izelnakri / emberx

Ember like router and libraries for glimmer.js

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EmberX: Explicitly resolvable & node.js friendly Ember.js

Working example/E2E Test

Experimental router for glimmer, will ship as @emberx/router & @emberx/component & @emberx/helper & @emberx/test-helpers and @emberx/string.

This project allows you to import your routes, components and helpers in node.js. Thus removes need for any ember specific build system. You can run your tests by using QunitX and @emberx/test-helpers.

When stable, check examples folder for the documentation.

# will change:
npm install && parcel examples/blog/index.html

Current Status

  • @emberx/component - Test coverage: ✔️
  • @emberx/string - Test coverage: ✔️
  • @emberx/helper - Test coverage: ✔️
  • @emberx/test-helpers - Test coverage: ✔️
  • @emberx/router - Test coverage: ~70%. Missing: query param handling, loading states, error states, this.paramsFor()
  • @emberx/ssr - Test coverage: 0%. Waiting to finish @emberx.router.

Although the project is not production-ready one can still experiment with it using the blog example as a guide. @emberx packages are distributed on npm

Differences between ember and emberx:

  • Everything is resolvable without a build system on node.js or JS module bundlers.
  • No controller abstraction, you can simply use the route object.
  • No runloop, we dont need it anymore.
  • test helpers(click(), keyPress() etc.) wait without a waiter when the fired action returns a promise during tests.
  • Explicit and flexible routes declarations with @emberx/router.
  • Ember Route model, beforeModel and afterModel hooks are static properties instead of instance methods.
  • No sticky queryParams, instead link building is explicit with <LinkTo @query={{hash param=value}}/> or with object helpers <LinkTo @query={{assign (hash active=true) this.router.queryParams}}/>.
  • No {{outlet}}, instead parent routes included in the child route template with {{yield}}. This allows compiling individual route files for the browser without a magical build step.
  • No need for initializers and instance initializers, all code runs in module file import and execution order.
  • Easily sharable/downloadable/distributable emberx components and routes with npm.

API Design

What if @ember/routing/router & @ember/routing/route were a tiny and explicitly resolvable router you could import from npm. Flexible and simple API below can be progressively backward-compatible and support current ember router definitions!

// in ./router.js

import Router from '@emberx/router';
import IndexRoute from './routes/index/route.ts';
import PostsRoute from './routes/posts/route.ts';
import PostsIndexRoute from './routes/posts/index/route.ts';
import PostsPostRoute from './routes/posts/post/route.ts';

Router.addServices({
  intl: new LocaleService(),
});

let router = Router.start([
  {
    path: '/',
    route: IndexRoute
  },
  {
    path: '/posts',
    route: PostsRoute,
    indexRoute: PostsIndexRoute
  },
  {
    path: '/posts/:slug',
    route: PostsPostRoute
  },
  {
    path: '/posts/:blog_post_id/comments',
    route: PostsPostCommentsRoute
  },
]);

export default router;

This API also will allow custom resolvers that can resolve current ember routers(ie. routes in Router.map(function() {})) with a specific resolver definition(classic or MUD) in future:

Backward-compatible API suggestion:

import Router from '@emberx/router';
import SomeCustomResolver from './custom-resolver';

Router.Resolver = SomeCustomResolver;

let existingMapDefinition = Router.map(function () {
  this.route("public", { path: "/" }, function () {
    this.route("index", { path: "/" });
    this.route("blog-post", { path: "/:slug" });
  });

  this.route("admin", function () {
    this.route("index", { path: "/" });
  });

  this.route("settings");
  this.route("login");
});

let router = Router.start([
  {
    path: '/',
    route: IndexRoute
  },
  {
    path: '/posts',
    route: PostsRoute,
    indexRoute: PostsIndexRoute,
  }
], existingMapDefinition);

export default router;

This experiment is also a sketch/request for a new ember edition.

