is-string - npm Package Compare versions

Comparing version 1.0.2 to 1.0.4

CHANGELOG.md

@@ -0,1 +1,9 @@
+1.0.4 / 2015-01-29
+=================
+  * If @@toStringTag is not present, use the old-school Object#toString test.
+
+1.0.3 / 2015-01-29
+=================
+  * Refactor to aid optimization of non-try/catch code.
+
 1.0.2 / 2015-01-29
@@ -2,0 +10,0 @@ =================

index.js

 'use strict';
 
 var strValue = String.prototype.valueOf;
-
-module.exports = function isString(value) {
-	if (typeof value === 'string') { return true; }
-	if (typeof value !== 'object') { return false; }
+var tryStringObject = function tryStringObject(value) {
 	try {
@@ -15,1 +12,10 @@ strValue.call(value);
 };
+var toStr = Object.prototype.toString;
+var strClass = '[object String]';
+var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
+
+module.exports = function isString(value) {
+	if (typeof value === 'string') { return true; }
+	if (typeof value !== 'object') { return false; }
+	return hasToStringTag ? tryStringObject(value) : toStr.call(value) === strClass;
+};

package.json

 {
 	"name": "is-string",
-	"version": "1.0.2",
+	"version": "1.0.4",
 	"author": "Jordan Harband",
@@ -5,0 +5,0 @@ "description": "Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.",

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17906

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Lines of code

91

increased by7.06%

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