pixelbattle/node_modules/nodemon/lib/nodemon.js

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