How to use msw (mocking service worker) with React typescript? - service-worker

I have installed msw using package.json entry in my react typescript project. And appropriately invoking msw worker start but I constantly get the error
**getWorkerInstance.ts:85 Uncaught (in promise) Error: [MSW] Failed to register the Service Worker:
Failed to register a ServiceWorker for scope ('http://localhost:3000/') with script ('http://localhost:3000/mockServiceWorker.js'): The script has an unsupported MIME type ('text/html').
at getWorkerInstance (getWorkerInstance.ts:85:1) at async startWorkerInstance (createStartHandler.ts:31:1) at async SetupWorkerApi.start (setupWorker.ts:188:1)***
**
Can anyone provide an example source code of how msw works with react typescript ? I got a native react project but that worked? Is msw not supported with React typescript?
Can anyone provide an example source code of how msw works with react typescript ? I got a native react project but that worked? Is msw not supported with React typescript?

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React Native Error (ReferenceError: Can't find variable: React) when React is installed?

Overview:
I created a NPM dependency react-native-ultimate-modal-picker and it relies on a few other dependencies.
Expected Behavior:
React should be installed because it's installed in the fresh react project.
Error:
ReferenceError: Can't find variable: React
What I've tried
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Installed react and react-native as peerDependencies for my NPM Package react-native-ultimate-modal-picker
So what am I missing here?
Try importing react like import React from 'react' and not import * as React from 'react' at the beginning of every module.

Module RCTLog is not a registered callable module, Module AppRegistry is not a registered callable module, Module RCTDeviceEventEmitter is not

I followed this tutorial to create my react native library with Native Module. I need to use a mobile SDK developed from BROTHER to use their printers in one of my REACT-NATIVE app.
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and
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I started my react-native app with EXPO and after I ejected it.
react: 16.13.1
react-native: 0.63.4
npm: 7.9.0
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-- Aqueduct CLI Version: 3.3.0+1
-- Aqueduct project version: 3.3.0+1
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^
**** Stacktrace
****
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Unable to launch web project through dart editor

Just starting up on Dart and I am unable to launch web project from dart editor, command line projects work fine.
I get this exception while trying to start web project
Running pub get on C:\Users\Admin\dart\DartABWebApp ... ---
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Anyone knows how to resolve this ?
I moved the installation directly under primary drive and that did the trick

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