From 36009ed212b0379254480cb563fef7daa895de62 Mon Sep 17 00:00:00 2001
From: Gordon Williams <gw@pur3.co.uk>
Date: Thu, 14 May 2020 11:42:10 +0100
Subject: [PATCH] tweaks to allow `appinfo` to work under node.js

---
 js/appinfo.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/js/appinfo.js b/js/appinfo.js
index b4d0b5426..ad2611d19 100644
--- a/js/appinfo.js
+++ b/js/appinfo.js
@@ -1,10 +1,13 @@
+if (typeof btoa==="undefined") 
+  function btoa(d) { return Buffer.from(d).toString('base64'); }
+
 // Converts a string into most efficient way to send to Espruino (either json, base64, or compressed base64)
 function toJS(txt) {
   var json = JSON.stringify(txt);
   var b64 = "atob("+JSON.stringify(btoa(json))+")";
   var js = b64.length < json.length ? b64 : json;
 
-  if (heatshrink) {
+  if (typeof heatshrink !== "undefined") {
     var ua = new Uint8Array(txt.length);
     for (var i=0;i<txt.length;i++)  ua[i] = txt.charCodeAt(i);
     var c = heatshrink.compress(ua);