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I'm trying fetch data from an API and display the data into list of cards in React with typeScript. Since I am new with React in Typescript, not sure how I can solve this error or am I missing something.

This is the error I get: Type '{ children: string[]; key: number; }' is not assignable to type 'IntrinsicAttributes & Props'. Property 'children' does not exist on type 'IntrinsicAttributes & Props'.

This is the code:

    interface Props {
  pokemonItem: PokemonItem;
}

export const PokemonCardList = (props: Props) => {
  const { pokemonItem } = props;
  const {
    id = '',
    name = '',
    weight = '',
    height = '',
    abilities = '',
  } = pokemonItem;

  const [pokemon, setPokemon] = React.useState<PokemonItem[]>([]);
  const [loadItems, setLoadItems] = React.useState(API_URL);

  const getPokemons = async () => {
    setLoading(true);
    const response: any = await fetch(loadItems);
    const data = await response.json();

    setLoadItems(data.next);
    setPokemon(data.results[0].name);
    setLoading(false);
    
    const getEachPokemon = (result: any) => {
      result.forEach(async (element: any) => {
        const response = await fetch(
          `https:pokeapi.co/api/v2/pokemon/${element.id}`
        );
        const data = await response.json();
        // // setPokemon((currentArrayList) => [...currentArrayList, data]);
        pokemon.push(data);
      });
    };

    getEachPokemon(data.results);
    await console.log(pokemon);
  };

  React.useEffect(() => {
    return getPokemons();
  }, []);

  return (
    <div>
      {pokemon &&
        pokemon.map((item, index) => (
          <PokemonCard key={index}>
            {item.name} {item.height} {item.weight} {item.abilities}
          </PokemonCard>
        ))}
    </div>
  );
};

Thie pokemonCard component:

interface Props {
  pokemonItem: PokemonItem;
}

const PokemonCard = (props: Props) => {
  const { pokemonItem } = props;
  const {
    id = '',
    name = '',
    weight = '',
    height = '',
    abilities = '',
  } = pokemonItem;

  const [imageLoaded, setImageLoaded] = React.useState(false);
  const urlImage = `https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/${id}.png?raw=true`;

  return (
    <div imageLoaded={imageLoaded}>
      <div
        src={urlImage}
        onLoad={() => setImageLoaded(true)}
      />
      <div>
        Name: {name}
        Height: {height}
        Weight: {weight}
        Abilities: {abilities}
      </div>
    </div>
  );
};

Answers

According to your definition of the PokemonCard component, you should be passing the pokemonItem as follow:

<PokemonCard pokemonItem={item} key={item.id} />

I have replaced the key prop as it is not recommended to use indexes as keys (see documentation), you could use the item's id instead. And you need to update the prop interface for the PokemonCard component so that the additional key prop doesn't break the validation:

interface Props {
  pokemonItem: PokemonItem;
  key: string;
}