datahub/wherehows-web/app/components/login-form.ts

import Component from '@ember/component';
import { get } from '@ember/object';
import { assert } from '@ember/debug';

export default class LoginForm extends Component {
  classNames = ['nacho-login-form'];

  /**
   * External action to be invoked on form submission
   * @type {Function}
   * @memberof LoginForm
   */
  onSubmit: Function;

  constructor() {
    super(...arguments);

    // Ensure that the onSubmit action passed in on instantiation is a callable action
    const typeOfOnSubmit = typeof this.onSubmit;
    assert(
      `Expected action onSubmit to be an function (Ember action), got ${typeOfOnSubmit}`,
      typeOfOnSubmit === 'function'
    );
  }

  actions = {
    /**
     * Handle the login for submission
     */
    userDidSubmit(this: LoginForm) {
      // Trigger action on parent controller
      get(this, 'onSubmit')();
    }
  };
}