When to Use the Promise.allSettled() Method
Explore how Promise.allSettled() helps manage multiple asynchronous tasks when some may fail but others succeed. Learn to apply this method to process files separately, call independent APIs, and wait for animations, ensuring your code handles partial success gracefully without stopping the entire operation.
Handling multiple promises in order
The Promise.allSettled() method is a slight variation of Promise.all(); however, it is best suited for when we want to ignore rejections, handle rejections differently, or allow partial success. Here are some common use cases for Promise.allSettled().
Processing multiple files separately
Usually, we see multiple files that were dependent on one another to succeed. There are also some cases where working on multiple files separately means we don’t need to stop the entire operation if one fails. We go ahead and complete the successful operations and then log the failed ones to retry later. Here’s an example in Node.js:
This example reads in a series of files, reverses the order of the text in the files, and then writes that text back to the original files (we can, of course, ...