Fix Grid ssr with maxElementSize util (#970)

Fix Grid ssr with maxElementSize util

package.json

@@ -35,7 +35,7 @@
     "start": "webpack-dev-server --hot --config webpack.config.dev.js",
     "test": "npm run test:jest",
     "test:jest": "jest --no-watchman --runInBand",
-    "test:ci": "cross-env JEST=ci jest --testPathPattern=jest.js --no-watchman --maxWorkers 2 --coverage && codecov",
+    "test:ci": "cross-env JEST=ci jest --testPathPattern=\".(jest|ssr).js\" --no-watchman --maxWorkers 2 --coverage && codecov",
     "watch": "watch 'clear && npm run test -s' source",
     "watch:jest": "jest --no-watchman --watch"
   },

source/Grid/Grid.ssr.js

@@ -0,0 +1,33 @@
+/**
+ * @flow
+ * @jest-environment node
+ */
+
+import React from 'react';
+import ReactDOMServer from 'react-dom/server';
+import Grid from './Grid';
+
+declare var test: any;
+declare var expect: any;
+
+test('should render Grid with dom server', () => {
+  const rendered = ReactDOMServer.renderToString(
+    <Grid
+      cellRenderer={({style, key, rowIndex, columnIndex}) => (
+        <div style={style} key={key}>
+          {rowIndex + ':' + columnIndex}
+        </div>
+      )}
+      columnCount={1000}
+      columnWidth={20}
+      height={500}
+      rowCount={1000}
+      rowHeight={20}
+      width={500}
+    />,
+  );
+
+  expect(rendered).toContain('0:0');
+  expect(rendered).toContain('24:24');
+  expect(rendered).not.toContain('25:25');
+});

source/Grid/utils/maxElementSize.js

@@ -3,12 +3,15 @@
 const DEFAULT_MAX_ELEMENT_SIZE = 1500000;
 const CHROME_MAX_ELEMENT_SIZE = 1.67771e7;
 
+const isBrowser = () => typeof window !== 'undefined';
+
 const isChrome = () => !!window.chrome && !!window.chrome.webstore;
 
 export const getMaxElementSize = (): number => {
-  if (isChrome()) {
-    return CHROME_MAX_ELEMENT_SIZE;
+  if (isBrowser()) {
+    if (isChrome()) {
+      return CHROME_MAX_ELEMENT_SIZE;
+    }
   }
-
   return DEFAULT_MAX_ELEMENT_SIZE;
 };