flow

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λ flow
The flow server is not responding (0 retries remaining): /
Out of retries, exiting!

Try killing it;

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flow stop

This won’t work;

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import React, { ReactNode } from 'react';

This will;

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import React from 'react';
import type { Node } from 'react';

Not only does flow language support need to be installed, but @builtin TypeScript and JavaScript Language Features needs to be disabled. Thanks Idan Dagan.