magnet-core/index.js

Magnet's core, a simple module loader.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
function __export(m) {
    for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
}
Object.defineProperty(exports, "__esModule", { value: true });
const bunyan = require("bunyan");
const magnet_1 = require("./magnet");
const process_1 = require("./process");
const utils_1 = require("./utils");
const copy_config_1 = require("./copy-config");
const magnet_2 = require("./config/magnet");
__export(require("./loader"));
function MagnetFn(modules) {
    return __awaiter(this, void 0, void 0, function* () {
        if (!Array.isArray(modules)) {
            throw new TypeError('Modules should pass in as array');
        }
        else if (!modules.length) {
            throw new Error('No modules provided');
        }
        let app = {
            log: bunyan.createLogger({ name: 'magnet-core' })
        };
        app.magnet = new magnet_1.default(app);
        process.once('uncaughtException', utils_1.errorHandler.bind(null, app));
        process.once('SIGUSR2', utils_1.errorHandler.bind(null, app));
        process.once('SIGINT', utils_1.errorHandler.bind(null, app));
        try {
            const tasks = yield process_1.performTasks(app, modules);
            app.magnet.teardowns = tasks.teardowns;
            // Check failed setup
            if (tasks.fails.length) {
                for (const fail of tasks.fails) {
                    app.log.error(fail);
                }
                throw new Error('Some modules cannot setup');
            }
            let autoCopyConfig = magnet_2.default.autoCopyConfig;
            autoCopyConfig = (app.config && app.config.magnet && app.config.magnet.autoCopyConfig)
                ? app.config.magnet.autoCopyConfig
                : autoCopyConfig;
            if (autoCopyConfig) {
                yield copy_config_1.default();
            }
            app.log.info('Ready');
            return app;
        }
        catch (err) {
            app.log.error(err.stack);
            throw err;
        }
    });
}
exports.default = MagnetFn;
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