cli/src/exec.js at master · magic/cli · GitHub

39 lines (31 loc) · 1.06 KB

import child_process from 'child_process'

import error from '@magic/error'

const libName = '@magic/cli.exec'

/** @typedef {child_process.ExecOptionsWithStringEncoding & { stderrToStdout?: boolean }} CLIExecOptions */

/**

* Executes a shell command using child_process.exec

* @param {string} cmd - The shell command to execute.

* @param {CLIExecOptions} [options = {}] - Execution options.

* @returns {Promise<string>} Resolves with stdout or stderr (if stderrToStdout = true), rejects with Error.

export const exec = (cmd, options) =>

new Promise((resolve, reject) => {

const { stderrToStdout = false, ...opts } = options || {}

child_process.exec(cmd, opts, (err, stdout, stderr) => {

if (err) {

const e = error(err, 'E_EXEC_ERR')

reject(e)

return

}

if (stderr) {

if (stderrToStdout) {

resolve(stderr)

return

}

const e = error(new Error(`${libName}: ${cmd} error: ${stderr}`), 'E_EXEC_STDERR')

reject(e)

return

}

resolve(stdout)

})

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