"use strict";
  
  exports.implementation = class ValidityStateImpl {
    constructor(globalObject, args, privateData) {
      const { element, state = {} } = privateData;
  
      this._element = element;
      this._state = state;
    }
  
    get badInput() {
      return this._failsConstraint("badInput");
    }
  
    // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#suffering-from-a-custom-error
    get customError() {
      return this._element._customValidityErrorMessage !== "";
    }
  
    get patternMismatch() {
      return this._failsConstraint("patternMismatch");
    }
  
    get rangeOverflow() {
      return this._failsConstraint("rangeOverflow");
    }
  
    get rangeUnderflow() {
      return this._failsConstraint("rangeUnderflow");
    }
  
    get stepMismatch() {
      return this._failsConstraint("stepMismatch");
    }
  
    get tooLong() {
      return this._failsConstraint("tooLong");
    }
  
    get tooShort() {
      return this._failsConstraint("tooShort");
    }
  
    get typeMismatch() {
      return this._failsConstraint("typeMismatch");
    }
  
    get valueMissing() {
      return this._failsConstraint("valueMissing");
    }
  
    _failsConstraint(method) {
      const validationMethod = this._state[method];
      if (validationMethod) {
        return validationMethod();
      }
  
      return false;
    }
  
    get valid() {
      return !(this.badInput || this.valueMissing || this.customError ||
              this.patternMismatch || this.rangeOverflow || this.rangeUnderflow ||
              this.stepMismatch || this.tooLong || this.tooShort || this.typeMismatch);
    }
  };