'useState' is not defined no-undef React

You have forgotten to import useState

import React, { useEffect, useState } from "react";

You need to import "useState":

import React, { useEffect, useState } from "react";

I see that you have missed useState import.

Either you need to add like

import React, { useEffect, useState } from "react";

or make it React.useState i.e.

const [state, setState] = React.useState({
    joke: "",
  });

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