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At the first step I added "typescript": "~3.7.5" and then I added "prettier": "1.19.1" and it should've been enough, but I still getting this error:

'optionalChaining' isn't currently enabled

so I tried to add "react-scripts": "3.3.0" and

"@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3"

"@babel/plugin-proposal-optional-chaining": "^7.8.3" but problem still remained, I did it in my normal CRA app but I don't know how I can change the babel preset list in the nx.dev configuration.

Sahandevs
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