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Lukas Nowy
301
express-server/node_modules/nodemon/lib/nodemon.js
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301
express-server/node_modules/nodemon/lib/nodemon.js
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var debug = require('debug')('nodemon');
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var path = require('path');
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var monitor = require('./monitor');
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var cli = require('./cli');
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var version = require('./version');
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var util = require('util');
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var utils = require('./utils');
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var bus = utils.bus;
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var help = require('./help');
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var config = require('./config');
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var spawn = require('./spawn');
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const defaults = require('./config/defaults')
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var eventHandlers = {};
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// this is fairly dirty, but theoretically sound since it's part of the
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// stable module API
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config.required = utils.isRequired;
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function nodemon(settings) {
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bus.emit('boot');
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nodemon.reset();
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// allow the cli string as the argument to nodemon, and allow for
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// `node nodemon -V app.js` or just `-V app.js`
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if (typeof settings === 'string') {
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settings = settings.trim();
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if (settings.indexOf('node') !== 0) {
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if (settings.indexOf('nodemon') !== 0) {
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settings = 'nodemon ' + settings;
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}
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settings = 'node ' + settings;
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}
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settings = cli.parse(settings);
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}
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// set the debug flag as early as possible to get all the detailed logging
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if (settings.verbose) {
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utils.debug = true;
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}
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if (settings.help) {
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process.stdout._handle.setBlocking(true); // nodejs/node#6456
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console.log(help(settings.help));
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if (!config.required) {
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process.exit(0);
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}
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}
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if (settings.version) {
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version().then(function (v) {
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console.log(v);
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if (!config.required) {
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process.exit(0);
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}
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});
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return;
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}
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// nodemon tools like grunt-nodemon. This affects where
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// the script is being run from, and will affect where
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// nodemon looks for the nodemon.json files
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if (settings.cwd) {
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// this is protection to make sure we haven't dont the chdir already...
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// say like in cli/parse.js (which is where we do this once already!)
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if (process.cwd() !== path.resolve(config.system.cwd, settings.cwd)) {
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process.chdir(settings.cwd);
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}
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}
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const cwd = process.cwd();
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config.load(settings, function (config) {
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if (!config.options.dump && !config.options.execOptions.script &&
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config.options.execOptions.exec === 'node') {
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if (!config.required) {
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console.log(help('usage'));
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process.exit();
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}
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return;
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}
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// before we print anything, update the colour setting on logging
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utils.colours = config.options.colours;
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// always echo out the current version
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utils.log.info(version.pinned);
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const cwd = process.cwd();
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if (config.options.cwd) {
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utils.log.detail('process root: ' + cwd);
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}
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config.loaded.map(file => file.replace(cwd, '.')).forEach(file => {
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utils.log.detail('reading config ' + file);
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});
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if (config.options.stdin && config.options.restartable) {
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// allow nodemon to restart when the use types 'rs\n'
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process.stdin.resume();
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process.stdin.setEncoding('utf8');
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process.stdin.on('data', data => {
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const str = data.toString().trim().toLowerCase();
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// if the keys entered match the restartable value, then restart!
