blob: 7e10f859e0a689333a461736eb338cdbf2cf6170 (
plain)
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const runningProcs = new Set()
let handlersInstalled = false
const forwardedSignals = [
'SIGINT',
'SIGTERM',
]
const handleSignal = signal => {
for (const proc of runningProcs) {
proc.kill(signal)
}
}
const setupListeners = () => {
for (const signal of forwardedSignals) {
process.on(signal, handleSignal)
}
handlersInstalled = true
}
const cleanupListeners = () => {
if (runningProcs.size === 0) {
for (const signal of forwardedSignals) {
process.removeListener(signal, handleSignal)
}
handlersInstalled = false
}
}
const add = proc => {
runningProcs.add(proc)
if (!handlersInstalled) {
setupListeners()
}
proc.once('exit', () => {
runningProcs.delete(proc)
cleanupListeners()
})
}
module.exports = {
add,
handleSignal,
forwardedSignals,
}
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