useContext hook update from child component - reactjs

Question

I'm fairly new to hooks as well as useContext, I'm attempting to update onClick from a child component and keep running into the error 'setPokemonId' is not a function, or.. it just doesn't do anything at all.
PokedexContext.js
import React, { useState, useEffect } from "react";
import axios from "axios";
const PokedexContext = React.createContext([{}, () => {}]);
const PokedexProvider = (props) => {
const [state, setState] = useState({});
const [loading, setLoading] = useState(true);
let [error, setError] = useState(false);
let [pokemonId, setPokemonId] = useState(10); //807 max
useEffect(() => {
setLoading(true);
setError(false);
axios
.get(`https://pokeapi.co/api/v2/pokemon/${pokemonId}`)
.then((res) => {
setState(res.data, loading);
setLoading(false);
})
.catch((err) => {
setLoading(false);
if (err.response) {
// pokemon not found
setError("Response");
} else if (err.request) {
// api error
setError("Request");
} else {
// everything else
setError(true);
}
});
}, [pokemonId]);
return (
<PokedexContext.Provider
value={[
state,
setState,
error,
loading,
setLoading,
pokemonId,
setPokemonId,
]}
>
{props.children}
</PokedexContext.Provider>
);
};
export { PokedexContext, PokedexProvider };
App.js
import React from "react";
import { PokedexProvider } from "../../context/PokedexContext";
import Pokedex from "../Pokedex";
const Landing = () => {
return (
<PokedexProvider>
<main className="container">
<Pokedex />
</main>
</PokedexProvider>
);
};
export default Landing;
Pokedex.js
import React, { useState, useContext } from "react";
import pokedex from "../assets/pokedex.png";
import PokedexScreen from "./PokedexScreen";
import errorHandling from "../utils/errorHandling";
import { PokedexContext } from "../context/PokedexContext";
import spinner from "../assets/pika-load.gif";
const Pokedex = () => {
const [state, setState, error, loading, setPokemonId, pokemonId] = useContext(
PokedexContext
);
const [power, setPower] = useState(false);
const [shinyDisplay, setShinyDisplay] = useState(false);
console.log(pokemonId);
return (
<div
alt="Pokedex"
data-testid="Pokedex"
className="pokedex"
style={{ backgroundImage: `url(${pokedex})` }}
>
<button className="pokedex--onButton" onClick={() => setPower(!power)}>
{power ? "Off" : "On"}
</button>
{error ? (
<div className="pokedex--screen__error">{errorHandling(error)}</div>
) : power ? (
<>
{loading ? (
<img
className="pokedex--screen__load"
src={spinner}
alt="Loading..."
/>
) : (
""
)}
<button
className="pokedex--shinyButton"
onClick={() => setShinyDisplay(!shinyDisplay)}
>
S
</button>
<span>
<button
className="pokedex--negativeButton"
onClick={() => setPokemonId(pokemonId - 1)}
>
-
</button>
<button
className="pokedex--positiveButton"
// onClick={}
>
+
</button>
</span>
</>
) : (
<div className="pokedex--screen__off" />
)}
</div>
);
};
export default Pokedex;
My goal here is to update the pokemonId when clicking the positive or negative buttons, and is what is currently causing the crashes.

Answer 1

Issue
When you're exporting your values in Context Provider. It's in the 6th index of the array
<PokedexContext.Provider
value={[
state,
setState,
error,
loading,
setLoading,
pokemonId,
setPokemonId, (6)
]}
>
{props.children}
</PokedexContext.Provider>
But you're using from the 4th index in Pokedex.
const [state, setState, error, loading, setPokemonId, pokemonId] = useContext(
PokedexContext
);
Solution
const [
state,
setState,
error,
loading,
setLoading,
pokemonId,
setPokemonId, (6)
] = useContext(
PokedexContext
);