Run Powershell 7 commands in Node.js

pwsh.mjs

import {exec} from "node:child_process";

/**
 * Runs a Powershell 7 command.
 * @param {string} command
 * @returns {string}
 * @example const stdout = await pwsh(`Write-Output "Hello World"`);
 * @example const stdout = await pwsh(`Write-Output "Hello"; Write-Output "World"`);
 */
export async function pwsh(command) {
  return new Promise((resolve, reject) => {
    exec(
      `[System.Console]::InputEncoding = [System.Console]::OutputEncoding = [System.Text.Utf8Encoding]::new();${command}`,
      {
        shell: "pwsh.exe",
        execArgv: "-nologo -noninteractive -noprofile -command"
      },
      (error, stdout, _stderr) => {
        if (error) {
          reject(error);
        } else {
          resolve(stdout);
        }
      }
    );
  });
}

// --------------------------------- //
// Usage examples
// --------------------------------- //

// Single command
const stdout = await pwsh(`Write-Output "Hello World"`);

// Multiple commands
const stdout = await pwsh(`Write-Output "Hello"; Write-Output "World"`);

// Non-ASCII
const stdout = await pwsh(`Write-Output "Héllô"`);
const stdout = await pwsh(`Write-Output "asdbščřoldTxtéíáuijhj"`);
const stdout = await pwsh(`Write-Output "帰国"`);