Handling multiple API calls with Promise.allSettled()

The Promise.allSettled() method returns a promise that resolves after all of the given promises have either fulfilled or rejected, with an array of objects that each describes the outcome of each promise.

1const promise1 = Promise.resolve(3);
2const promise2 = new Promise((resolve, reject) => setTimeout(reject, 100, 'foo'));
3const promises = [promise1, promise2];
4
5Promise.allSettled(promises).
6  then((results) => results.forEach((result) => console.log(result.status)));
7
8// expected output:
9// "fulfilled"
10// "rejected"

MDN doc

For example, look at the dummy data given below I, want to make an API call to get the client’s details by clientId

1[
2  {
3    bed : 'bed name',
4    clientId : '1548765'
5  },
6  {
7    bed : 'bed name2',
8    clientId : '1548766'
9  }
10]

For each client, I have to make an API call of getClientById and I don’t want my program to proceed further until details for all the clients is available

1// In this case what I can do is 
2
3Promise.allSettled(
4  data.map(e=> {
5    return CALL_API(`client/${e.clientId}` , 'get')
6  })
7).then(responseArr => {
8  responseArr.forEach(res=>{
9    console.log(res);
10    // res.status & res.value
11  })
12})

Handling multiple API calls with Promise.allSettled()

The Promise.allSettled() method returns a promise that resolves after all of the given promises have either fulfilled or rejected, with an array of objects that each describes the outcome of each promise.

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