import { GraphQLClient } from "../graphql/client";
import { GitLabVersionDetector, GitLabInstanceInfo } from "./GitLabVersionDetector";
import { SchemaIntrospector, SchemaInfo } from "./SchemaIntrospector";
import { TokenScopeInfo } from "./TokenScopeDetector";
export declare class ConnectionManager {
    private static instance;
    private client;
    private versionDetector;
    private schemaIntrospector;
    private instanceInfo;
    private schemaInfo;
    private tokenScopeInfo;
    private isInitialized;
    private currentInstanceUrl;
    private introspectedInstanceUrl;
    private introspectionPromises;
    private static introspectionCache;
    private static readonly CACHE_TTL;
    private constructor();
    static getInstance(): ConnectionManager;
    initialize(instanceUrl?: string): Promise<void>;
    ensureIntrospected(): Promise<void>;
    private doIntrospection;
    getClient(): GraphQLClient;
    getInstanceClient(instanceUrl?: string, authHeaders?: Record<string, string>): GraphQLClient;
    getVersionDetector(): GitLabVersionDetector;
    getSchemaIntrospector(): SchemaIntrospector;
    getInstanceInfo(): GitLabInstanceInfo;
    getSchemaInfo(): SchemaInfo;
    getCurrentInstanceUrl(): string | null;
    isFeatureAvailable(feature: keyof GitLabInstanceInfo["features"]): boolean;
    getTier(): string;
    getVersion(): string;
    isWidgetAvailable(widgetType: string): boolean;
    getTokenScopeInfo(): TokenScopeInfo | null;
    refreshTokenScopes(): Promise<boolean>;
    private detectVersionViaREST;
    private getDefaultFeatures;
    reinitialize(newInstanceUrl: string): Promise<void>;
    reset(): void;
}