__dirname))
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app.get('/*', (req,res)=>{
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const urlRegex = /^\/(@\w+)\/(\w+)/
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const url = decodeURIComponent(req.url)
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console.debug ('GET',url)
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try {
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if (!urlRegex.test(url)) return res.sendStatus(404)
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const [, scpe, pkg ] = urlRegex.exec(url)
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const package = require (`${scpe}/${pkg}/package.json`)
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const tarball = `${scpe.slice(1)}-${pkg}-${package.version}.tgz`
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// https://github.com/npm/registry/blob/master/docs/responses/package-metadata.md
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res.json({
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"name": package.name,
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"dist-tags": {
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"latest": package.version
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},
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"versions": {
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[package.version]: {
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"name": package.name,
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"version": package.version,
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"dist": {
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"tarball": `/-/${tarball}`
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},
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}
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},
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})
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} catch (e) {
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if (e.code === 'MODULE_NOT_FOUND') return res.sendStatus(404)
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console.error(e); throw e
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}
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})
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const server = app.listen(port, ()=>{
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const url = `http://localhost:${server.address().port}`
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console.log (`npm set ${scope}:registry=${url}`)
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exec(`npm set ${scope}:registry=${url}`)
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console.log (`${scope} registry listening on ${url}`)
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})
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const _exit = ()=>{
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server.close()
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exec(`npm conf rm "${scope}:registry"`, ()=> { process.exit() })
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}
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process.on ('SIGTERM',_exit)
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process.on ('SIGHUP',_exit)
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process.on ('SIGINT',_exit)
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process.on ('SIGUSR2',_exit)
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