Use single module imports and exports

public/js/appCesium.js

 "use strict";
 
-// Functions
 import {
+  BASE_URL,
+  QUERY_PARAMS_COMBINED,
   getDatastreamIdFromBuildingNumber,
   getDatastreamUrl,
   getObservationsUrl,
@@ -16,9 +17,6 @@ import {
   getMetadataPlusObservationsForChart,
 } from "./appChart.js";
 
-// Constants
-import { BASE_URL, QUERY_PARAMS_COMBINED } from "./appChart.js";
-
 Cesium.Ion.defaultAccessToken =
   "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIyODgxYzJlNi1kNDZiLTQ3ZmQtYmUxYy0yMWI0OGM3NDA5MzAiLCJpZCI6NDczOSwic2NvcGVzIjpbImFzciIsImdjIl0sImlhdCI6MTU0MTUyMzU0MX0.shj2hM3pvsvcmE_wMb2aBDuk_cKWmFmbolltInGImwU";
 

public/js/appChart.js

 "use strict";
 
-// DEBUG:
-// Observations WITHOUT data gap - Bau 225 / Datastream ID = 80
-// Observations WITH data gap - Bau 112 / Datastream ID = 78
-
-export const BASE_URL = "http://193.196.39.91:8080/frost-icity-tp31/v1.1";
+const BASE_URL = "http://193.196.39.91:8080/frost-icity-tp31/v1.1";
 
 /**
  * Retrieve the datastream ID that corresponds to a particular building
@@ -13,7 +9,7 @@ export const BASE_URL = "http://193.196.39.91:8080/frost-icity-tp31/v1.1";
  * @param {String} samplingRate String representing the sampling rate of the observations
  * @returns {Number} Datastream corresponding to the input building
  */
-export const getDatastreamIdFromBuildingNumber = function (
+const getDatastreamIdFromBuildingNumber = function (
   buildingNumber,
   phenomenon,
   samplingRate
@@ -104,7 +100,7 @@ export const getDatastreamIdFromBuildingNumber = function (
  * @param {Number} datastreamID Integer representing the Datastream ID
  * @returns {String} URL string for fetching a single Datastream
  */
-export const getDatastreamUrl = function (baseUrl, datastreamID) {
+const getDatastreamUrl = function (baseUrl, datastreamID) {
   if (!datastreamID) return;
   const fullDatastreamURL = `${baseUrl}/Datastreams(${datastreamID})`;
   return fullDatastreamURL;
@@ -116,7 +112,7 @@ export const getDatastreamUrl = function (baseUrl, datastreamID) {
  * @param {Number} datastreamID Integer representing the Datastream ID
  * @returns {String} URL string for fetching Observations
  */
-export const getObservationsUrl = function (baseUrl, datastreamID) {
+const getObservationsUrl = function (baseUrl, datastreamID) {
   if (!datastreamID) return;
   const fullObservationsURL = `${baseUrl}/Datastreams(${datastreamID})/Observations`;
   return fullObservationsURL;
@@ -142,7 +138,7 @@ const QUERY_PARAM_FILTER = createTemporalFilterString(
   "2021-01-01"
 );
 const QUERY_PARAM_SELECT = "result,phenomenonTime";
-export const QUERY_PARAMS_COMBINED = {
+const QUERY_PARAMS_COMBINED = {
   "$resultFormat": QUERY_PARAM_RESULT_FORMAT,
   "$orderBy": QUERY_PARAM_ORDER_BY,
   "$filter": QUERY_PARAM_FILTER,
@@ -155,7 +151,7 @@ export const QUERY_PARAMS_COMBINED = {
  * @param {Object} urlParamObj The URL parameters to be sent together with the GET request
  * @returns {Promise} A promise that contains the first page of results when fulfilled
  */
-export const axiosGetRequest = function (urlObservations, urlParamObj) {
+const axiosGetRequest = function (urlObservations, urlParamObj) {
   return axios.get(urlObservations, {
     params: urlParamObj,
   });
@@ -167,7 +163,7 @@ export const axiosGetRequest = function (urlObservations, urlParamObj) {
  * @param {String} urlDatastream A URL that fetches a Datastream from an STA instance
  * @returns {Promise} A promise that contains a metadata object for a Datastream when fulfilled
  */
-export const getDatastreamMetadata = async function (urlDatastream) {
+const getDatastreamMetadata = async function (urlDatastream) {
   try {
     // Extract properties of interest
     const {
@@ -185,7 +181,7 @@ export const getDatastreamMetadata = async function (urlDatastream) {
  * @param {Object} datastreamMetadata An object containing a Datastream's metadata
  * @returns {Object} An object containing the formatted metadata that is suitable for use in a line chart or heatmap
  */
-export const formatDatastreamMetadataForChart = function (datastreamMetadata) {
+const formatDatastreamMetadataForChart = function (datastreamMetadata) {
   const {
     description: datastreamDescription,
     name: datastreamName,
@@ -221,7 +217,7 @@ export const formatDatastreamMetadataForChart = function (datastreamMetadata) {
  * @param {Array} obsArray Response from SensorThings API as array
  * @returns {Array} Array of formatted observations suitable for use in a heatmap
  */
-export const formatSTAResponseForHeatMap = function (obsArray) {
+const formatSTAResponseForHeatMap = function (obsArray) {
   if (!obsArray) return;
 
