export declare function record(value: unknown, field: string): Record<string, unknown>;
export declare function closedRecord(value: unknown, field: string, fields: readonly string[]): Record<string, unknown>;
export declare function stringField(source: Record<string, unknown>, field: string, parent?: string): string;
export declare function exact(value: unknown, expected: unknown, field: string): void;
export declare function integer(value: unknown, field: string, min: number, max?: number): number;
export declare function exactStringSet(value: unknown, field: string, expected: readonly string[]): readonly string[];
export declare function sameOriginUrl(value: unknown, field: string, origin: string, protocols?: readonly string[]): string;