aseprite-cli

A simple wrapper for the Aseprite CLI.

Install

npm install aseprite-cli

Usage

To use the Aseprite wrapper, call Aseprite.exec and pass any number of strings, arrays, or objects. Strings and arrays will be added to the command line as-is; object keys will automatically be dasherized (for example, sheetType becomes --sheet-type).

const Aseprite = require('aseprite-cli');

await Aseprite.exec('*.aseprite', {
    sheetType: 'packed',
    sheet: 'out.png',
    data: 'out.json'
});
// => Aseprite --batch *.aseprite --sheet-type packed --sheet out.png --data out.json

Although objects make option passing look a little nicer, for more control you can format all of the arguments in the command line yourself.

const Aseprite = require('aseprite-cli');

await Aseprite.exec('*.aseprite', [
    '--sheet-type', 'packed',
    '--sheet', 'out.png',
    '--data', 'out.json'
]);
// => Aseprite --batch *.aseprite --sheet-type packed --sheet out.png --data out.json

Replace exec with execSync to use synchronously.

const Aseprite = require('aseprite-cli');

Aseprite.execSync('*.aseprite', { sheet: 'out.png', sheetType: 'packed' });
// => Aseprite --batch *.aseprite --sheet out.png --sheet-type packed

The API returns an object similar to the response of child_process.spawnSync, with code, signal, stdout and stderr properties. You can use these to do diagnostics and error-checking.

const Aseprite = require('aseprite-cli');

console.log(Aseprite.execSync('--version').stdout);

By default, aseprite-cli will automatically find your local installation of Aseprite by searching the typical install paths for your operating system. If this doesn't work for you, pass in one or more search paths to check in addition to the normal operating system paths.

// Use the `.instance` function to return an instance with custom search paths
const Aseprite = require('aseprite-cli').instance(['C:\\aseprite\\aseprite.exe', '~/aseprite/aseprite']);

console.log(Aseprite.execSync('--version').stdout);

// You can also use syntax sugar 'at'
const Aseprite = require('aseprite-cli').at('/usr/local/aseprite');

console.log(Aseprite.execSync('--version').stdout);

Development

Pull requests welcome.

To run tests locally:

npm install
npm test

To try out changes on your own system, open your node console and try running a command:

$ node
> require('.').execSync('--version')
{
  status: 0,
  signal: null,
  output: [
    null,
    <Buffer 41 73 65 70 72 69 74 65 20 31 2e 32 2e 31 38 0a>,
    <Buffer >
  ],
  pid: 29332,
  stdout: 'Aseprite 1.2.18\n',
  stderr: ''
}
>

Disclaimer

This project is not affiliated with or endorsed by the Aseprite team. It uses whatever Aseprite binary is already installed on your system, and does not include Aseprite or provide additional functionality beyond what Aseprite already provides.