Unchained UI

Flow

Various execution flow helpers

• series
• parallel
• debounce
• throttle
• retry

Series

series(tasks, done)

Runs the functions in the tasks array or object in series, each one running once the previous function has completed. If any functions in the series pass an error to its callback, no more functions are run, and done is immediately called with the value of the error. Otherwise, done receives an array or object of results when tasks have completed.

Parallel

parallel(tasks, done)

Run the tasks array of functions in parallel, without waiting until the previous function has completed. Once the tasks have completed, the results are passed to the final callback as an array.

Debounce

debounce(func, wait, immediate)

Creates a debounced function that delays invoking func until after wait milliseconds have elapsed since the last time the debounced function was invoked. The debounced function comes with a cancel method to cancel delayed func invocations. Provide immediate to indicate whether func should be invoked on the leading or trailing edge of the wait timeout. The func is invoked with the last arguments provided to the debounced function.

Throttle

throttle(func, wait, immediate)

Creates a throttled function that only invokes func at most once per every wait milliseconds. The throttled function comes with a cancel method to cancel delayed func invocations. Provide immediate to indicate whether func should be invoked on the leading or trailing edge of the wait timeout. The func is invoked with the last arguments provided to the throttled function. throttle(f, ms, ctx, immediate)

Retry

retry(func, options)

Wrapper to retry function calls with an exponential backoff strategy. Returns the cancel function.

• func — function
• options
  • interval – number, ms, default is 1000. The number of milliseconds before starting the first retry.
  • maxInterval – number, ms, default is 30000. The maximum number of milliseconds between two retries.
  • maxAttempts – number, default is 10. The maximum amount of times to retry the operation.
  • decay — number, default is 1.5. The exponential factor to use.

License MIT

© velocityzen