Convert backend code to ES modules

Bundling code now with Rollup for its flat bundling and tree shaking
support. Front end code still goes through Webpack for browser support.

lib/ui/api-functions.js

@@ -1,14 +1,13 @@
 "use strict";
 
-const http = require("http");
-const https = require("https");
-const url = require("url");
+import http from "http";
+import https from "https";
+import url from "url";
+import * as config from "../config";
+import * as db from "./db";
+import * as mongodbFunctions from "./mongodb-functions";
 
-const config = require("../config");
-const db = require("./db");
-const mongodbFunctions = require("./mongodb-functions");
-
-function filterToMongoQuery(filter, negate = false, res = {}) {
+export function filterToMongoQuery(filter, negate = false, res = {}) {
   const op = filter[0];
 
   if ((!negate && op === "AND") || (negate && op === "OR")) {
@@ -66,7 +65,7 @@ function filterToMongoQuery(filter, negate = false, res = {}) {
   return res;
 }
 
-function deleteResource(resource, id) {
+export function deleteResource(resource, id) {
   return new Promise((resolve, reject) => {
     const resourceUrl =
       resource === "virtualParameters" ? "virtual_parameters" : resource;
@@ -142,7 +141,7 @@ function postTask(task, connectionRequest, callback) {
     .end(JSON.stringify(task));
 }
 
-function postTasks(deviceId, tasks) {
+export function postTasks(deviceId, tasks) {
   return new Promise((resolve, reject) => {
     let connectionRequestStatus;
     const promises = [];
@@ -206,7 +205,7 @@ function postTasks(deviceId, tasks) {
   });
 }
 
-function updateTags(deviceId, tags) {
+export function updateTags(deviceId, tags) {
   return Promise.all(
     Object.entries(tags).map(
       ([tag, onOff]) =>
@@ -235,7 +234,7 @@ function updateTags(deviceId, tags) {
   );
 }
 
-function ping(host) {
+export function ping(host) {
   return new Promise((resolve, reject) => {
     const options = url.parse(
       `http://127.0.0.1:${config.get("NBI_PORT")}/ping/${encodeURIComponent(
@@ -295,7 +294,7 @@ function ping(host) {
   });
 }
 
-function putResource(resource, id, data) {
+export function putResource(resource, id, data) {
   return new Promise((resolve, reject) => {
     const resourceUrl =
       resource === "virtualParameters" ? "virtual_parameters" : resource;
@@ -348,7 +347,7 @@ function putResource(resource, id, data) {
   });
 }
 
-function putFile(id, metadata, fileStream) {
+export function putFile(id, metadata, fileStream) {
   return new Promise((resolve, reject) => {
     const options = url.parse(
       `http://127.0.0.1:${config.get("NBI_PORT")}/files/${encodeURIComponent(
@@ -372,11 +371,3 @@ function putFile(id, metadata, fileStream) {
     fileStream.pipe(req);
   });
 }
-
-exports.postTasks = postTasks;
-exports.deleteResource = deleteResource;
-exports.putResource = putResource;
-exports.updateTags = updateTags;
-exports.filterToMongoQuery = filterToMongoQuery;
-exports.ping = ping;
-exports.putFile = putFile;