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[DataGrid] Fix memory leak on grid unmount #6579

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merged 1 commit into from Oct 24, 2022
Merged

[DataGrid] Fix memory leak on grid unmount #6579

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2 changes: 2 additions & 0 deletions packages/grid/x-data-grid/src/hooks/core/useGridApiInitialization.ts
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Expand Up @@ -4,6 +4,7 @@ import { GridSignature } from '../utils/useGridApiEventHandler';
import { DataGridProcessedProps } from '../../models/props/DataGridProps';
import { GridApiCommon, GridCoreApi } from '../../models';
import { EventManager } from '../../utils/EventManager';
import { unstable_resetCreateSelectorCache } from '../../utils/createSelector';

const isSyntheticEvent = (event: any): event is React.SyntheticEvent => {
return event.isPropagationStopped !== undefined;
Expand Down Expand Up @@ -68,6 +69,7 @@ export function useGridApiInitialization<Api extends GridApiCommon>(
const api = apiRef.current;

return () => {
unstable_resetCreateSelectorCache(api.instanceId);
api.publishEvent('unmount');
};
}, [apiRef]);
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14 changes: 11 additions & 3 deletions packages/grid/x-data-grid/src/utils/createSelector.ts
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Expand Up @@ -2,8 +2,10 @@ import * as React from 'react';
import { createSelector as reselectCreateSelector, Selector, SelectorResultArray } from 'reselect';
import { buildWarning } from './warning';

type CacheKey = number | string;

interface CacheContainer {
cache: Record<number | string, Map<any[], any>> | null;
cache: Record<CacheKey, Map<any[], any>> | null;
}

export interface OutputSelector<State, Result> {
Expand Down Expand Up @@ -92,6 +94,12 @@ export const createSelector: CreateSelectorFunction = (...args: any) => {
};

// eslint-disable-next-line @typescript-eslint/naming-convention
export const unstable_resetCreateSelectorCache = () => {
cacheContainer.cache = null;
export const unstable_resetCreateSelectorCache = (cacheKey?: CacheKey) => {
if (typeof cacheKey !== 'undefined') {
if (cacheContainer.cache && cacheContainer.cache[cacheKey]) {
delete cacheContainer.cache[cacheKey];
}
} else {
cacheContainer.cache = null;
}
};