Bump to v3.4.0.

function/flow.js

@@ -1,8 +1,4 @@
-import arrayEvery from '../internal/arrayEvery';
-import baseIsFunction from '../internal/baseIsFunction';
-
-/** Used as the `TypeError` message for "Functions" methods. */
-var FUNC_ERROR_TEXT = 'Expected a function';
+import createComposer from '../internal/createComposer';
 
 /**
  * Creates a function that returns the result of invoking the provided
@@ -16,37 +12,14 @@ var FUNC_ERROR_TEXT = 'Expected a function';
  * @returns {Function} Returns the new function.
  * @example
  *
- * function add(x, y) {
- *   return x + y;
- * }
- *
  * function square(n) {
  *   return n * n;
  * }
  *
- * var addSquare = _.flow(add, square);
+ * var addSquare = _.flow(_.add, square);
  * addSquare(1, 2);
  * // => 9
  */
-function flow() {
-  var funcs = arguments,
-      length = funcs.length;
-
-  if (!length) {
-    return function() { return arguments[0]; };
-  }
-  if (!arrayEvery(funcs, baseIsFunction)) {
-    throw new TypeError(FUNC_ERROR_TEXT);
-  }
-  return function() {
-    var index = 0,
-        result = funcs[index].apply(this, arguments);
-
-    while (++index < length) {
-      result = funcs[index].call(this, result);
-    }
-    return result;
-  };
-}
+var flow = createComposer();
 
 export default flow;