Support returning cursor offset

[mkdynamic]

I have monkey patched locally (see below), but would be great to have a better solution upstream. Any ideas on how to include support for this in a nicer way?

async function run(cwd, { args, clientEnv }, text) {
    //...

    const opts = {
        ...options,
        filepath: fullPath
    };

    return JSON.stringify(prettier.formatWithCursor(text, opts));
}

[fsouza]

I assume you'd need to provide the cursor position somehow? And then return the updated position to the caller.