# `renderer/core/scheduler`
This directory contains the [Main Thread Scheduling
APIs](https://github.com/WICG/main-thread-scheduling) (`window.scheduler`).
**Note:** These APIs are experimental and the details are still in flux.
## APIs Implemented
`scheduler.postTask()`[[explainer](https://github.com/WICG/main-thread-scheduling/blob/master/PrioritizedPostTask.md), [design doc](https://docs.google.com/document/d/1Apz-SD-pOagGeyWxIpgOi0ARNkrCrELhPdm18eeu9tw)]
## `scheduler.postTask()`
For the full API shape and general design, please refer to the (active)
[design doc](https://docs.google.com/document/d/1Apz-SD-pOagGeyWxIpgOi0ARNkrCrELhPdm18eeu9tw).