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