add ReadableStream to polyfills

Author: Shreyas-Microsoft

WebApp.Dockerfile

@@ -7,7 +7,7 @@ USER node
 RUN npm ci  
 COPY --chown=node:node ./frontend/ ./frontend  
 WORKDIR /home/node/app/frontend
-RUN npm install --save-dev @types/node @types/jest jest-environment-jsdom
+RUN npm install --save-dev @types/node @types/jest
 RUN NODE_OPTIONS=--max_old_space_size=8192 npm run build
 
 FROM python:3.11-alpine 

frontend/jest.polyfills.js

@@ -25,4 +25,12 @@ Object.defineProperties(globalThis, {
   FormData: { value: FormData },
   Request: { value: Request },
   Response: { value: Response },
+})
+
+const { ReadableStream, WritableStream, TransformStream } = require('web-streams-polyfill');
+
+Object.defineProperties(globalThis, {
+  ReadableStream: { value: ReadableStream },
+  WritableStream: { value: WritableStream },
+  TransformStream: { value: TransformStream },
 })