more work

node_modules/lodash/internal/createFlow.js

@@ -0,0 +1,64 @@
+var LodashWrapper = require('./LodashWrapper'),
+    getData = require('./getData'),
+    getFuncName = require('./getFuncName'),
+    isArray = require('../lang/isArray'),
+    isLaziable = require('./isLaziable');
+
+/** Used as the `TypeError` message for "Functions" methods. */
+var FUNC_ERROR_TEXT = 'Expected a function';
+
+/**
+ * Creates a `_.flow` or `_.flowRight` function.
+ *
+ * @private
+ * @param {boolean} [fromRight] Specify iterating from right to left.
+ * @returns {Function} Returns the new flow function.
+ */
+function createFlow(fromRight) {
+  return function() {
+    var length = arguments.length;
+    if (!length) {
+      return function() { return arguments[0]; };
+    }
+    var wrapper,
+        index = fromRight ? length : -1,
+        leftIndex = 0,
+        funcs = Array(length);
+
+    while ((fromRight ? index-- : ++index < length)) {
+      var func = funcs[leftIndex++] = arguments[index];
+      if (typeof func != 'function') {
+        throw new TypeError(FUNC_ERROR_TEXT);
+      }
+      var funcName = wrapper ? '' : getFuncName(func);
+      wrapper = funcName == 'wrapper' ? new LodashWrapper([]) : wrapper;
+    }
+    index = wrapper ? -1 : length;
+    while (++index < length) {
+      func = funcs[index];
+      funcName = getFuncName(func);
+
+      var data = funcName == 'wrapper' ? getData(func) : null;
+      if (data && isLaziable(data[0])) {
+        wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
+      } else {
+        wrapper = (func.length == 1 && isLaziable(func)) ? wrapper[funcName]() : wrapper.thru(func);
+      }
+    }
+    return function() {
+      var args = arguments;
+      if (wrapper && args.length == 1 && isArray(args[0])) {
+        return wrapper.plant(args[0]).value();
+      }
+      var index = 0,
+          result = funcs[index].apply(this, args);
+
+      while (++index < length) {
+        result = funcs[index].call(this, result);
+      }
+      return result;
+    };
+  };
+}
+
+module.exports = createFlow;