apollo-flash/build/ImportsAutoloader.js

A smart and efficient toolkit to quickly bootstrap an apollo-server project.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
// @ts-ignore
const apollo_server_express_1 = require("apollo-server-express");
const includeAll = require("include-all");
const _ = require("lodash");
const path = require("path");
/**
 * This class is responsible of auto-import and assemble resolvers and schema.
 *
 * @export
 * @class ImportsAutoLoader
 */
class ImportsAutoloader {
    /**
     * Creates an instance of ImportsAutoLoader.
     *
     * @param {string} [typeDefsFolderPath=path.join(__dirname, "schemas")] - Folder in which schemas lives.
     * @param {string} [resolversFolderPath=path.join(__dirname, "resolvers")] - Folder in which resolvers lives.
     * @memberof ImportsAutoLoader
     */
    constructor(typeDefsFolderPath = path.join(__dirname, "schemas"), resolversFolderPath = path.join(__dirname, "resolvers")) {
        this.typeDefsFolderPath = typeDefsFolderPath;
        this.resolversFolderPath = resolversFolderPath;
    }
    /**
     * Generate GraphQL typedef from schemas folder.
     *
     * @returns {*}
     * @memberof ImportAutoLoader
     */
    generateTypeDefs() {
        // Parse folder for schema
        const flatSchemas = includeAll({
            dirname: this.typeDefsFolderPath,
            filter: /(.+)\.js$/,
            flatten: true,
            keepDirectoryPath: true,
        });
        // Extract imports
        const schemas = _.flatMap(flatSchemas, _.property("default"));
        // Transform into graphQL
        return _.map(schemas, this.toGQL);
    }
    /**
     * Generate an object mapping resolvers.
     *
     * This use file name as Resolver name
     *
     * @returns {IResolvers}
     * @memberof ImportAutoLoader
     */
    generateRootResolver() {
        // Parse folder for resolvers
        const flatResolvers = includeAll({
            depth: 1,
            dirname: this.resolversFolderPath,
            filter: /(.+)\.js$/,
        });
        // Extract imports
        return _.mapValues(flatResolvers, "default");
    }
    /**
     * Transform to graphql.
     *
     * @private
     * @param {string} el
     * @returns
     * @memberof ImportAutoLoader
     */
    toGQL(el) {
        return apollo_server_express_1.gql(el);
    }
}
exports.default = ImportsAutoloader;