added travis and converted to single quotes

.travis.yml

@@ -0,0 +1,10 @@
+language: node_js
+
+node_js:
+  - 13
+
+install:
+  - npm ci
+
+script:
+  - npm test

rollup.config.js

@@ -1,22 +1,22 @@
-import {terser} from "rollup-plugin-terser";
-import resolve from "@rollup/plugin-node-resolve";
-import commonjs from "@rollup/plugin-commonjs";
+import {terser} from 'rollup-plugin-terser';
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
 
-const isProd = process.env.NODE_ENV === "production";
+const isProd = process.env.NODE_ENV === 'production';
 
-const typescriptOptions = {include: ["src/**/*", "../shared/**/*"]};
+const typescriptOptions = {include: ['src/**/*', '../shared/**/*']};
 if (!isProd) typescriptOptions.noEmitOnError = false;
 
 module.exports = {
-  input: "src/client.js",
+  input: 'src/client.js',
   plugins: [
     commonjs(),
     resolve(),
     isProd && terser()
   ],
   output: {
-    file: "dist/client/bundle.js",
-    name: "ucaptcha",
-    format: "iife"
+    file: 'dist/client/bundle.js',
+    name: 'ucaptcha',
+    format: 'iife'
   }
 };

src/.eslintrc.js

@@ -15,8 +15,5 @@ module.exports = {
     "sourceType": "module",
   },
   "plugins": [],
-  "rules": {
-    "quotes": ["error", "double"],
-    "comma-dangle": "off" 
-  },
+  "rules": {},
 };

src/R.js

@@ -1,8 +1,8 @@
-import path from "path";
-import { fileURLToPath } from 'url';
+import path from 'path';
+import {fileURLToPath} from 'url';
 const __dirname = fileURLToPath(import.meta.url);
 /**
  * A path string relative to the project folder.
  * @typedef {String} IMAGES_FOLDER
  */
-export const IMAGES_FOLDER = path.join(__dirname, "..", "public", "images");
+export const IMAGES_FOLDER = path.join(__dirname, '..', 'public', 'images');

src/client.js

@@ -1,4 +1,4 @@
-import UserSession from "./shared/models/UserSession.js";
+import UserSession from './shared/models/UserSession.js';
 
 /**
  * Create a uCaptcha box
@@ -6,8 +6,8 @@ import UserSession from "./shared/models/UserSession.js";
  * @return {HTMLElement} uCaptcha box
  */
 function uCaptchaBox(key) {
-  const checkbox = createElement("div", {
-    style: "cursor:pointer;border-radius:3px;border:2px solid #888;width:25px;height:25px;display:inline-block"
+  const checkbox = createElement('div', {
+    style: 'cursor:pointer;border-radius:3px;border:2px solid #888;width:25px;height:25px;display:inline-block',
   });
   checkbox.onclick = function() {
     fetch(`https://localhost:444/api/init?k=${key}`)
@@ -19,10 +19,10 @@ function uCaptchaBox(key) {
           session.deserialize(resp);
         });
 
-    checkbox.setAttribute("style",
-        checkbox.getAttribute("style") + "background-color:royalblue;");
+    checkbox.setAttribute('style',
+        checkbox.getAttribute('style') + 'background-color:royalblue;');
   };
-  const captchaBox = createElement("div");
+  const captchaBox = createElement('div');
   captchaBox.appendChild(checkbox);
   return captchaBox;
 }
@@ -47,7 +47,8 @@ export function create(websiteKey, selector) {
  */
 function createElement(tagName, attributes={}) {
   const elem = document.createElement(tagName);
-  for(const [name, value] of Object.entries(attributes)) {
+  for (const [name, value] of Object.entries(attributes)) {
     elem.setAttribute(name, value);
-  } 
+  }
+  return elem;
 }

src/helpers/fetchImagesJob.js

@@ -1,10 +1,10 @@
-import cron from "cron";
+import cron from 'cron';
 const CronJob = cron.CronJob;
-import request from "request";
-import path from "path";
-import {IMAGES_FOLDER} from "../R.js";
-import {randomBytes} from "./utils.js";
-import Jimp from "jimp";
+import request from 'request';
+import path from 'path';
+import {IMAGES_FOLDER} from '../R.js';
+import {randomBytes} from './utils.js';
+import Jimp from 'jimp';
 
 
 /**
@@ -77,7 +77,7 @@ async function saveImage(filepath, uri) {
 const geoImageRequestDefaults = {
   lat: 40.6971576,
   lng: -83.608754,
-  radius: 5000
+  radius: 5000,
 };
 
 /**
@@ -85,12 +85,12 @@ const geoImageRequestDefaults = {
  * @param {geoImageRequest} [geoImageRequest] - Optional set a geoImageReqest
  */
 export function fetchImages(geoImageRequest) {
-  console.log("Collecting images...");
+  console.log('Collecting images...');
   const formData = {
     ...geoImageRequestDefaults,
-    ...geoImageRequest
+    ...geoImageRequest,
   };
-  request("https://openstreetcam.org/1.0/list/nearby-photos/", {formData, method: "POST"}, async (apiError, _, body) => {
+  request('https://openstreetcam.org/1.0/list/nearby-photos/', {formData, method: 'POST'}, async (apiError, _, body) => {
     if (apiError) throw apiError;
     /** @type {OSCResponse} */
     const json = JSON.parse(body);
@@ -102,12 +102,12 @@ export function fetchImages(geoImageRequest) {
   });
 }
 
