@jsdevtools/ez-spawn/lib/sync.js

Simple, consistent sync or async process spawning

"use strict";

const normalizeArgs = require("./normalize-args");
const normalizeResult = require("./normalize-result");
const spawnSync = require("cross-spawn").sync;

module.exports = sync;

/**
 * Executes the given command synchronously, and returns the buffered results.
 *
 * @param {string|string[]} command - The command to run
 * @param {string|string[]} [args] - The command arguments
 * @param {object} [options] - options
 * @returns {Process}
 *
 * @see {@link normalizeArgs} for argument details
 */
function sync () {
  // Normalize the function arguments
  let { command, args, options, error } = normalizeArgs(arguments);

  if (error) {
    // Invalid arguments
    normalizeResult({ command, args, options, error });
  }
  else {
    let result;

    try {
      // Run the program
      result = spawnSync(command, args, options);
    }
    catch (error) {
      // An error occurred while spawning or killing the process
      normalizeResult({ error, command, args, options });
    }

    // Return the results or throw an error
    return normalizeResult(Object.assign({}, result, { command, args, options }));
  }
}