import { IResolvers, Executor } from '@graphql-tools/utils';
import { GraphQLSchema, GraphQLResolveInfo, DocumentNode, SelectionSetNode } from 'graphql';
import * as YamlConfig from './config';
import { Transform, MergedTypeConfig, SubschemaConfig } from '@graphql-tools/delegate';
import { TypedDocumentNode } from '@graphql-typed-document-node/core';
import { MeshStore } from '@graphql-mesh/store';
import type { Plugin } from '@envelop/core';
export declare const jsonSchema: any;
export { YamlConfig };
export declare type MeshSource = {
    schema: GraphQLSchema;
    executor?: Executor;
    contextVariables?: Record<string, string>;
    batch?: boolean;
};
declare type FetchFn = (input: RequestInfo, init?: RequestInit) => Promise<Response>;
export interface KeyValueCacheSetOptions {
    /**
     * Specified in **seconds**, the time-to-live (TTL) value limits the lifespan
     * of the data being stored in the cache.
     */
    ttl?: number | null;
}
export interface KeyValueCache<V = any> {
    get(key: string): Promise<V | undefined>;
    set(key: string, value: V, options?: KeyValueCacheSetOptions): Promise<void>;
    delete(key: string): Promise<boolean | void>;
    getKeysByPrefix(prefix: string): Promise<string[]>;
}
export declare type GetMeshSourceOptions<THandlerConfig> = {
    name: string;
    config: THandlerConfig;
    baseDir: string;
    cache: KeyValueCache;
    pubsub: MeshPubSub;
    store: MeshStore;
    logger: Logger;
    importFn: ImportFn;
    fetchFn: FetchFn;
};
export interface MeshHandler {
    getMeshSource: () => Promise<MeshSource>;
}
export interface MeshHandlerLibrary<TConfig = any> {
    new (options: GetMeshSourceOptions<TConfig>): MeshHandler;
}
export declare type AllHooks = {
    destroy: void;
    [key: string]: any;
};
export declare type HookName = keyof AllHooks & string;
export interface MeshPubSub {
    publish<THook extends HookName>(triggerName: THook, payload: AllHooks[THook]): void;
    subscribe<THook extends HookName>(triggerName: THook, onMessage: (data: AllHooks[THook]) => void, options?: any): number;
    unsubscribe(subId: number): void;
    asyncIterator<THook extends HookName>(triggers: THook): AsyncIterable<AllHooks[THook]>;
}
export interface MeshTransformOptions<Config = any> {
    apiName: string;
    config: Config;
    baseDir: string;
    cache: KeyValueCache;
    pubsub: MeshPubSub;
    importFn: ImportFn;
}
export interface MeshTransformLibrary<Config = any> {
    new (options: MeshTransformOptions<Config>): MeshTransform;
}
export interface MeshTransform<T = any> extends Transform<T> {
    noWrap?: boolean;
}
export declare type Maybe<T> = null | undefined | T;
export interface MeshMergerOptions {
    cache: KeyValueCache;
    pubsub: MeshPubSub;
    logger: Logger;
    store: MeshStore;
}
export interface MeshMergerLibrary {
    new (options: MeshMergerOptions): MeshMerger;
}
export interface MeshMergerContext {
    rawSources: RawSourceOutput[];
    typeDefs?: DocumentNode[];
    resolvers?: IResolvers | IResolvers[];
}
export interface MeshMerger {
    name: string;
    getUnifiedSchema(mergerContext: MeshMergerContext): SubschemaConfig | Promise<SubschemaConfig>;
}
export declare type MeshPluginOptions<TConfig> = TConfig & {
    logger: Logger;
    cache: KeyValueCache;
    pubsub: MeshPubSub;
};
export declare type MeshPluginFactory<TConfig> = (options: MeshPluginOptions<TConfig>) => Plugin;
export declare type RawSourceOutput = {
    name: string;
    schema: GraphQLSchema;
    executor?: Executor;
    transforms: MeshTransform[];
    contextVariables: Record<string, string>;
    handler: MeshHandler;
    batch: boolean;
    merge?: Record<string, MergedTypeConfig>;
};
export declare type GraphQLOperation<TData, TVariables> = TypedDocumentNode<TData, TVariables> | string;
export declare type ImportFn = <T = any>(moduleId: string, noCache?: boolean) => Promise<T>;
export declare type LazyLoggerMessage = (() => any | any[]) | any;
export declare type Logger = {
    name?: string;
    log: (...args: any[]) => void;
    warn: (...args: any[]) => void;
    info: (...args: any[]) => void;
    error: (...args: any[]) => void;
    debug: (...lazyArgs: LazyLoggerMessage[]) => void;
    child: (name: string) => Logger;
};
export declare type SelectionSetParam = SelectionSetNode | DocumentNode | string | SelectionSetNode;
export declare type SelectionSetParamOrFactory = ((subtree: SelectionSetNode) => SelectionSetParam) | SelectionSetParam;
export declare type InContextSdkMethodBatchingParams<TDefaultReturn, TArgs, TKey, TReturn> = {
    key: TKey;
    argsFromKeys: (keys: TKey[]) => TArgs;
    valuesFromResults?: (results: TDefaultReturn, keys: TKey[]) => TReturn | TReturn[];
};
export declare type InContextSdkMethodRegularParams<TDefaultReturn, TArgs, TReturn> = {
    args?: TArgs;
    valuesFromResults?: (results: TDefaultReturn) => TReturn | TReturn[];
};
export declare type InContextSdkMethodCustomSelectionSetParams = {
    selectionSet: SelectionSetParamOrFactory;
    info?: GraphQLResolveInfo;
};
export declare type InContextSdkMethodInfoParams = {
    info: GraphQLResolveInfo;
};
export declare type InContextSdkMethodParams<TDefaultReturn, TArgs, TContext, TKey, TReturn> = {
    root?: any;
    context: TContext;
} & (InContextSdkMethodCustomSelectionSetParams | InContextSdkMethodInfoParams) & (InContextSdkMethodBatchingParams<TDefaultReturn, TArgs, TKey, TReturn> | InContextSdkMethodRegularParams<TDefaultReturn, TArgs, TReturn>);
export declare type InContextSdkMethod<TDefaultReturn = any, TArgs = any, TContext = any> = <TKey, TReturn = TDefaultReturn>(params: InContextSdkMethodParams<TDefaultReturn, TArgs, TContext, TKey, TReturn>) => Promise<TReturn>;