app/views/alchemy/admin/uploader/_setup.html.erb
<script>
Alchemy.uploader_defaults = {
file_size_limit: <%= configuration(:uploader)['file_size_limit'] || 100 -%>,
upload_limit: <%= configuration(:uploader)['upload_limit'] || 50 -%>,
allowed_filetype_pictures: "<%= configuration(:uploader)['allowed_filetypes']['alchemy/pictures']&.join(", ") || '*' -%>",
allowed_filetype_attachments: "<%= configuration(:uploader)['allowed_filetypes']['alchemy/attachments']&.join(", ") || '*' -%>",
}
</script>