export declare function deleteProperties(obj: Record<string, unknown>, props: string[]): {
    [x: string]: unknown;
};
export declare function omit<T extends object, K extends keyof T>(obj: T, keysToOmit: K[]): Omit<T, K>;
export declare const spreadIfNotUndefined: <T>(key: string, value: T | undefined) => Record<string, T>;
export declare const spreadIfDefined: <T>(key: string, value: T | undefined | null) => Record<string, T>;
export declare function deleteProps<T extends Record<string, unknown>, K extends keyof T>(obj: T, prop: K[]): Omit<T, K>;
export declare function sanitizeObjectForPostgresql<T>(input: T): T;
export declare function applyFunctionToValuesSync<T>(obj: unknown, apply: (str: string) => unknown): T;
export declare function applyFunctionToValues<T>(obj: unknown, apply: (str: string) => Promise<unknown>): Promise<T>;
export declare const isObject: (obj: unknown) => obj is Record<string, unknown>;
export type MakeKeyNonNullableAndRequired<T extends object, K extends keyof T> = T & {
    [P in K]-?: NonNullable<T[P]>;
};
export declare function groupBy<T, K extends string | number | symbol>(items: T[], keySelector: (item: T) => K): Record<K, T[]>;
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