embark/lib/core/logger.js

82 lines
2.2 KiB
JavaScript

require('colors');
let fs = require('./fs.js');
class Logger {
constructor(options) {
this.events = options.events || {emit: function(){}};
this.logLevels = ['error', 'warn', 'info', 'debug', 'trace'];
this.logLevel = options.logLevel || 'info';
this.logFunction = options.logFunction || console.log;
this.logFile = options.logFile;
}
}
Logger.prototype.writeToFile = function () {
if (!this.logFile) {
return;
}
fs.appendFileSync(this.logFile, "\n" + Array.from(arguments).join(' '));
};
Logger.prototype.error = function () {
if (!arguments.length || !(this.shouldLog('error'))) {
return;
}
this.events.emit("log", "error", ...arguments);
this.logFunction(...Array.from(arguments).map(t => t ? t.red : t));
this.writeToFile("[error]: ", ...arguments);
};
Logger.prototype.warn = function () {
if (!arguments.length || !(this.shouldLog('warn'))) {
return;
}
this.events.emit("log", "warning", ...arguments);
this.logFunction(...Array.from(arguments).map(t => t ? t.yellow : t));
this.writeToFile("[warning]: ", ...arguments);
};
Logger.prototype.info = function () {
if (!arguments.length || !(this.shouldLog('info'))) {
return;
}
this.events.emit("log", "info", ...arguments);
this.logFunction(...Array.from(arguments).map(t => t ? t.green : t));
this.writeToFile("[info]: ", ...arguments);
};
Logger.prototype.debug = function () {
if (!arguments.length || !(this.shouldLog('debug'))) {
return;
}
this.events.emit("log", "debug", ...arguments);
this.logFunction(...arguments);
this.writeToFile("[debug]: ", ...arguments);
};
Logger.prototype.trace = function () {
if (!arguments.length || !(this.shouldLog('trace'))) {
return;
}
this.events.emit("log", "trace", ...arguments);
this.logFunction(...arguments);
this.writeToFile("[trace]: ", ...arguments);
};
Logger.prototype.dir = function (txt) {
if (!txt || !(this.shouldLog('info'))) {
return;
}
this.events.emit("log", "dir", txt);
this.logFunction(txt);
this.writeToFile("[dir]: ");
this.writeToFile(txt);
};
Logger.prototype.shouldLog = function (level) {
return (this.logLevels.indexOf(level) <= this.logLevels.indexOf(this.logLevel));
};
module.exports = Logger;