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loose-interval Is designed to be similar to setInterval but for tasks that you don't want to overlap. Instead of starting the process every interval milliseconds, it pauses interval milliseconds between the completion and next execution.


var looseInterval = require("loose-interval")
// your function must provide a callback to call when it is done 
function someSlowTask(callback) {
  /* copy a bunch of files, or scrape a website or something */
  /* phew! that took a while, but I'm done now, let's callback */
  callback(some, cool, args)
// Run your task waiting a minute between finish & rexecution 
var task = looseInterval(someSlowTask, 60000)
// Execute a callback whenever it completes 
var task = looseInterval(someSlowTask, 60000, console.log)
// Stop recurrence of your task 
// Run it one time 


looseInterval(fn [,interval] [,callback])

Create a task. Requires a function (which has a callback) to execute. If no interval is given, it will not be executed or recur without .runOnce or .start being called.

Interval is in milliseconds, and is the pause between your function's completion and next execution.

If a callback is provided, that callback will be executed with whatever arguments your function provides.


Start or change the interval of a recurring task. Interval is in milliseconds.


Stop the task for recurring. Can still be executed with .runOnce or rescheduled with .start


Run the function a single time, without repeating. This does not respect a schedule version and can cause overlapping tasks.