export declare function parseStrictJsonObject(content: string, label: string): Record<string, unknown>;
export declare function object(value: unknown, label: string, required?: string[], optional?: string[]): Record<string, unknown>;
export declare function text(value: unknown, label: string): string;
export declare function multilineText(value: unknown, label: string, options?: {
    allowEmpty?: boolean;
}): string;
export declare function digest(value: unknown, label: string): string;
export declare function integer(value: unknown, label: string, minimum?: number): number;
export declare function literal<T extends string | number | boolean>(value: unknown, expected: T, label: string): T;
export declare function oneOf<const T extends readonly string[]>(value: unknown, allowed: T, label: string): T[number];
export declare function stringSet(value: unknown, label: string, options?: {
    allowEmpty?: boolean;
}): string[];
export declare function arrayOf<T>(value: unknown, label: string, parse: (item: unknown, label: string) => T, options?: {
    allowEmpty?: boolean;
}): T[];
export declare function optionalArrayOf<T>(value: unknown, label: string, parse: (item: unknown, label: string) => T): T[];
export declare function unknownSemantics(record: Record<string, unknown>, key: string, label: string): unknown;
export declare function invalid(label: string, reason: string): Error;