A simple Frontend Validation Error bag meant to work with Laravel validation

n-errorbag.js

class ErrorBag {
  constructor(errors = {}) {
    this.setErrors(errors);
  }

  hasErrors() {
    return !!this.keys.length;
  }

  get keys() {
    return Object.keys(this.errors);
  }

  hasError(key) {
    return this.keys.indexOf(key) > -1;
  }

  firstKey() {
    return this.keys[0];
  }

  first(key) {
    return this.errors[key] ? this.errors[key][0] : undefined;
  }

  setErrors(errors) {
    this.errors = errors;
  }

  clearAll() {
    this.setErrors({});
  }

  clear(key) {
    return delete this.errors[key];
  }
}

export default ErrorBag;