From 8e82692be260018b6d3d376654da83f50b062276 Mon Sep 17 00:00:00 2001
From: Aaron Jensen <aaronjensen@gmail.com>
Date: Sat, 8 Aug 2015 23:32:52 -0700
Subject: [PATCH] Refactor update.js and remove some lodash

---
 .babelrc      |  1 +
 CHANGELOG.md  |  1 +
 lib/update.js | 27 ++++++++++++++++++---------
 3 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/.babelrc b/.babelrc
index 7f389c8..86a1a91 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,3 +1,4 @@
 {
+  stage: "1",
   loose: "all"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9020984..de485c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Change Log
 
 ## [unreleased]
+* Removed a couple lodash dependencies.
 
 ## [0.5.0]
 * Add `u.is` to test predicates in a single path. (https://github.com/substantial/updeep/issues/13)
diff --git a/lib/update.js b/lib/update.js
index 9db9271..5640197 100644
--- a/lib/update.js
+++ b/lib/update.js
@@ -1,11 +1,19 @@
-import reduce from 'lodash/collection/reduce';
-import isEmpty from 'lodash/lang/isEmpty';
-import assign from 'lodash/object/assign';
 import wrap from './wrap';
 
+function isEmpty(object) {
+  return !Object.keys(object).length;
+}
+
+function reduce(object, callback, initialValue) {
+  return Object.keys(object).reduce((acc, key) => {
+    return callback(acc, object[key], key);
+  }, initialValue);
+}
+
 function resolveUpdates(updates, object = {}) {
   return reduce(updates, (acc, value, key) => {
     let updatedValue = value;
+
     if (!Array.isArray(value) && value !== null && typeof value === 'object') {
       updatedValue = update(value, object[key]);
     } else if (typeof value === 'function') {
@@ -21,12 +29,13 @@ function resolveUpdates(updates, object = {}) {
 }
 
 function updateArray(updates, object) {
-  const newObj = [...object];
+  const newArray = [...object];
 
-  return reduce(updates, (acc, value, index) => {
-    acc[index] = value;
-    return acc;
-  }, newObj);
+  Object.keys(updates).forEach((key) => {
+    newArray[key] = updates[key];
+  });
+
+  return newArray;
 }
 
 /**
@@ -63,7 +72,7 @@ function update(updates, object, ...args) {
     return updateArray(resolvedUpdates, object);
   }
 
-  return assign({}, object, resolvedUpdates);
+  return { ...object, ...resolvedUpdates };
 }
 
 export default wrap(update);