@sanity/form-builder/dist/dts/hooks/usePrevious.d.ts

Sanity form builder

/**
 * A hook that returns the previous value of a component variable
 * This might be provided by React in the future (https://reactjs.org/docs/hooks-faq.html#how-to-get-the-previous-props-or-state)
 * @param value The value to track. Will return undefined for first render
 */
export declare function usePrevious<T>(value: T): T | undefined;
export declare function usePrevious<T>(value: T, initial: T): T;
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