Estoy tratando de obtener datos de una API, pero no puedo obtener resultados externos de .then.

 function getChampionMasteryData(championId, summonerName) { var championMasteryData; var summonerId = process.env.SUMMONER_ID; axios.get(`https://euw1.api.riotgames.com/lol/champion-mastery/v4/champion-masteries/by-summoner/${summonerId}/by-champion/${championId}?api_key=${process.env.API_KEY}`, {responseType: 'json'}) .then(result => {championMasteryData = result.data}) .catch(e => console.log(e)); console.log(championMasteryData); return championMasteryData; }

producción:

 undefined