-export const fetchImagesJob = new CronJob("0 0 0 * * *", () => {
+export const fetchImagesJob = new CronJob('0 0 0 * * *', () => {
   fetchImages(geoImageRequestDefaults);
 }, null, true);
 
 
 export default {
   fetchImages,
-  fetchImagesJob
+  fetchImagesJob,
 };

src/helpers/sendJson.js

@@ -3,7 +3,7 @@
  * @param {object} json
  */
 export default (res, json) => {
-  res.setHeader("Content-Type", "application/json");
+  res.setHeader('Content-Type', 'application/json');
   res.send(`:)${JSON.stringify(json)}`);
   return;
 };

src/helpers/utils.js

@@ -1,7 +1,7 @@
-import crypto from "crypto";
+import crypto from 'crypto';
 
-const alphabets = "ABCDEFGHIJKLMNOPQRSTUVWXYZabc" +
-  "defghijklmnopqrstuvwxyz0123456789";
+const alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabc' +
+  'defghijklmnopqrstuvwxyz0123456789';
 
 /**
  * Produce a string of n length consisting of alphanumeric characters
@@ -16,7 +16,7 @@ function randomBytes(length) {
     chars.push(alphabets[bytes[i] % alphabets.length]);
   }
 
-  return chars.join("");
+  return chars.join('');
 }
 
 

src/routes/api/index.js

@@ -1,10 +1,10 @@
-import express from "express";
-import {initializer} from "./initializeSession.js";
-import sendJson from "../../helpers/sendJson.js";
+import express from 'express';
+import {initializer} from './initializeSession.js';
+import sendJson from '../../helpers/sendJson.js';
 
-const router = express.Router();
+const router = new express.Router();
 
-router.get("/init", async (req, res)=>{
+router.get('/init', async (req, res)=>{
   const result = await initializer();
   sendJson(res, result);
 });

src/routes/api/initializeSession.js

@@ -1,9 +1,9 @@
 /**
  * TODO: this code should maybe be the constructor of a session model
  */
-import pickRandomFile from "./pickRandomFile.js";
-import UserSession from "../../shared/models/UserSession.js";
-import {randomBytes} from "../../helpers/utils.js";
+import pickRandomFile from './pickRandomFile.js';
+import UserSession from '../../shared/models/UserSession.js';
+import {randomBytes} from '../../helpers/utils.js';
 
 /**
  * @return {any}

src/routes/api/pickRandomFile.js

@@ -1,8 +1,8 @@
-import fs from "fs";
-import path from "path";
-import Jimp from "jimp";
-import {promisify} from "util";
-import {IMAGES_FOLDER} from "../../R.js";
+import fs from 'fs';
+import path from 'path';
+import Jimp from 'jimp';
+import {promisify} from 'util';
+import {IMAGES_FOLDER} from '../../R.js';
 
 const readdirAsync = promisify(fs.readdir);
 
@@ -17,8 +17,8 @@ export default async () => {
   const randomFilePath = path.join(
       IMAGES_FOLDER,
       files[Math.floor(
-          Math.random() * files.length
-      )]
+          Math.random() * files.length,
+      )],
   );
   return randomFilePath;
 };

src/server.js

@@ -1,26 +1,26 @@
-import dotenv from "dotenv";
+import dotenv from 'dotenv';
 dotenv.config();
 
-import express from "express";
+import express from 'express';
 const app = express();
 
-app.disable("x-powered-by");
+app.disable('x-powered-by');
 
-import cookieParser from "cookie-parser";
+import cookieParser from 'cookie-parser';
 app.use(cookieParser(process.env.COOKIE_SECRET));
 
 app.use(express.json({
-  limit: "128kb"
+  limit: '128kb',
 }));
 
-import apis from "./routes/api/index.js";
-app.use("/api", apis);
+import apis from './routes/api/index.js';
+app.use('/api', apis);
 
-import {fetchImagesJob, fetchImages} from "./helpers/fetchImagesJob.js";
+import {fetchImagesJob, fetchImages} from './helpers/fetchImagesJob.js';
 
 app.listen(8080, ()=>{
   fetchImagesJob.start();
   // fetchImages({radius: 1000});
-  console.log("Server started");
-  console.log("=========================================================");
+  console.log('Server started');
+  console.log('=========================================================');
 });

src/shared/models/UserSession.js

@@ -13,7 +13,7 @@ export class Session {
    * @param {string} id
    */
   set sessionId(id) {
-    if (id.length !== 8) throw Error("ClientID is not 8 characters");
+    if (id.length !== 8) throw Error('ClientID is not 8 characters');
     this._sessionId = id;
   }
 
@@ -48,7 +48,7 @@ export class Session {
   serialize() {
     const {sessionId, imageUrl} = this;
     if (!sessionId || !imageUrl) {
-      throw Error("Unable to serialize because of missing field(s)");
+      throw Error('Unable to serialize because of missing field(s)');
     }
     return [sessionId, imageUrl];
   }