`Microsoft 365 Agents Playground` is a component integrated in [Microsoft 365 Agents Toolkit](https://learn.microsoft.com/microsoftteams/platform/toolkit/teams-toolkit-fundamentals?pivots=visual-studio-code-v5). This component helps developers to debug, t

Iterate directory up.

Callbag operator that conditionally lets data pass through

High-priority task queue for Node.js and browsers

Tiny helper to prevent blocking Node.js event loop

Callbag factory that concatenates data from multiple callbag sources

The concrete agent loop plugin for the DeepSeek Harness

fast, tiny `queueMicrotask` shim for modern engines

Run a list of functions in order in a given object context. The functions can be callback-taking or promise-returning.

C function to get the current libuv event loop for N-API

Exposes stats about the libuv default loop

JavaScript SDK for the Seam API written in TypeScript.

Use @microsoft/m365agentsplayground instead. This package is maintained for backward compatibility.

Like `await Promise.all(mytasks.map(async (item) => ....))`, but with super-powers

Measure event loop lag

Library of associative containers; it implements TreeMap, TreeSet, TreeMultiMap and TreeMultiSet classes

Polyfill for perf_hooks.monitorEventLoopDelay(...)

A sorted list of key-value pairs in a fast, typed in-memory B+ tree with a powerful API.

Iterate over a collection, invoking a function for each element.

A feedback loop between a person reviewing a running web app and the coding agent building it. A dev-only panel bottom right of the page takes notes, pins them to real elements with a click, and writes them to a JSON file in the repo with route, selector