Merge pull request clauderic#115 from levithomason/perf/lodash-omit

perf(lodash): use vanilla omit

Author: Claudéric Demers

src/SortableContainer/index.js

@@ -1,10 +1,9 @@
 import React, {Component, PropTypes} from 'react';
 import ReactDOM from 'react-dom';
-import omit from 'lodash/omit'
 import invariant from 'invariant';
 
 import Manager from '../Manager';
-import {closest, events, vendorPrefix, limit, getElementMargin, provideDisplayName} from '../utils';
+import {closest, events, vendorPrefix, limit, getElementMargin, provideDisplayName, omit} from '../utils';
 
 // Export Higher Order Sortable Container Component
 export default function sortableContainer(WrappedComponent, config = {withRef: false}) {

src/SortableElement/index.js

@@ -1,9 +1,8 @@
 import React, {Component, PropTypes} from 'react';
 import {findDOMNode} from 'react-dom';
-import omit from 'lodash/omit'
 import invariant from 'invariant';
 
-import { provideDisplayName } from '../utils'
+import { provideDisplayName, omit } from '../utils'
 
 // Export Higher Order Sortable Element Component
 export default function sortableElement (WrappedComponent, config = {withRef: false}) {

src/utils.js

@@ -10,6 +10,13 @@ export function arrayMove (arr, previousIndex, newIndex) {
     return array;
 }
 
+export function omit (obj, ...keysToOmit) {
+    return Object.keys(obj).reduce((acc, key) => {
+        if (keysToOmit.indexOf(key) === -1) acc[key] = obj[key];
+        return acc;
+    }, {});
+}
+
 export const events = {
 	start: ['touchstart', 'mousedown'],
 	move: ['touchmove', 'mousemove'],