Too often I find myself writing this type of code:
function cleanup(){
// Doesn't matter what this does, it just needs
// to be run after the function is done doing the thing
}
function doTheThing(){
try {
// do something that could throw an error
cleanup();
return results;
} catch(error) {
// handle the error
cleanup();
return error;
}
}
const result = doTheThing();
Essentially, cleanup() needs to be ran regardless if our function was successful or not. Luckily, JS provides a nice way to do that for us 🥳
function cleanup(){
// Doesn't matter what this does, it just needs
// to be run after the function is done doing the thing
}
function doTheThing(){
try {
// do something that could throw an error
return results;
} catch(error) {
// handle the error
return error;
} finally {
// the finally block gets run regardless of
// whether we had an error or not
cleanup();
}
}
const result = doTheThing();
So using finally can clean up our code quite a bit!
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