const storeDir = process.env.JSON_STORE || '/tmp/pdfer-store/'; console.log(`using json-store at ${storeDir}`); const store = require('json-fs-store')(storeDir); const { promisify } = require('util'); const list = promisify(store.list); const load = promisify(store.load); const add = promisify(store.add); module.exports = { list: () => list(), load: id => load(id), add: item => add(item), }