Move event listener to typescript file

index.html

@@ -31,7 +31,7 @@
       </section>
     </main>
     <script src="dist/bundle.js"></script>
-    <script>
+    <!-- <script>
       document
         .getElementById('csvInput')
         .addEventListener('change', function (event) {
@@ -45,6 +45,6 @@
             reader.readAsText(file);
           }
         });
-    </script>
+    </script> -->
   </body>
 </html>

src/csvToJSON.ts

@@ -0,0 +1,12 @@
+import { isJunk } from './utils';
+
+const csvBOM = '/tests/bom.csv';
+const csv = require('csvtojson');
+
+export function csvToJSON(csvBOM: string): void {
+  csv()
+    .fromString(csvBOM)
+    .then((jsonObj: object) => {
+      console.log(jsonObj);
+    });
+}

src/index.ts

@@ -1,7 +1,27 @@
 // Modules
-// import csv from 'csvtojson';
-// import { Converter } from 'csvtojson/v2/Converter';
-import { isJunk, getPartType } from './utils';
+import { csvToJSON } from './csvToJSON';
+
+const input = document.getElementById('csvInput') as HTMLInputElement;
+const csvText = document.getElementById('csvText') as HTMLPreElement;
+
+//Functions
+function handleUpload(event: Event) {
+  const file = (event.target as HTMLInputElement).files![0];
+  if (file) {
+    const reader = new FileReader();
+    reader.onload = function (e) {
+      const content = (e.target as FileReader).result;
+      if (content === null) throw new Error('CSV Cannot be null.');
+      csvText.innerText = content.toString();
+    };
+    reader.readAsText(file);
+  }
+}
+
+//Add event listener
+input.addEventListener('change', handleUpload);
+
+// csvToJSON();
 
 /* TODO
 // Format the HTML nicely and output to a pre code block