overleaf/services/web/frontend/stories/hooks/use-scope.tsx

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import { merge } from 'lodash'
import { useLayoutEffect, useRef } from 'react'
/**
* Merge properties with the scope object, for use in Storybook stories
*/
export const useScope = (scope: Record<string, unknown>) => {
const scopeRef = useRef<typeof scope | null>(null)
if (scopeRef.current === null) {
scopeRef.current = scope
}
useLayoutEffect(() => {
if (scopeRef.current) {
for (const [path, value] of Object.entries(scopeRef.current)) {
let existingValue: typeof value | undefined
try {
existingValue = window.overleaf.unstable.store.get(path)
} catch {
// allowed not to exist
}
window.overleaf.unstable.store.set(path, merge(existingValue, value))
}
}
}, [])
}