Familiar @emberx/route:

import { Route, LinkTo, hbs, tracked, service, action, on } from '@emberx/router';

import t from '../helpers/t';
import Counter from '../components/Counter';

export default class IndexRoute extends Route {
  @service intl;

  @tracked dynamicObject;

  constructor(owner, args) {
    super(owner, args);

    window.setInterval(() => {
      this.dynamicObject = {
        dynamicDate: new Date().toString(),
      };
    }, 200);
  }

  static includes = {
    Counter
  };

  static model(): object {
    return {
      logo: 'https://emberjs.com/images/ember-logo.svg',
      dynamicObject: { dynamicDate: new Date() },
    };
  }

  static template = hbs`
    <div id="intro">
      <h1>This is some route</h1>

      <LinkTo @route="posts.post" @model="232">Go to post 232</LinkTo>

      <h5>Current locale is: {{this.intl.currentLocale}}</h5>
      <button type="button" {{on "click" this.changeLocale}}>Change locale</button>

      <p>Localized button example:</p>
      <button type="button">{{t "button.save" this.intl}}</button>


      <img src={{this.model.logo}}/>
      <h5>Logo is {{this.model.logo}}</h5>
    </div>

    {{this.dynamicObject.dynamicDate}}

    <Counter/>
  `;

  @action changeLocale(): void {
    this.intl.currentLocale = this.intl.currentLocale === 'en' ? 'es' : 'en';
  }
}

Familiar @emberx/component:

import Component, { service, tracked, action, renderComponent } from '@emberx/component';

class LocaleService {
  @tracked currentLocale: string;

  constructor(currentLocale: string) {
    this.currentLocale = currentLocale;
  }

  get currentLocale(): string {
    return this.currentLocale;
  }

  @action
  setLocale(locale) {
    this.currentLocale = locale;
  }
}

class AnotherComponent extends Component {
  @service locale;

  message = 'hello world';
  @tracked count = 55;

  static template = hbs`
    <div id="another-component">
      <p id="message">Current message: {{this.message}}</p>
      <p id="locale-info">Component gets rendered. Current locale is {{this.locale.currentLocale}}</p>
      <span>Count is {{this.count}}</span>
      <p id="received-arg">Received argument is {{@notice}}</p>
      <button {{on "click" this.increment}} id="increment-button">Increment</button>
      <button {{on "click" this.changeMessage}} id="another-message-button">Change message</button>
      <button {{on "click" (fn this.locale.setLocale "tr")}} id="change-locale-button">Change locale</button>
    </div>
  `;

  @action
  increment(): void {
    this.count++;
  }

  @action
  changeMessage(): void {
    this.message = 'message changed';
  }
}

class MainComponent extends Component {
  @service locale;
  @tracked mainMessage = 'hello world';

  get formattedMessage() {
    return this.mainMessage.toUpperCase();
  }

  // This is how you can do template imports
  static includes = {
    AnotherComponent,
  };
  static template = hbs`
    <p id="main-component-message">{{this.mainMessage}}</p>
    <p id="main-component-formatted-message">{{this.formattedMessage}}</p>
    <div id="another">
      <AnotherComponent @notice={{this.mainMessage}} />
    </div>
    <button {{on "click" this.changeMessage}} id="message-button">Change main message</button>
  `;

  @action
  changeMessage(): void {
    this.mainMessage = 'message changed';
  }
}

await renderComponent(MainComponent, {
  element: document.getElementById('ember-testing'),
  owner: { services: { locale: new LocaleService('en') } },
});

Template/Component imports are respecting typescript standards, thus can be easily run node.js with npm, allowing simple server side rendering.

This also allows the ability to distribute every component, route, helper, module as an npm package without a need for a build/addon system. Parent components can use static includes to include the components they depend on.

This experiment is also a sketch/request for a new ember edition. Deprecates ember controllers and makes ember-specific CLI systems an option rather than requirement. Allows "npm your way to ember", from a React alternative(glimmer) to a full-fledged ember application without ember-cli.

Prerequisites

You will need the following things properly installed on your computer.

Further Reading / Useful Links

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Ember like router and libraries for glimmer.js


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