import { Connection } from 'vscode-languageserver';

interface JSONSchema {
    type?: string | string[];
    properties?: Record<string, JSONSchema>;
    required?: string[];
    additionalProperties?: boolean | JSONSchema;
    items?: JSONSchema | JSONSchema[];
    enum?: unknown[];
    description?: string;
    default?: unknown;
    allOf?: JSONSchema[];
    anyOf?: JSONSchema[];
    oneOf?: JSONSchema[];
    [key: string]: unknown;
}
/**
 * Simple in-memory cache for JSON schemas with 24h TTL.
 */
declare class SchemaCache {
    private connection;
    private cache;
    private readonly TTL;
    constructor(connection: Connection);
    getSchema(url: string): Promise<JSONSchema | undefined>;
    invalidate(url?: string): void;
}

export { type JSONSchema, SchemaCache };