lib: macro-ify type checks

Increases the grep factor. Makes it easier to harmonize type checks
across the code base.

1 files changed, 5 insertions, 5 deletions

diff --git a/lib/crypto.js b/lib/crypto.js
index 90e139af32..c450f1c15f 100644
--- a/lib/crypto.js
+++ b/lib/crypto.js
@@ -43,7 +43,7 @@ var util = require('util');
 // to break them unnecessarily.
 function toBuf(str, encoding) {
   encoding = encoding || 'binary';
-  if (typeof str === 'string') {
+  if (IS_STRING(str)) {
     if (encoding === 'buffer')
       encoding = 'binary';
     str = new Buffer(str, encoding);
@@ -100,7 +100,7 @@ exports.createCredentials = function(options, context) {
   if (options.ciphers) c.context.setCiphers(options.ciphers);
 
   if (options.ca) {
-    if (Array.isArray(options.ca)) {
+    if (IS_ARRAY(options.ca)) {
       for (var i = 0, len = options.ca.length; i < len; i++) {
         c.context.addCACert(options.ca[i]);
       }
@@ -112,7 +112,7 @@ exports.createCredentials = function(options, context) {
   }
 
   if (options.crl) {
-    if (Array.isArray(options.crl)) {
+    if (IS_ARRAY(options.crl)) {
       for (var i = 0, len = options.crl.length; i < len; i++) {
         c.context.addCRL(options.crl[i]);
       }
@@ -198,7 +198,7 @@ Hash.prototype._flush = function(callback) {
 
 Hash.prototype.update = function(data, encoding) {
   encoding = encoding || exports.DEFAULT_ENCODING;
-  if (encoding === 'buffer' && typeof data === 'string')
+  if (encoding === 'buffer' && IS_STRING(data))
     encoding = 'binary';
   this._binding.update(data, encoding);
   return this;
@@ -539,7 +539,7 @@ DiffieHellman.prototype.setPrivateKey = function(key, encoding) {
 
 
 exports.pbkdf2 = function(password, salt, iterations, keylen, callback) {
-  if (typeof callback !== 'function')
+  if (!IS_FUNCTION(callback))
     throw new Error('No callback provided to pbkdf2');
 
   return pbkdf2(password, salt, iterations, keylen, callback);