50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
#!/usr/bin/env node
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/**
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* Dev supervisor — runs tsc --watch and watch-resources.js in parallel.
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*
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* Both processes terminate together when either exits or when the parent
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* receives SIGINT/SIGTERM. This avoids the problem with shell backgrounding
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* (`&`) where the watcher can outlive tsc and orphan.
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*/
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import { spawn } from 'node:child_process'
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import { resolve, dirname } from 'node:path'
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import { fileURLToPath } from 'node:url'
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import { createRequire } from 'node:module'
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const __dirname = dirname(fileURLToPath(import.meta.url))
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const root = resolve(__dirname, '..')
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const require = createRequire(import.meta.url)
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const tscBin = require.resolve('typescript/bin/tsc')
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const procs = [
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spawn('node', [resolve(__dirname, 'watch-resources.js')], {
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cwd: root, stdio: 'inherit'
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}),
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spawn(process.execPath, [tscBin, '--watch'], {
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cwd: root, stdio: 'inherit'
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})
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]
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function cleanup() {
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for (const p of procs) {
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try { p.kill() } catch {}
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}
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}
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// If either child exits, kill the other and exit with its code
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for (const p of procs) {
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p.on('exit', (code) => {
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cleanup()
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process.exit(code ?? 1)
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})
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}
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// Forward signals to children
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for (const sig of ['SIGINT', 'SIGTERM']) {
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process.on(sig, () => {
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cleanup()
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process.exit(0)
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})
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}
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