concurrently
Version:
Run commands concurrently
48 lines (47 loc) • 1.94 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.KillOnSignal = void 0;
const operators_1 = require("rxjs/operators");
const SIGNALS = ['SIGINT', 'SIGTERM', 'SIGHUP'];
/**
* Watches the main concurrently process for signals and sends the same signal down to each spawned
* command.
*/
class KillOnSignal {
process;
abortController;
constructor({ process, abortController, }) {
this.process = process;
this.abortController = abortController;
}
handle(commands) {
let caughtSignal;
const signalListener = (signal) => {
caughtSignal = signal;
this.abortController?.abort();
commands.forEach((command) => command.kill(signal));
};
SIGNALS.forEach((signal) => this.process.on(signal, signalListener));
return {
commands: commands.map((command) => {
const closeStream = command.close.pipe((0, operators_1.map)((exitInfo) => {
const exitCode = caughtSignal === 'SIGINT' ? 0 : exitInfo.exitCode;
return { ...exitInfo, exitCode };
}));
// Return a proxy so that mutations happen on the original Command object.
// If either `Object.assign()` or `Object.create()` were used, it'd be hard to
// reflect the mutations on Command objects referenced by previous flow controllers.
return new Proxy(command, {
get(target, prop) {
return prop === 'close' ? closeStream : target[prop];
},
});
}),
onFinish: () => {
// Avoids MaxListenersExceededWarning when running programmatically
SIGNALS.forEach((signal) => this.process.off(signal, signalListener));
},
};
}
}
exports.KillOnSignal = KillOnSignal;