A simple utility for aggregating cleanup functions for async programming problems.
npm install finally-aggregatorA simple utility for aggregating cleanup functions for async programming problems.
``
var FinallyAggregator = require('finally-aggregator');
var cleaner = new FinallyAggregator();
`
inParallel(
[
createTmpFile,
performActionThatErrors
],
function (err) {
// how do I tell createTempFile to cleanup!?
}
);
`
function createTmpFile(cleaner, next) {
/// ...
cleaner.add(cleanupTmpFile);
next();
}
inParallel(
[
createTmpFile.bind(null, cleaner),
performActionThatErrors.bind(null, cleaner)
],
function (err) {
if (err) cleaner.finish();
}
);
1. The FinallyAggregator will queue up functions by using .add(fn)..finish()
2. Once is called all queued functions will execute..add(fn)
3. If is called after .finish()` it will execute immediately.
This lets us queue up cleanup if we have not reached a point where cleanup is desired, or perform cleanup if we have passed the point where cleanup is called for.