Fixed global require eslint issue.

src/SizeMe.js

@@ -4,11 +4,7 @@ import React, { Children, Component, PropTypes } from 'react';
 import ReactDOM from 'react-dom';
 import invariant from 'invariant';
 import { throttle } from 'lodash';
-
-// Lazily require to not cause bug
-// https://github.com/ctrlplusb/react-sizeme/issues/6
-// import resizeDetector from './resizeDetector';
-const resizeDetector = () => require(`./resizeDetector`).default;
+import resizeDetector from './resizeDetector';
 
 const defaultConfig = {
   monitorWidth: true,

src/resizeDetector.js

@@ -1,7 +1,18 @@
 import createResizeDetector from 'element-resize-detector';
 
-const resizeDetector = createResizeDetector({
-  strategy: `scroll`
-});
+let instance;
+
+// Lazily require to not cause bug
+// https://github.com/ctrlplusb/react-sizeme/issues/6
+// import resizeDetector from './resizeDetector';
+function resizeDetector() {
+  if (!instance) {
+    instance = createResizeDetector({
+      strategy: `scroll`
+    });
+  }
+
+  return instance;
+}
 
 export default resizeDetector;