Update: I'm sure you've all read about Sketch leaving the App Store (more info at http://sketchapp.com/exit). I can't say I'll miss fighting with the sandbox, so I guess it's time to freeze this project : )

Sketch Sandbox

A small library to get around sandbox issues in Sketch.

Why?

I'll write a real explanation when I have the time, but if you don't know why you need this, this is definitely not for you :)

The library is not heavily tested, so please file an issue if it doesn't work for you :)

Usage

• include the 'sandbox.js' library in your plugin, using #import 'sandbox.js'

• ask the user to authorize a path, like this:

    new AppSandbox().authorize(path, callback)
  

  where path is an absolute path to a folder, and callback is a JavaScript function that will be executed if the user authorizes the operation.

Notes

• Once a user authorizes a folder, you'll be able to write to its subfolders.

Example

This is my personal favorite way of dealing with sandboxing issues: just ask the user for permission to write to her $HOME folder:

var home_folder = "/Users/" + NSUserName()
new AppSandbox().authorize(home_folder, function(){
  // do whatever you need to do here
})

This is probably overkill, unsafe, and unreasonable to ask. But on the other hand, you'll only need the user to authorize Sketch once (regardless of the plugin, authorization is per-app, not per-plugin :). As explained in the Notes section, once the user authorizes its $HOME folder, you'll be able to read & write from its subfolders (including the 'Documents' and 'Dropbox' folders :)