Version 1

[yaffs-website] / node_modules / grunt-legacy-log / node_modules / lodash / lang / isNative.js

diff --git a/node_modules/grunt-legacy-log/node_modules/lodash/lang/isNative.js b/node_modules/grunt-legacy-log/node_modules/lodash/lang/isNative.js
new file mode 100644 (file)
index 0000000..3ad7144
--- /dev/null
+++ b/node_modules/grunt-legacy-log/node_modules/lodash/lang/isNative.js
@@ -0,0 +1,48 @@
+var isFunction = require('./isFunction'),
+    isObjectLike = require('../internal/isObjectLike');
+
+/** Used to detect host constructors (Safari > 5). */
+var reIsHostCtor = /^\[object .+?Constructor\]$/;
+
+/** Used for native method references. */
+var objectProto = Object.prototype;
+
+/** Used to resolve the decompiled source of functions. */
+var fnToString = Function.prototype.toString;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/** Used to detect if a method is native. */
+var reIsNative = RegExp('^' +
+  fnToString.call(hasOwnProperty).replace(/[\\^$.*+?()[\]{}|]/g, '\\$&')
+  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
+);
+
+/**
+ * Checks if `value` is a native function.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
+ * @example
+ *
+ * _.isNative(Array.prototype.push);
+ * // => true
+ *
+ * _.isNative(_);
+ * // => false
+ */
+function isNative(value) {
+  if (value == null) {
+    return false;
+  }
+  if (isFunction(value)) {
+    return reIsNative.test(fnToString.call(value));
+  }
+  return isObjectLike(value) && reIsHostCtor.test(value);
+}
+
+module.exports = isNative;