@graphql-pagination/apollo-datasource/dist/ApolloDataSourcePager.js

GraphQL Pagination - Apollo Datasource integration

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ApolloDataSourcePager = void 0;
const apollo_datasource_1 = require("apollo-datasource");
const core_1 = require("@graphql-pagination/core");
const apollo_server_errors_1 = require("apollo-server-errors");
/**
 * CursorPager extending Apollo DataSource class to be used as Apollo's datasource.
 */
class ApolloDataSourcePager extends apollo_datasource_1.DataSource {
    constructor(config) {
        super();
        this.typeDefs = [];
        this.resolvers = {};
        this.pager = (0, core_1.dataSourcePager)(config);
        this.cursor = this.pager.cursor;
        this.typeDef = this.pager.typeDef();
        this.typeDefs = this.pager.typeDefs();
        this.resolvers = this.pager.resolvers(config.dataSource);
    }
    forwardResolver(args, dataSource) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.pager.forwardResolver(args, dataSource)
                .catch(e => {
                if (e.message === "Invalid cursor value") {
                    throw new apollo_server_errors_1.UserInputError(e.message, { "argumentName": "after" });
                }
                throw e;
            });
        });
    }
    backwardResolver(args, dataSource) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.pager.backwardResolver(args, dataSource)
                .catch(e => {
                if (e.message === "Invalid cursor value") {
                    throw new apollo_server_errors_1.UserInputError(e.message, { "argumentName": "before" });
                }
                throw e;
            });
        });
    }
}
exports.ApolloDataSourcePager = ApolloDataSourcePager;
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