Remove lodash dependency

1 files changed, 25 insertions, 18 deletions

diff --git a/lib/utils/logger.js b/lib/utils/logger.js
index fc9c394..3bde904 100644
--- a/lib/utils/logger.js
+++ b/lib/utils/logger.js
@@ -1,21 +1,22 @@
-var _ = require('lodash');
+var is = require('is');
 var util = require('util');
 var color = require('bash-color');
+var Immutable = require('immutable');
 
-var LEVELS = {
+var LEVELS = Immutable.Map({
     DEBUG: 0,
     INFO: 1,
     WARN: 2,
     ERROR: 3,
     DISABLED: 10
-};
+});
 
-var COLORS = {
+var COLORS = Immutable.Map({
     DEBUG: color.purple,
     INFO: color.cyan,
     WARN: color.yellow,
     ERROR: color.red
-};
+});
 
 function Logger(write, logLevel) {
     if (!(this instanceof Logger)) return new Logger(write, logLevel);
@@ -29,17 +30,18 @@ function Logger(write, logLevel) {
 
     this.setLevel(logLevel || 'info');
 
-    _.bindAll(this);
-
     // Create easy-to-use method like "logger.debug.ln('....')"
-    _.each(_.omit(LEVELS, 'DISABLED'), function(level, levelKey) {
+    LEVELS.forEach(function(level, levelKey) {
+        if (levelKey === 'DISABLED') {
+            return;
+        }
         levelKey = levelKey.toLowerCase();
 
-        this[levelKey] = _.partial(this.log, level);
-        this[levelKey].ln = _.partial(this.logLn, level);
-        this[levelKey].ok = _.partial(this.ok, level);
-        this[levelKey].fail = _.partial(this.fail, level);
-        this[levelKey].promise = _.partial(this.promise, level);
+        this[levelKey] =            this.log.bind(this, level);
+        this[levelKey].ln =         this.logLn.bind(this, level);
+        this[levelKey].ok =         this.ok.bind(this, level);
+        this[levelKey].fail =       this.fail.bind(this, level);
+        this[levelKey].promise =    this.promise.bind(this, level);
     }, this);
 }
 
@@ -49,7 +51,11 @@ function Logger(write, logLevel) {
     @param {String} logLevel
 */
 Logger.prototype.setLevel = function(logLevel) {
-    if (_.isString(logLevel)) logLevel = LEVELS[logLevel.toUpperCase()];
+    if (is.string(logLevel)) {
+        logLevel = logLevel.toUpperCase();
+        logLevel = LEVELS.get(logLevel);
+    }
+
     this.logLevel = logLevel;
 };
 
@@ -60,7 +66,7 @@ Logger.prototype.setLevel = function(logLevel) {
 */
 Logger.prototype.write = function(msg) {
     msg = msg.toString();
-    this.lastChar = _.last(msg);
+    this.lastChar = msg[msg.length - 1];
     return this._write(msg);
 };
 
@@ -88,12 +94,14 @@ Logger.prototype.writeLn = function(msg) {
 Logger.prototype.log = function(level) {
     if (level < this.logLevel) return;
 
-    var levelKey = _.findKey(LEVELS, function(v) { return v == level; });
+    var levelKey = LEVELS.findKey(function(v) {
+        return v === level;
+    });
     var args = Array.prototype.slice.apply(arguments, [1]);
     var msg = this.format.apply(this, args);
 
     if (this.lastChar == '\n') {
-        msg = COLORS[levelKey](levelKey.toLowerCase()+':')+' '+msg;
+        msg = COLORS.get(levelKey)(levelKey.toLowerCase()+':')+' '+msg;
     }
 
     return this.write(msg);
@@ -151,6 +159,5 @@ Logger.prototype.promise = function(level, p) {
 };
 
 Logger.LEVELS = LEVELS;
-Logger.COLORS = COLORS;
 
 module.exports =  Logger;