I would love to have translatable strings as an export. What I mean is instead of the output being this:
'label' => 'Label',
'name' => 'label',
'instructions' => 'Instructions',
The output would be:
'label' => __( 'Label' ),
'name' => 'label',
'instructions' => __( 'Instructions' ),
A textdomain is fairly easy to add using a build process such as the ‘addtextdomain’ task in this grunt plugin: https://www.npmjs.org/package/grunt-wp-i18n.
I think the PHP tools within WordPress contain a similar function.