export type JSONSchema = {
    $schema?: string;
    type: string;
    properties?: Record<string, JSONSchema>;
    required?: string[];
    additionalProperties?: boolean;
    title?: string;
    [key: string]: unknown;
};
export declare class SchemaCacheService {
    private cache;
    private readonly cacheDir;
    constructor(cacheDir?: string);
    has(cid: string): boolean;
    private fetchSchema;
    get(cid: string): Promise<JSONSchema>;
}
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