lib: Consistent error messages in all modules

This commit fixes some error messages that are not consistent with
some general rules which most of the error messages follow.

PR-URL: https://github.com/nodejs/node/pull/3374
Reviewed-By: Roman Reiss <me@silverwind.io>

1 files changed, 5 insertions, 5 deletions

diff --git a/lib/events.js b/lib/events.js
index ea3f2831eb..589dc4e79e 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -42,7 +42,7 @@ EventEmitter.init = function() {
 // that to be increased. Set to zero for unlimited.
 EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
   if (typeof n !== 'number' || n < 0 || isNaN(n))
-    throw new TypeError('n must be a positive number');
+    throw new TypeError('"n" argument must be a positive number');
   this._maxListeners = n;
   return this;
 };
@@ -132,7 +132,7 @@ EventEmitter.prototype.emit = function emit(type) {
     er = arguments[1];
     if (domain) {
       if (!er)
-        er = new Error('Uncaught, unspecified "error" event.');
+        er = new Error('Uncaught, unspecified "error" event');
       er.domainEmitter = this;
       er.domain = domain;
       er.domainThrown = false;
@@ -194,7 +194,7 @@ EventEmitter.prototype.addListener = function addListener(type, listener) {
   var existing;
 
   if (typeof listener !== 'function')
-    throw new TypeError('listener must be a function');
+    throw new TypeError('"listener" argument must be a function');
 
   events = this._events;
   if (!events) {
@@ -248,7 +248,7 @@ EventEmitter.prototype.on = EventEmitter.prototype.addListener;
 
 EventEmitter.prototype.once = function once(type, listener) {
   if (typeof listener !== 'function')
-    throw new TypeError('listener must be a function');
+    throw new TypeError('"listener" argument must be a function');
 
   var fired = false;
 
@@ -273,7 +273,7 @@ EventEmitter.prototype.removeListener =
       var list, events, position, i;
 
       if (typeof listener !== 'function')
-        throw new TypeError('listener must be a function');
+        throw new TypeError('"listener" argument must be a function');
 
       events = this._events;
       if (!events)