SMRTR ProgrammingDec 21, 2024Daily.dev

I misunderstood Promise.all in JavaScript

SMRTR summary

Promise.all is used to handle multiple promises simultaneously, not to run them concurrently. It waits for all promises to resolve before returning their results in an array. Promises naturally run concurrently when called. Using Promise.allSettled with Promise.all can enhance error handling and logging. This combination allows for gathering information on all promises, even if some fail, providing a more comprehensive view of promise outcomes and making debugging easier.

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