diff --git a/src/loaders/ImageLoader.js b/src/loaders/ImageLoader.js
index f2ea0760..6aa4fbfc 100644
--- a/src/loaders/ImageLoader.js
+++ b/src/loaders/ImageLoader.js
@@ -88,7 +88,10 @@ const ImageLoader = {
 
         request = new window.XMLHttpRequest();
         request.open('GET', url, true);
-        if (process.env.npm_lifecycle_event !== 'test') {
+        if (
+		typeof process === 'object' &&
+		process.env.npm_lifecycle_event !== 'test'
+	) {
             /* istanbul ignore next */
             request.onreadystatechange = function () {
                 if (this.readyState === 4 && this.status >= 400) {
@@ -131,4 +134,4 @@ const ImageLoader = {
 
 };
 
-export { ImageLoader };
\ No newline at end of file
+export { ImageLoader };