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Check for undefined window to support SSR #185

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Merged
bvaughn merged 1 commit into from
Mar 18, 2019
+2 −2
Merged

Check for undefined window to support SSR #185

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2 changes: 1 addition & 1 deletion src/createGridComponent.js
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Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,7 @@ const defaultItemKey = ({ columnIndex, data, rowIndex }) =>
let devWarningsOverscanCount = null;
let devWarningsTagName = null;
if (process.env.NODE_ENV !== 'production') {
if (typeof window.WeakSet !== 'undefined') {
if (typeof window !== 'undefined' && typeof window.WeakSet !== 'undefined') {
devWarningsOverscanCount = new WeakSet();
devWarningsTagName = new WeakSet();
}
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2 changes: 1 addition & 1 deletion src/createListComponent.js
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Expand Up @@ -112,7 +112,7 @@ const defaultItemKey = (index: number, data: any) => index;
let devWarningsDirection = null;
let devWarningsTagName = null;
if (process.env.NODE_ENV !== 'production') {
if (typeof window.WeakSet !== 'undefined') {
if (typeof window !== 'undefined' && typeof window.WeakSet !== 'undefined') {
devWarningsDirection = new WeakSet();
devWarningsTagName = new WeakSet();
}
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