Refactor update.js and remove some lodash

.babelrc

@@ -1,3 +1,4 @@
 {
+  stage: "1",
   loose: "all"
 }

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)

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);