(function() {
  function mergeObjects(obj1, obj2) {
    for (var key in obj2) {
      if (obj2.hasOwnProperty(key)) {
        obj1[key] = obj2[key]
      }
    }
    return obj1
  }

  htmx.defineExtension('include-vals', {
    onEvent: function(name, evt) {
      if (name === 'htmx:configRequest') {
        var includeValsElt = htmx.closest(evt.detail.elt, '[include-vals],[data-include-vals]')
        if (includeValsElt) {
          var includeVals = includeValsElt.getAttribute('include-vals') || includeValsElt.getAttribute('data-include-vals')
          var valuesToInclude = eval('({' + includeVals + '})')
          mergeObjects(evt.detail.parameters, valuesToInclude)
        }
      }
    }
  })
})()