Axial
Repository F# setup
open System
open System.IO
open System.Threading
open System.Threading.Tasks
open Axial
open Axial.Layers
open Axial.Console
open Axial.FileSystem
open Axial.Hosting
open Axial.Hosting.Browser
open Axial.Hosting.Node
open Axial.HttpClient
open Axial.PlatformService
open Axial.Process
open Axial.State
open Axial.Telemetry
open Axial.Telemetry.JavaScript

Specifications capture stdout and stderr by default. Process.run returns exact bytes and an encoding-aware text view:

let! result =
    Process.command "device-tool" [ "inspect" ]
    |> Process.run

printfn "%s" result.StdOut
let bytes = result.StdOutCapture.Bytes
Configure output with `Process.stdout` and `Process.stderr`. Targets include complete capture, bounded tail capture, console forwarding, inherited handles, discard, files, sinks, callbacks, and tee composition. 
let! result =
    Process.command "device-tool" [ "diagnose" ]
    |> Process.stdout (OutputTarget.Tee [ OutputTarget.Console; OutputTarget.CaptureTail 65536 ])
    |> Process.run
Use `Process.stream` when output must be handled before completion: 
let events =
    Process.command "device-tool" [ "watch" ]
    |> Process.framing OutputFraming.Lines
    |> Process.stream

let! collected = events |> FlowStream.runCollect
The stream emits `ProcessEvent.Output` values followed by one `ProcessEvent.Completed`. Each output event identifies its stage, channel, text, and timestamp. Pulling provides bounded backpressure. Ending consumption early interrupts the producer fiber, which terminates the native process topology before the Flow scope closes.

OutputTarget.Inherit gives the child the host handle directly. Inherited output cannot be observed, captured, or combined in a tee because it bypasses Axial's redirected streams.