Nuxt/packages/nuxi/src/cli-wrapper.ts

46 lines
1.2 KiB
TypeScript

/**
* This file is used to wrap the CLI entrypoint in a restartable process.
*/
import { fileURLToPath } from 'node:url'
import { fork } from 'node:child_process'
import type { ChildProcess } from 'node:child_process'
const cliEntry = new URL('../dist/cli-run.mjs', import.meta.url)
// Only enable wrapper for nuxt dev command
if (process.argv[2] === 'dev') {
process.env.__CLI_ARGV__ = JSON.stringify(process.argv)
startSubprocess()
} else {
import(cliEntry.href)
}
function startSubprocess () {
let childProc: ChildProcess | undefined
const onShutdown = () => {
if (childProc) {
childProc.kill()
childProc = undefined
}
}
process.on('exit', onShutdown)
process.on('SIGTERM', onShutdown) // Graceful shutdown
process.on('SIGINT', onShutdown) // Ctrl-C
process.on('SIGQUIT', onShutdown) // Ctrl-\
start()
function start () {
childProc = fork(fileURLToPath(cliEntry))
childProc.on('close', (code) => { if (code) { process.exit(code) } })
childProc.on('message', (message) => {
if ((message as { type: string })?.type === 'nuxt:restart') {
childProc?.kill()
startSubprocess()
}
})
}
}