Theo's Typesafe Cult•8mo ago

Weird behavior in TS api endpoint

Currently working on an api endpoint that fetches data from an external api and performs some updates then stores locally.

Solution:

```ts POST = async(request) => { fetch initial data... const players: Map<string, Player> = new Map(); const teams: Map<string, Team> = new Map();...

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2 Replies

Arctic•8mo ago

Current function structure is as follows:

POST = async(request) => {
  fetch initial data...
  const players: Map<string, Player> = new Map();
  const teams: Map<string, Team> = new Map();
  await(async() => {
    initialData.forEach((match) => {
      validatematch()
      if(matchisvalid){
        match.stats.forEach((stat) => {
        stat.stats.teams.forEach((team) => {
            teams.set(team.TeamId, team);
            team.players.forEach((player) => {
                players.set(player.puuid, player);
            });
        });
    });
      }
    })
  })
  return Response.json({ teams: [...teams.values()], players: [...players.values()] });
})

POST = async(request) => {
  fetch initial data...
  const players: Map<string, Player> = new Map();
  const teams: Map<string, Team> = new Map();
  await(async() => {
    initialData.forEach((match) => {
      validatematch()
      if(matchisvalid){
        match.stats.forEach((stat) => {
        stat.stats.teams.forEach((team) => {
            teams.set(team.TeamId, team);
            team.players.forEach((player) => {
                players.set(player.puuid, player);
            });
        });
    });
      }
    })
  })
  return Response.json({ teams: [...teams.values()], players: [...players.values()] });
})

But on the response im only getting teams: Array(0) and same for players I know its something with the async context but cant figure out how to get it to behave as intended Ended up finding the solution, changed to a for await loop

Solution

Arctic•8mo ago

POST = async(request) => {
  fetch initial data...
  const players: Map<string, Player> = new Map();
  const teams: Map<string, Team> = new Map();
  for await (const match of initialdata){
    validatematch()
    if(matchisvalid){
      match.stats.forEach((stat) => {
        stat.stats.teams.forEach((team) => {
            teams.set(team.TeamId, team);
            team.players.forEach((player) => {
                players.set(player.puuid, player);
            });
        });
      });
    }
  }
  return Response.json({ teams: [...teams.values()], players: [...players.values()] });
})

POST = async(request) => {
  fetch initial data...
  const players: Map<string, Player> = new Map();
  const teams: Map<string, Team> = new Map();
  for await (const match of initialdata){
    validatematch()
    if(matchisvalid){
      match.stats.forEach((stat) => {
        stat.stats.teams.forEach((team) => {
            teams.set(team.TeamId, team);
            team.players.forEach((player) => {
                players.set(player.puuid, player);
            });
        });
      });
    }
  }
  return Response.json({ teams: [...teams.values()], players: [...players.values()] });
})

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Weird behavior in TS api endpoint