4.0.0 Beta 1

src/utilities/logging.js

@@ -0,0 +1,73 @@
+'use strict';
+
+export default class Logger {
+	constructor(parent, name, level) {
+		this.parent = parent;
+		this.name = name;
+
+		this.enabled = true;
+		this.level = level || (parent && parent.level) || Logger.DEFAULT_LEVEL;
+
+		this.children = {};
+	}
+
+	get(name, level) {
+		if ( ! this.children[name] )
+			this.children[name] = new Logger(this, (this.name ? `${this.name}.${name}` : name), level);
+
+		return this.children[name];
+	}
+
+	debug(...args) {
+		return this.invoke(Logger.DEBUG, args);
+	}
+
+	info(...args) {
+		return this.invoke(Logger.INFO, args);
+	}
+
+	warn(...args) {
+		return this.invoke(Logger.WARN, args);
+	}
+
+	error(...args) {
+		return this.invoke(Logger.ERROR, args);
+	}
+
+	/* eslint no-console: "off" */
+	invoke(level, args) {
+		if ( ! this.enabled || level < this.level )
+			return;
+
+		const message = Array.prototype.slice.call(args);
+
+		if ( this.name )
+			message.unshift(`%cFFZ [%c${this.name}%c]:%c`, 'color:#755000; font-weight:bold', '', 'color:#755000; font-weight:bold', '');
+		else
+			message.unshift('%cFFZ:%c', 'color:#755000; font-weight:bold', '');
+
+		if ( level === Logger.DEBUG )
+			console.info(...message);
+
+		else if ( level === Logger.INFO )
+			console.info(...message);
+
+		else if ( level === Logger.WARN )
+			console.warn(...message);
+
+		else if ( level === Logger.ERROR )
+			console.error(...message);
+
+		else
+			console.log(...message);
+	}
+}
+
+
+Logger.DEFAULT_LEVEL = 2;
+
+Logger.DEBUG = 1;
+Logger.INFO = 2;
+Logger.WARN = 4;
+Logger.ERROR = 8;
+Logger.OFF = 99;