fix: remove global access in decrypt and config in vite

frontend/src/features/admin-form/responses/ResponsesPage/storage/worker/decryption.worker.ts

@@ -13,15 +13,6 @@ import {
 } from '../types'
 import { CsvRecord } from '../utils/CsvRecord.class'
 
-// Fixes issue raised at https://stackoverflow.com/questions/66472945/referenceerror-refreshreg-is-not-defined
-// Something to do with babel-loader.
-if (import.meta.env.NODE_ENV !== 'production') {
-  // eslint-disable-next-line
-  ;(global as any).$RefreshReg$ = () => {}
-  // eslint-disable-next-line
-  ;(global as any).$RefreshSig$ = () => () => {}
-}
-
 const queue = new PQueue({ concurrency: 1 })
 
 /**
@@ -212,7 +203,7 @@ async function decryptIntoCsv(
     } catch (error) {
       csvRecord.setStatus(CsvRecordStatus.Error, 'Decryption Error')
     }
-  } catch (err) {
+  } catch (error) {
     csvRecord = new CsvRecord(
       CsvRecordStatus.Error,
       formatInTimeZone(new Date(), 'Asia/Singapore', 'dd MMM yyyy hh:mm:ss z'),

frontend/vite.config.ts

@@ -61,10 +61,5 @@ export default defineConfig(() => {
       plugins: () => [tsconfigPaths()],
       format: 'es' as const,
     },
-    define: {
-      // On local dev, global is undefined, causing decryption workers to fail.
-      // This is a workaround based on https://github.com/vitejs/vite/discussions/5912.
-      global: 'globalThis',
-    },
   }
 })