import type { GraphQLError, GraphQLFormattedError } from 'graphql';
import type { Path } from '@graphql-tools/utils';
import type { BoxedPromiseOrValue } from './BoxedPromiseOrValue.js';
import { DeferUsage } from './collectFields.js';
/**
 * The result of GraphQL execution.
 *
 *   - `errors` is included when any errors occurred as a non-empty array.
 *   - `data` is the result of a successful execution of the query.
 *   - `hasNext` is true if a future payload is expected.
 *   - `extensions` is reserved for adding non-standard properties.
 *   - `incremental` is a list of the results from defer/stream directives.
 */
export interface SingularExecutionResult<TData = any, TExtensions = any> {
    errors?: ReadonlyArray<GraphQLError>;
    data?: TData | null;
    extensions?: TExtensions;
}
export interface FormattedExecutionResult<TData = Record<string, unknown>, TExtensions = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLFormattedError>;
    data?: TData | null;
    extensions?: TExtensions;
}
export interface IncrementalExecutionResults<TData = unknown, TExtensions = Record<string, unknown>> {
    initialResult: InitialIncrementalExecutionResult<TData, TExtensions>;
    subsequentResults: AsyncGenerator<SubsequentIncrementalExecutionResult<TData, TExtensions>, void, void>;
}
export interface InitialIncrementalExecutionResult<TData = Record<string, unknown>, TExtensions = Record<string, unknown>> extends SingularExecutionResult<TData, TExtensions> {
    data: TData;
    pending?: ReadonlyArray<PendingResult>;
    hasNext: true;
    extensions?: TExtensions;
}
export interface FormattedInitialIncrementalExecutionResult<TData = Record<string, unknown>, TExtensions = Record<string, unknown>> extends FormattedExecutionResult<TData, TExtensions> {
    data: TData;
    pending?: ReadonlyArray<PendingResult>;
    hasNext: boolean;
    extensions?: TExtensions;
}
export interface SubsequentIncrementalExecutionResult<TData = unknown, TExtensions = Record<string, unknown>> {
    pending?: ReadonlyArray<PendingResult>;
    incremental?: ReadonlyArray<IncrementalResult<TData, TExtensions>>;
    completed?: ReadonlyArray<CompletedResult>;
    hasNext: boolean;
    extensions?: TExtensions;
}
export interface FormattedSubsequentIncrementalExecutionResult<TData = unknown, TExtensions = Record<string, unknown>> {
    hasNext: boolean;
    pending?: ReadonlyArray<PendingResult>;
    incremental?: ReadonlyArray<FormattedIncrementalResult<TData, TExtensions>>;
    completed?: ReadonlyArray<FormattedCompletedResult>;
    extensions?: TExtensions;
}
interface ExecutionGroupResult<TData = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLError>;
    data: TData;
}
export interface IncrementalDeferResult<TData = Record<string, unknown>, TExtensions = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLError>;
    data: TData | null;
    id?: string;
    path?: ReadonlyArray<string | number>;
    label?: string;
    subPath?: ReadonlyArray<string | number>;
    extensions?: TExtensions;
}
export interface FormattedIncrementalDeferResult<TData = Record<string, unknown>, TExtensions = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLFormattedError>;
    data: TData | null;
    id: string;
    path?: ReadonlyArray<string | number>;
    label?: string;
    subPath?: ReadonlyArray<string | number>;
    extensions?: TExtensions;
}
interface StreamItemsRecordResult<TData = ReadonlyArray<unknown>> {
    errors?: ReadonlyArray<GraphQLError>;
    items: TData;
}
export interface IncrementalStreamResult<TData = ReadonlyArray<unknown>, TExtensions = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLError>;
    items: TData | null;
    id?: string;
    path?: ReadonlyArray<string | number>;
    label?: string;
    extensions?: TExtensions;
}
export interface FormattedIncrementalStreamResult<TData = Array<unknown>, TExtensions = Record<string, unknown>> {
    errors?: ReadonlyArray<GraphQLFormattedError>;
    items: TData | null;
    id: string;
    path?: ReadonlyArray<string | number>;
    label?: string;
    extensions?: TExtensions;
}
export type IncrementalResult<TData = unknown, TExtensions = Record<string, unknown>> = IncrementalDeferResult<TData, TExtensions> | IncrementalStreamResult<TData, TExtensions>;
export type FormattedIncrementalResult<TData = unknown, TExtensions = Record<string, unknown>> = FormattedIncrementalDeferResult<TData, TExtensions> | FormattedIncrementalStreamResult<TData, TExtensions>;
export interface PendingResult {
    id: string;
    path: ReadonlyArray<string | number>;
    label?: string;
}
export interface CompletedResult {
    id: string;
    errors?: ReadonlyArray<GraphQLError>;
}
export interface FormattedCompletedResult {
    path: ReadonlyArray<string | number>;
    label?: string;
    errors?: ReadonlyArray<GraphQLError>;
}
export declare function isPendingExecutionGroup(incrementalDataRecord: IncrementalDataRecord): incrementalDataRecord is PendingExecutionGroup;
export type CompletedExecutionGroup = SuccessfulExecutionGroup | FailedExecutionGroup;
export declare function isCompletedExecutionGroup(incrementalDataRecordResult: IncrementalDataRecordResult): incrementalDataRecordResult is CompletedExecutionGroup;
export interface SuccessfulExecutionGroup {
    pendingExecutionGroup: PendingExecutionGroup;
    path: Array<string | number>;
    result: ExecutionGroupResult;
    incrementalDataRecords: ReadonlyArray<IncrementalDataRecord> | undefined;
    errors?: never;
}
interface FailedExecutionGroup {
    pendingExecutionGroup: PendingExecutionGroup;
    path: Array<string | number>;
    errors: ReadonlyArray<GraphQLError>;
    result?: never;
}
export declare function isFailedExecutionGroup(completedExecutionGroup: CompletedExecutionGroup): completedExecutionGroup is FailedExecutionGroup;
export interface PendingExecutionGroup {
    deferUsages: ReadonlySet<DeferUsage>;
    path: Path | undefined;
    result: BoxedPromiseOrValue<CompletedExecutionGroup> | (() => BoxedPromiseOrValue<CompletedExecutionGroup>);
}
export interface StreamItemResult {
    path: Path;
    item?: unknown;
    incrementalDataRecords?: ReadonlyArray<IncrementalDataRecord> | undefined;
    errors?: ReadonlyArray<GraphQLError> | undefined;
}
export type StreamItemRecord = BoxedPromiseOrValue<StreamItemResult> | (() => BoxedPromiseOrValue<StreamItemResult>);
export interface StreamRecord {
    path: Path;
    label: string | undefined;
    index: number;
    id?: string | undefined;
    streamItemQueue: Array<StreamItemRecord>;
}
export interface StreamItemsResult {
    streamRecord: StreamRecord;
    result?: StreamItemsRecordResult | undefined;
    incrementalDataRecords?: ReadonlyArray<IncrementalDataRecord> | undefined;
    errors?: ReadonlyArray<GraphQLError> | undefined;
}
export interface CancellableStreamRecord extends StreamRecord {
    earlyReturn: () => Promise<unknown>;
}
export declare function isCancellableStreamRecord(streamRecord: StreamRecord): streamRecord is CancellableStreamRecord;
export type IncrementalDataRecord = PendingExecutionGroup | StreamRecord;
export type IncrementalDataRecordResult = CompletedExecutionGroup | StreamItemsResult;
export {};