Execute Powershell script from Node.js

You can just spawn a child process "powershell.exe" and listen to stdout for command output and stderr for errors:

var spawn = require("child_process").spawn,child;
child = spawn("powershell.exe",["c:\\temp\\helloworld.ps1"]);
child.stdout.on("data",function(data){
    console.log("Powershell Data: " + data);
});
child.stderr.on("data",function(data){
    console.log("Powershell Errors: " + data);
});
child.on("exit",function(){
    console.log("Powershell Script finished");
});
child.stdin.end(); //end input

In addition to the accepted answer, there is a Node.JS Library called Edge.js that allows various langugages to be executed from within Node. Including C#, J#, .Net, SQL, Python, PowerShell and other CLR languages.

Note that Edge.js requires PowerShell 3.0 & only works on Windows (many of the other features work on Mac and Linux too).

This option works for me, when the script is not already there, but you want to generate some commands dynamically, send them, and work with the results back on node.

var PSRunner = {
    send: function(commands) {
        var self = this;
        var results = [];
        var spawn = require("child_process").spawn;
        var child = spawn("powershell.exe", ["-Command", "-"]);

        child.stdout.on("data", function(data) {
            self.out.push(data.toString());
        });
        child.stderr.on("data", function(data) {
            self.err.push(data.toString());
        });

        commands.forEach(function(cmd){
            self.out = [];
            self.err = [];
            child.stdin.write(cmd+ '\n');
            results.push({command: cmd, output: self.out, errors: self.err});
        });
        child.stdin.end();
        return results;
    },
};

module.exports = PSRunner;