export declare const normalizeKey: (prop: PropertyKey) => string;
export declare const isArrayIndexKey: (k: string) => boolean;
export declare const getParentAndKey: (root: any, path: string[]) => [any, string] | null;
export declare const setAtPath: (root: any, path: string[], value: any) => void;
export declare const deleteAtPath: (root: any, path: string[]) => void;
export declare const ensureParents: (root: any, path: string[]) => void;
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