import type { OmpModelLevel } from './sdk-settings-types';
export declare function safeUrl(value: unknown, field: string): string;
export declare function emptyHeaders(value: unknown, field: string): Record<string, never>;
export declare function rejectUnknown(value: Record<string, unknown>, allowed: ReadonlySet<string>, field: string): void;
export declare function levelValue(value: unknown, field: string): OmpModelLevel;
export declare function enumValue<const T extends readonly string[]>(value: unknown, allowed: T, field: string): T[number];
export declare function falseOnly(value: unknown, field: string): false;
export declare function booleanValue(value: unknown, field: string): boolean;
export declare function nonEmptyString(value: unknown, field: string): string;
export declare function nonNegativeNumber(value: unknown, field: string): number;
export declare function assertProviderId(provider: string, field: string): void;
export declare function stableValue(value: unknown): unknown;
export declare function deepFreeze<T>(value: T): Readonly<T>;
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