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if (str === config.options.restartable) {
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bus.emit('restart');
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} else if (data.charCodeAt(0) === 12) { // ctrl+l
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console.clear();
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}
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});
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} else if (config.options.stdin) {
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// so let's make sure we don't eat the key presses
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// but also, since we're wrapping, watch out for
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// special keys, like ctrl+c x 2 or '.exit' or ctrl+d or ctrl+l
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var ctrlC = false;
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var buffer = '';
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process.stdin.on('data', function (data) {
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data = data.toString();
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buffer += data;
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const chr = data.charCodeAt(0);
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// if restartable, echo back
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if (chr === 3) {
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if (ctrlC) {
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process.exit(0);
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}
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ctrlC = true;
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return;
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} else if (buffer === '.exit' || chr === 4) { // ctrl+d
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process.exit();
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} else if (chr === 13 || chr === 10) { // enter / carriage return
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buffer = '';
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} else if (chr === 12) { // ctrl+l
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console.clear();
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buffer = '';
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}
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ctrlC = false;
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});
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if (process.stdin.setRawMode) {
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process.stdin.setRawMode(true);
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}
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}
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if (config.options.restartable) {
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utils.log.info('to restart at any time, enter `' +
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config.options.restartable + '`');
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}
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if (!config.required) {
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const restartSignal = config.options.signal === 'SIGUSR2' ? 'SIGHUP' : 'SIGUSR2';
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process.on(restartSignal, nodemon.restart);
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utils.bus.on('error', () => {
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utils.log.fail((new Error().stack));
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});
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utils.log.detail((config.options.restartable ? 'or ' : '') + 'send ' +
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restartSignal + ' to ' + process.pid + ' to restart');
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}
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const ignoring = config.options.monitor.map(function (rule) {
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if (rule.slice(0, 1) !== '!') {
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return false;
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}
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rule = rule.slice(1);
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// don't notify of default ignores
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if (defaults.ignoreRoot.indexOf(rule) !== -1) {
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return false;
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return rule.slice(3).slice(0, -3);
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}
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if (rule.startsWith(cwd)) {
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return rule.replace(cwd, '.');
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}
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return rule;
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}).filter(Boolean).join(' ');
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if (ignoring) utils.log.detail('ignoring: ' + ignoring);
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utils.log.info('watching: ' + config.options.monitor.map(function (rule) {
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return rule.slice(0, 1) !== '!' ? rule : false;
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}).filter(Boolean).join(' '));
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utils.log.detail('watching extensions: ' + (config.options.execOptions.ext || '(all)'));
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if (config.options.dump) {
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utils.log._log('log', '--------------');
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utils.log._log('log', 'node: ' + process.version);
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utils.log._log('log', 'nodemon: ' + version.pinned);
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utils.log._log('log', 'command: ' + process.argv.join(' '));
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utils.log._log('log', 'cwd: ' + cwd);
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utils.log._log('log', ['OS:', process.platform, process.arch].join(' '));
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utils.log._log('log', '--------------');
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utils.log._log('log', util.inspect(config, { depth: null }));
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utils.log._log('log', '--------------');
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if (!config.required) {
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process.exit();
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}
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return;
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}
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config.run = true;
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if (config.options.stdout === false) {
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nodemon.on('start', function () {
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nodemon.stdout = bus.stdout;
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nodemon.stderr = bus.stderr;
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bus.emit('readable');
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});
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}
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if (config.options.events && Object.keys(config.options.events).length) {
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Object.keys(config.options.events).forEach(function (key) {
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utils.log.detail('bind ' + key + ' -> `' +
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config.options.events[key] + '`');
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nodemon.on(key, function () {
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if (config.options && config.options.events) {
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spawn(config.options.events[key], config,
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[].slice.apply(arguments));
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}
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});
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});
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}
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monitor.run(config.options);
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});
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return nodemon;
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}
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nodemon.restart = function () {
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utils.log.status('restarting child process');
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bus.emit('restart');
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return nodemon;
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};
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nodemon.addListener = nodemon.on = function (event, handler) {
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if (!eventHandlers[event]) { eventHandlers[event] = []; }
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eventHandlers[event].push(handler);
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bus.on(event, handler);
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return nodemon;
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};
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nodemon.once = function (event, handler) {
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if (!eventHandlers[event]) { eventHandlers[event] = []; }
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eventHandlers[event].push(handler);
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bus.once(event, function () {
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debug('bus.once(%s)', event);
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eventHandlers[event].splice(eventHandlers[event].indexOf(handler), 1);
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handler.apply(this, arguments);
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});
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return nodemon;
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};
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nodemon.emit = function () {
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bus.emit.apply(bus, [].slice.call(arguments));
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return nodemon;
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};
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nodemon.removeAllListeners = function (event) {
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// unbind only the `nodemon.on` event handlers
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Object.keys(eventHandlers).filter(function (e) {
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return event ? e === event : true;
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}).forEach(function (event) {
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eventHandlers[event].forEach(function (handler) {
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bus.removeListener(event, handler);
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eventHandlers[event].splice(eventHandlers[event].indexOf(handler), 1);
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});
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});
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return nodemon;
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};
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nodemon.reset = function (done) {
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bus.emit('reset', done);
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};
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bus.on('reset', function (done) {
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debug('reset');
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nodemon.removeAllListeners();
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monitor.run.kill(true, function () {
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utils.reset();
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config.reset();
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config.run = false;
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if (done) {
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done();
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}
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});
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});
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// expose the full config
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nodemon.config = config;
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module.exports = nodemon;
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