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var events = require('events');
var debug = require('debug')('nodemon');
var util = require('util');
var Bus = function () {
events.EventEmitter.call(this);
};
util.inherits(Bus, events.EventEmitter);
var bus = new Bus();
// /*
var collected = {};
bus.on('newListener', function (event) {
debug('bus new listener: %s (%s)', event, bus.listeners(event).length);
if (!collected[event]) {
collected[event] = true;
bus.on(event, function () {
debug('bus emit: %s', event);
});
}
});
// */
// proxy process messages (if forked) to the bus
process.on('message', function (event) {
debug('process.message(%s)', event);
bus.emit(event);
});
var emit = bus.emit;
// if nodemon was spawned via a fork, allow upstream communication
// via process.send
if (process.send) {
bus.emit = function (event, data) {
process.send({ type: event, data: data });
emit.apply(bus, arguments);
};
}
module.exports = bus;