PokemonStore for a shared pokemon cache

structures/PokemonStore.js

@@ -0,0 +1,21 @@
+const { Collection } = require('discord.js');
+const request = require('node-superfetch');
+const Pokemon = require('./Pokemon');
+
+module.exports = class PokemonStore extends Collection {
+	constructor(iterable) {
+		super(iterable);
+	}
+
+	async fetch(query) {
+		query = encodeURIComponent(query.toLowerCase().replace(/ /g, '-').replace(/[^a-zA-Z0-9-]/g, ''));
+		const num = Number.parseInt(query, 10);
+		if (this.has(num)) return this.get(num);
+		const found = this.find(pokemon => pokemon.slug === query);
+		if (found) return found;
+		const { body } = await request.get(`https://pokeapi.co/api/v2/pokemon-species/${query}/`);
+		const pokemon = new Pokemon(body);
+		this.set(pokemon.id, pokemon);
+		return pokemon;
+	}
+};