@eform/ng-formio-builder/src/directives/validApiKey.js

The Angular.js form builder component.

/*
* Prevents user inputting invalid api key characters.
* Valid characters for an api key are alphanumeric and hyphens
*/
module.exports = function() {
  return {
    require: 'ngModel',
    link: function(scope, element, attrs, ngModel) {
      var invalidRegex = /^[^A-Za-z_]+|[^A-Za-z0-9\-\._]+/g;
      ngModel.$parsers.push(function(inputValue) {
        var transformedInput = inputValue.replace(invalidRegex, '');
        if (transformedInput !== inputValue) {
          ngModel.$setViewValue(transformedInput);
          ngModel.$render();
        }
        return transformedInput;
     });
    }
  };
};