serializeasync
Make sure that an async function is not run multiple times at once.
var serializeAsync = require('serializeasync');
function cannotRunInParallel(cb) {
require('fs').writeFile('/foo/bar.txt', 'utf-8', cb);
}
var serialized = serializeAsync(cannotRunInParallel);
// Now it's safe to do this (the second invocation will be queued up
// until the first has completed):
serialized(function () {});
serialized(function () {});You can also control set the concurrency level to more than one:
var serialized = serializeAsync(cannotRunInParallel, {maxConcurrency: 4});Installation
Make sure you have node.js and npm installed, then run:
npm install serializeasync
License
3-clause BSD license -- see the LICENSE file for details.