@apollo/composition
Version:
Apollo Federation composition utilities
21 lines • 948 B
TypeScript
import { Schema, Subgraphs } from "@apollo/federation-internals";
import { GraphQLError } from "graphql";
import { CompositionHint } from "../hints";
import { CompositionOptions } from "../compose";
export type Sources<T> = Map<number, T | undefined>;
export declare function sourcesFromArray<T>(array: (T | undefined)[]): Sources<T>;
export type MergeResult = MergeSuccess | MergeFailure;
export interface MergeSuccess {
supergraph: Schema;
hints: CompositionHint[];
errors?: undefined;
}
export interface MergeFailure {
errors: GraphQLError[];
supergraph?: undefined;
hints?: undefined;
}
export declare function isMergeSuccessful(mergeResult: MergeResult): mergeResult is MergeSuccess;
export declare function isMergeFailure(mergeResult: MergeResult): mergeResult is MergeFailure;
export declare function mergeSubgraphs(subgraphs: Subgraphs, options?: CompositionOptions): MergeResult;
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