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File Content: `useStructureRev.ts`

import { useMemo } from 'react';
import { useCounter, usePrevious } from 'react-use';

import { DataFrame, compareArrayValues, compareDataFrameStructures } from '@grafana/data';

export function useStructureRev(frames: DataFrame[]) {
  const [structureRev, { inc }] = useCounter(1);
  const previousFrames = usePrevious(frames);

  // We need to increment structureRev when the number of series changes.
  // the function passed to useMemo runs during rendering, so when we get a different
  // amount of data, structureRev is incremented before we render it
  useMemo(() => {
    if (previousFrames && !compareArrayValues(frames, previousFrames, compareDataFrameStructures)) {
      inc();
    }
  }, [frames, previousFrames, inc]);

  return structureRev;
}

Name	Size	Permission
ExploreGraph.tsx	6372 bytes	0644
ExploreGraphLabel.tsx	790 bytes	0644
GraphContainer.tsx	4200 bytes	0644
exploreGraphStyleUtils.ts	2370 bytes	0644
useStructureRev.test.ts	4215 bytes	0644
useStructureRev.ts	760 bytes	0644
utils.ts	1116 bytes	0644

File Content: useStructureRev.ts

File Content: `useStructureRev.ts`