htmx.defineExtension('path-params', {
  onEvent: function(name, evt) {
    if (name === 'htmx:configRequest') {
      evt.detail.path = evt.detail.path.replace(/{([^}]+)}/g, function(_, param) {
        var val = evt.detail.parameters[param]
        delete evt.detail.parameters[param]
        return val === undefined ? '{' + param + '}' : encodeURIComponent(val)
      })
    }
  }
})