1 files changed, 34 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNaN.js b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNaN.js
new file mode 100644
index 0000000000..cf83d56637
--- /dev/null
+++ b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/lang/isNaN.js
@@ -0,0 +1,34 @@
+var isNumber = require('./isNumber');
+
+/**
+ * Checks if `value` is `NaN`.
+ *
+ * **Note:** This method is not the same as [`isNaN`](https://es5.github.io/#x15.1.2.4)
+ * which returns `true` for `undefined` and other non-numeric values.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
+ * @example
+ *
+ * _.isNaN(NaN);
+ * // => true
+ *
+ * _.isNaN(new Number(NaN));
+ * // => true
+ *
+ * isNaN(undefined);
+ * // => true
+ *
+ * _.isNaN(undefined);
+ * // => false
+ */
+function isNaN(value) {
+  // An `NaN` primitive is the only value that is not equal to itself.
+  // Perform the `toStringTag` check first to avoid errors with some host objects in IE.
+  return isNumber(value) && value != +value;
+}
+
+module.exports = isNaN;