export declare function objectForEachKey<T extends Record<string, unknown>>(obj: T, callback: (key: keyof T) => void): void;
export declare function objectMapKey<T extends Record<string, unknown>, Return>(obj: T, callback: (key: keyof T) => Return): Return[];
export declare function objectReduceKey<T extends Record<string, unknown>, Accumulator>(obj: T, callback: (acc: Accumulator, key: keyof T) => Accumulator, initial: Accumulator): Accumulator;
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