   const dataSTAFormatted = obsArray.map((obs) => {
@@ -250,7 +246,7 @@ export const formatSTAResponseForHeatMap = function (obsArray) {
  * @param {Object} formattedDatastreamMetadata Object containing Datastream metadata
  * @returns {undefined} undefined
  */
-export const drawHeatMapHC = function (
+const drawHeatMapHC = function (
   formattedObsArrayForHeatmap,
   formattedDatastreamMetadata
 ) {
@@ -377,7 +373,7 @@ export const drawHeatMapHC = function (
  * @param {Array} obsArray Response from SensorThings API as array
  * @returns {Array} Array of formatted observations suitable for use in a line chart
  */
-export const formatSTAResponseForLineChart = function (obsArray) {
+const formatSTAResponseForLineChart = function (obsArray) {
   if (!obsArray) return;
 
   const dataSTAFormatted = obsArray.map((result) => {
@@ -395,7 +391,7 @@ export const formatSTAResponseForLineChart = function (obsArray) {
  * @param {Object} formattedDatastreamMetadata Object containing Datastream metadata
  * @returns {undefined} undefined
  */
-export const drawLineChartHC = function (
+const drawLineChartHC = function (
   formattedObsArrayForLineChart,
   formattedDatastreamMetadata
 ) {
@@ -473,7 +469,7 @@ const followNextLink = function (responsePromise) {
  * @param {Promise} httpGetRequestPromise Promise object resulting from an Axios GET request
  * @returns {Promise} A promise that contains an array of Observations from a single Datastream when fulfilled
  */
-export const getCombinedObservationsFromAllNextLinks = function (
+const getCombinedObservationsFromAllNextLinks = function (
   httpGetRequestPromise
 ) {
   return followNextLink(httpGetRequestPromise)
@@ -502,7 +498,7 @@ export const getCombinedObservationsFromAllNextLinks = function (
  * @param {Promise} metadataPlusObsPromiseArray An array that contains two promises, one for datastream metadata, the other for observations
  * @returns {Promise} A promise that contains two arrays when fulfilled, one for datastream metadata and the other for observations
  */
-export const getMetadataPlusObservationsForChart = async function (
+const getMetadataPlusObservationsForChart = async function (
   metadataPlusObsPromiseArray
 ) {
   // Array to store our final result
@@ -576,3 +572,21 @@ const observationsPromisesRLArr = datastreamsUrlRLArr.map((obsUrl) =>
 // getObservationsFromMultipleDatastreams(observationsPromisesRLArr).then((x) =>
 //   console.log(x)
 // );
+
+export {
+  BASE_URL,
+  QUERY_PARAMS_COMBINED,
+  getDatastreamIdFromBuildingNumber,
+  getDatastreamUrl,
+  getObservationsUrl,
+  createTemporalFilterString,
+  axiosGetRequest,
+  getDatastreamMetadata,
+  formatDatastreamMetadataForChart,
+  formatSTAResponseForHeatMap,
+  drawHeatMapHC,
+  formatSTAResponseForLineChart,
+  drawLineChartHC,
+  getCombinedObservationsFromAllNextLinks,
+  getMetadataPlusObservationsForChart,
+};