Made progress bar for github mod downloads

lib/manager/modManager.js

@@ -10,6 +10,7 @@ const syncRequest = require("sync-request");
 const fs = require("fs");
 const https = require('follow-redirects').https;
 const factorioAPI = require("node-factorio-api");
+const sLog = require("single-line-log").stdout;
 
 const fileOps = require("./../fileOps.js");
 const config = require("./../../config");
@@ -19,6 +20,8 @@ const instances = require("./../getInstances.js").sync();
 function ellipse(str, max){
    return str.length > (max - 3) ? str.substring(0,max-3) + '...' : str;
 }
+// https://stackoverflow.com/questions/15900485/correct-way-to-convert-size-in-bytes-to-kb-mb-gb-in-javascript
+function formatBytes(a,b){if(0==a)return"0 Bytes";var c=1024,d=b||2,e=["Bytes","KB","MB","GB","TB","PB","EB","ZB","YB"],f=Math.floor(Math.log(a)/Math.log(c));return parseFloat((a/Math.pow(c,f)).toFixed(d))+" "+e[f]};
 
 /**
 Lists mods for an instance as a table. Warning, handles printing internally.
@@ -68,6 +71,7 @@ module.exports.listMods = function(instance){
 			token: config.token,
 			require_ownership: false
 		}).then(() => {
+			console.log("\r\n")
 			console.log("* Mods shared by all instances:")
 			factorioAPI.getInstalledMods().then(mods => {
 				console.log(asTable(mods));
@@ -142,9 +146,16 @@ module.exports.addMod = function(term, instance){
 			if(url) {
 				console.log("Downloading " + url);
 				let file = fs.createWriteStream(modDirectory + name);
+				let bytesDownloaded = 0;
 				https.get(url, function(response) {
 					response.pipe(file);
-					console.log("Downloaded "+name);
+					response.on("data", chunk => {
+						bytesDownloaded += chunk.length;
+						sLog("Downloading "+name+": "+formatBytes(bytesDownloaded));
+					}).on("end", x => {
+						sLog.clear();
+						console.log(""); // because sLog.clear() doesn't seem to do the job of ending the line properly
+					});
 				});
 			}
 		} else {

package.json

@@ -47,6 +47,7 @@
     "right-pad": "^1.0.1",
     "rmdir-sync": "^1.0.1",
     "simple-rcon": "^0.3.1",
+    "single-line-log": "^1.1.2",
     "socket.io": "^2.0.4",
     "socket.io-client": "^2.0.4",
     "sync-request": "^4.0.1",