Add eventsource to repo for modification

Author: EmilianoSanchez

package-lock.json

@@ -50,9 +50,6 @@
     "tslib": "^2.3.1",
     "unfetch": "^4.2.0"
   },
-  "optionalDependencies": {
-    "eventsource": "^1.1.2"
-  },
   "devDependencies": {
     "@types/node-fetch": "^2.6.10",
     "@types/seedrandom": "^3.0.2",

package.json

@@ -2,7 +2,7 @@ import tape from 'tape-catch';
 import { getEventSource } from '../node';
 
 tape('getEventSource returns eventsource module in Node', assert => {
-  assert.equal(getEventSource(), require('eventsource'));
+  assert.equal(getEventSource(), require('../eventsource'));
 
   assert.end();
 });