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graveshell

v0.0.1

Published

A process runner based on es6 template strings.

Downloads

1

Readme

graveshell

Run shell commands as simply as you would in Bash, without the overhead of running in an actual shell. Utilizes es6 tagged template strings for a nice intuitive syntax. Calls execa under the hood to process the commands.

Installation

npm install graveshell

Usage

import $ from 'graveshell';

const dir = '/my/directory with spaces';
const { stdout } = await $`ls ${dir}`;
const files = stdout.split('\n');

The default function exported by graveshell is overloaded - it can be called as both a template tag and a function.

As a template tag, it will treat all interpolated variables as if they were quoted, and pass along to execa, returning the Promise result from execa.

As a function, it allows you to pass an options object along to execa. It actually returns a new template tag function bound to the passed in options object, so you can then call it with your shell command.

const message = 'This is my commit message';
await $({ cwd: 'my/package' })`git commit -m ${message}`;

Within the command's string template, whitespace is ignored, so you can format your command nicely:

const data = 'key=value';
const url = 'http://my-url.com';

const { stdout } = await $`
  curl
    -X POST
    -d ${data}
    ${url}
`;

A few convenience functions are exposed that call execa with a preconfigured options object.

run

Calls execa with stdio: 'inherit':

// options will be set to { stdio: 'inherit' }
$.run`my-command`;

devnull

Calls execa with stdio: 'ignore':

// options will be set to { stdio: 'ignore' }
$.devnull`my-command`;