Bump to v4.0.0.

toInteger.js

@@ -0,0 +1,45 @@
+define(['./toNumber'], function(toNumber) {
+
+  /** Used as references for various `Number` constants. */
+  var INFINITY = 1 / 0,
+      MAX_INTEGER = 1.7976931348623157e+308;
+
+  /**
+   * Converts `value` to an integer.
+   *
+   * **Note:** This function is loosely based on [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).
+   *
+   * @static
+   * @memberOf _
+   * @category Lang
+   * @param {*} value The value to convert.
+   * @returns {number} Returns the converted integer.
+   * @example
+   *
+   * _.toInteger(3);
+   * // => 3
+   *
+   * _.toInteger(Number.MIN_VALUE);
+   * // => 0
+   *
+   * _.toInteger(Infinity);
+   * // => 1.7976931348623157e+308
+   *
+   * _.toInteger('3');
+   * // => 3
+   */
+  function toInteger(value) {
+    if (!value) {
+      return value === 0 ? value : 0;
+    }
+    value = toNumber(value);
+    if (value === INFINITY || value === -INFINITY) {
+      var sign = (value < 0 ? -1 : 1);
+      return sign * MAX_INTEGER;
+    }
+    var remainder = value % 1;
+    return value === value ? (remainder ? value - remainder : value) : 0;
+  }
+
+  return toInteger;
+});