Migrated to typescript for buttoncontainer. Kept ts no check. Still JSX.element error on tutorial rendering.

kept ts nocheck for that error but needs to pass Travis CI. Working on error

Author: Samuel Tran

src/app/containers/ButtonsContainer.tsx

@@ -31,18 +31,18 @@ function exportHandler(snapshots: []) {
   URL.revokeObjectURL(fileDownload.href);
 }
 
-function importHandler(dispatch: (a: any) => void) {
+function importHandler(dispatch: (a: unknown) => void) {
   const fileUpload = document.createElement('input');
   fileUpload.setAttribute('type', 'file');
 
-  fileUpload.onchange = () => {
+  fileUpload.onchange = (e) => {
     const reader = new FileReader();
     reader.onload = () => {
       const test = reader.result.toString();
       return dispatch(importSnapshots(JSON.parse(test)));
     };
-    if (event.target.hasOwnProperty('files')) {
-      const eventFiles: any = event.target;
+    if (e.target.hasOwnProperty('files')) {
+      const eventFiles: unknown = e.target;
       reader.readAsText(eventFiles.files[0]);
     }
   };