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authorYosuke Furukawa <yosuke.furukawa@gmail.com>2015-04-29 02:03:05 +0900
committerYosuke Furukawa <yosuke.furukawa@gmail.com>2015-05-09 12:09:52 +0900
commitf9dd34d301ab385ae316769b85ef916f9b70b6f6 (patch)
tree9ce5db7bdff46e587535de5549eef7e02656f5d8 /tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNative.js
parent5883a59b21a97e8b7339f435c977155a2c29ba8d (diff)
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tools: replace closure-linter with eslint
PR-URL: https://github.com/iojs/io.js/pull/1539 Fixes: https://github.com/iojs/io.js/issues/1253 Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Trevor Norris <trev.norris@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com> Reviewed-By: Johan Bergström <bugs@bergstroem.nu> Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Diffstat (limited to 'tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNative.js')
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diff --git a/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNative.js b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNative.js
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+++ b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNative.js
@@ -0,0 +1,54 @@
+var escapeRegExp = require('../string/escapeRegExp'),
+ isObjectLike = require('../internal/isObjectLike');
+
+/** `Object#toString` result references. */
+var funcTag = '[object Function]';
+
+/** 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 resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
+ * of values.
+ */
+var objToString = objectProto.toString;
+
+/** Used to detect if a method is native. */
+var reIsNative = RegExp('^' +
+ escapeRegExp(objToString)
+ .replace(/toString|(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 (objToString.call(value) == funcTag) {
+ return reIsNative.test(fnToString.call(value));
+ }
+ return isObjectLike(value) && reIsHostCtor.test(value);
+}
+
+module.exports = isNative;