Beej Beej126

Prerequisites

currently this requires at least Windows 11 insider beta channel - install guide
and "adb.exe" must be in your system path - install guide

	# C# syntax works under both pwsh core and legacy Windows Powershell which is capped at C# 5.0 and .Net Framework vs dotnet core
	Add-Type @"

	using System;
	using System.IO;

	public static class BigCsvSplitter
	{

	public static void Run()

	# https://www.nuget.org/packages/Microsoft.Net.Compilers.Toolset

	md cs-repl \| cd
	nuget install Microsoft.Net.Compilers.Toolset

	# run a CS script, a useful alternative to PowerShell itself
	echo 'Console.WriteLine("hello");' > script.csx
	. (gci -recurse csi.exe).FullName script.csx

	# run in REPL mode

	//helper function
	function groupBy(objectArray, property) {
	return objectArray.reduce((acc, obj) => {
	const key = obj[property];
	if (!acc[key]) {
	acc[key] = [];
	}
	// Add object to list for given key's value
	acc[key].push(obj);
	return acc;

	/////////////////////////////////////////////////////////////////////////////////////////
	//first some helper functions to tee up one last clean routine at the bottom

	//from: https://stackoverflow.com/questions/951021/what-is-the-javascript-version-of-sleep/39914235#39914235
	const sleep = s => new Promise(resolve => setTimeout(resolve, s * 1000));

	//from:https://stackoverflow.com/questions/37576685/using-async-await-with-a-foreach-loop/49432189#49432189
	Array.prototype.forEachAsync = async function (fn) { for (let t of this) { await fn(t) } }

	//get data

	# all syntax is pwsh v7+ compatible

	###########################################
	# the basic scenario is wanting to fire another codegen tool whenever `dotnet watch run` reports a change to specific source files
	# it's very fortunate dotnet watch already reports exactly what we need to trigger on
	###########################################
	# this code is very customized to watch my ServiceStack webapi project
	# and run the ServiceStack CLI tooling that autogens typescript DTOs from C# DTOs.
	#
	# i've also tailored to watching for specific errors, and trimming the debug output verbosity and changing console text color to catch the eye