Extensions. Add 'use strict' for object and string

index.js

@@ -4,6 +4,7 @@
   https://github.com/Yegorich555/ytech-js-extensions
 */
 /* global define */
+'use strict'
 
 require('./lib/array/index.js');
 require('./lib/date/index.js');

lib/object/equal/index.js

@@ -7,6 +7,7 @@
  * @return {Boolean} true if equal
  */
 module.exports = function(v1, v2, options) {
+    'use strict'
     var EqualFalseResult = require('./equalFalseResult.js')
     var EqualOptions = require('./equalOptions.js');
 

lib/string/equal.js

@@ -5,6 +5,7 @@
  * @return {Boolean} true if equal
  */
 module.exports = function(v) {
+    'use strict'
     if (!this && !v)
         return true;
     if (!this || !v)

lib/string/index.js

@@ -1,5 +1,8 @@
-String.prototype.equal = require('./equal')
-String.prototype.toUpperCaseFirst = require('./toUpperCaseFirst')
-String.prototype.toLowerCaseFirst = require('./toLowerCaseFirst')
-String.prototype.toCamelCase = require('./toCamelCase')
-String.prototype.fromCamelCase = require('./fromCamelCase')
+(function() {
+    'use strict'
+    String.prototype.equal = require('./equal')
+    String.prototype.toUpperCaseFirst = require('./toUpperCaseFirst')
+    String.prototype.toLowerCaseFirst = require('./toLowerCaseFirst')
+    String.prototype.toCamelCase = require('./toCamelCase')
+    String.prototype.fromCamelCase = require('./fromCamelCase')
+}())