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authorFlorian Dold <florian.dold@gmail.com>2016-11-03 01:33:53 +0100
committerFlorian Dold <florian.dold@gmail.com>2016-11-03 01:33:53 +0100
commitd1291f67551c58168af43698a359cb5ddfd266b0 (patch)
tree55a13ed29fe1915e3f42f1b1b7038dafa2e975a7 /node_modules/lodash/isLength.js
parentd0a0695fb5d34996850723f7d4b1b59c3df909c2 (diff)
node_modules
Diffstat (limited to 'node_modules/lodash/isLength.js')
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diff --git a/node_modules/lodash/isLength.js b/node_modules/lodash/isLength.js
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+/** Used as references for various `Number` constants. */
+var MAX_SAFE_INTEGER = 9007199254740991;
+
+/**
+ * Checks if `value` is a valid array-like length.
+ *
+ * **Note:** This method is loosely based on
+ * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
+ * @example
+ *
+ * _.isLength(3);
+ * // => true
+ *
+ * _.isLength(Number.MIN_VALUE);
+ * // => false
+ *
+ * _.isLength(Infinity);
+ * // => false
+ *
+ * _.isLength('3');
+ * // => false
+ */
+function isLength(value) {
+ return typeof value == 'number' &&
+ value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
+}
+
+module.exports = isLength;