export declare function assertPlainRecord(value: unknown, name: string): asserts value is Record<string, unknown>;
export declare function assertExactKeys(value: Record<string, unknown>, required: readonly string[], optional?: readonly string[], name?: string): void;
export declare function assertIJson(value: unknown, path?: string, ancestors?: WeakSet<object>): void;
export declare function assertUnicodeScalarString(value: string, path: string): void;
export declare function assertUtcMilliseconds(value: string, name: string): void;
export declare function assertHex(value: string, length: number, name: string): void;
export declare function assertSortedUnique(values: string[], name: string): void;
export declare function sortedUnique(values: readonly string[], name: string): string[];
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