Bump to v4.0.0.

pad.js

@@ -0,0 +1,45 @@
+define(['./internal/createPadding', './internal/stringSize', './toInteger', './toString'], function(createPadding, stringSize, toInteger, toString) {
+
+  /* Built-in method references for those with the same name as other `lodash` methods. */
+  var nativeCeil = Math.ceil,
+      nativeFloor = Math.floor;
+
+  /**
+   * Pads `string` on the left and right sides if it's shorter than `length`.
+   * Padding characters are truncated if they can't be evenly divided by `length`.
+   *
+   * @static
+   * @memberOf _
+   * @category String
+   * @param {string} [string=''] The string to pad.
+   * @param {number} [length=0] The padding length.
+   * @param {string} [chars=' '] The string used as padding.
+   * @returns {string} Returns the padded string.
+   * @example
+   *
+   * _.pad('abc', 8);
+   * // => '  abc   '
+   *
+   * _.pad('abc', 8, '_-');
+   * // => '_-abc_-_'
+   *
+   * _.pad('abc', 3);
+   * // => 'abc'
+   */
+  function pad(string, length, chars) {
+    string = toString(string);
+    length = toInteger(length);
+
+    var strLength = stringSize(string);
+    if (!length || strLength >= length) {
+      return string;
+    }
+    var mid = (length - strLength) / 2,
+        leftLength = nativeFloor(mid),
+        rightLength = nativeCeil(mid);
+
+    return createPadding('', leftLength, chars) + string + createPadding('', rightLength, chars);
+  }
+
+  return pad;
+});