Polyfill EventTarget and Event in tests for old Node.js versions.

Author: jaydenseric

package.json

@@ -69,6 +69,7 @@
     "eslint-plugin-prettier": "^3.4.0",
     "eslint-plugin-react": "^7.23.2",
     "eslint-plugin-react-hooks": "^4.2.0",
+    "event-target-shim": "^6.0.2",
     "fetch-blob": "^2.1.1",
     "filter-console": "^0.1.1",
     "formdata-node": "^2.5.0",

test/index.js

@@ -1,6 +1,14 @@
 'use strict';
 
-require('abort-controller/polyfill');
+if (!('performance' in global))
+  global.performance = require('perf_hooks').performance;
+
+if (!('EventTarget' in global))
+  global.EventTarget =
+    require('events').EventTarget || require('event-target-shim').EventTarget;
+
+if (!('Event' in global))
+  global.Event = require('events').Event || require('event-target-shim').Event;
 
 if (!('CustomEvent' in global))
   global.CustomEvent = class CustomEvent extends Event {
@@ -10,8 +18,7 @@ if (!('CustomEvent' in global))
     }
   };
 
-if (!('performance' in global))
-  global.performance = require('perf_hooks').performance;
+require('abort-controller/polyfill');
 
 const { TestDirector } = require('test-director');