Fixed react warnings.

Author: Brad Wade

src/index.js

@@ -2,7 +2,6 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import Chart from 'chart.js';
 import isEqual from 'lodash/isEqual';
-import find from 'lodash/find';
 import keyBy from 'lodash/keyBy';
 
 const NODE_ENV = (typeof process !== 'undefined') && process.env && process.env.NODE_ENV;
@@ -15,6 +14,7 @@ class ChartComponent extends React.Component {
       PropTypes.object,
       PropTypes.func
     ]).isRequired,
+    datasetKeyProvider: PropTypes.func,
     getDatasetAtEvent: PropTypes.func,
     getElementAtEvent: PropTypes.func,
     getElementsAtEvent: PropTypes.func,
@@ -27,13 +27,11 @@ class ChartComponent extends React.Component {
     type: function(props, propName, componentName) {
       if(!Chart.controllers[props[propName]]) {
         return new Error(
-          'Invalid chart type `' + props[propName] + '` supplied to' +
-          ' `' + componentName + '`.'
+          `Invalid chart type \`${props[propName]}\` supplied to \`${componentName}\`.`
         );
       }
     },
-    width: PropTypes.number,
-    datasetKeyProvider: PropTypes.func
+    width: PropTypes.number
   }
 
   static defaultProps = {
@@ -69,7 +67,6 @@ class ChartComponent extends React.Component {
 
   shouldComponentUpdate(nextProps) {
     const {
-      redraw,
       type,
       options,
       plugins,
@@ -115,7 +112,7 @@ class ChartComponent extends React.Component {
 
   transformDataProp(props) {
     const { data } = props;
-    if (typeof(data) == 'function') {
+    if (typeof(data) === 'function') {
       const node = this.element;
       return data(node);
     } else {
@@ -176,7 +173,7 @@ class ChartComponent extends React.Component {
     var currentDatasets = this.getCurrentDatasets();
     currentDatasets.forEach(d => {
       this.datasets[this.props.datasetKeyProvider(d)] = d;
-    })
+    });
   }
 
   updateChart() {
@@ -237,7 +234,7 @@ class ChartComponent extends React.Component {
   }
 
   renderChart() {
-    const {options, legend, type, redraw, plugins} = this.props;
+    const {options, legend, type, plugins} = this.props;
     const node = this.element;
     const data = this.memoizeDataProps();
 
@@ -287,7 +284,7 @@ class ChartComponent extends React.Component {
   }
 
   render() {
-    const {height, width, onElementsClick, id} = this.props;
+    const {height, width, id} = this.props;
 
     return (
       <canvas