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Deno + LitHTML: No build, no bundle, all streaming

Litre is a web framework intended to work with LitHTML and SSR

Embrace the future of ES Modules, Import Maps, and Web Streams.

Starting Litre server

import { start } from 'https://raw.githubusercontent.com/Stradivario/litre/master/src/mod.ts';

start({
  importmap: await Deno.readTextFile('importmap.json'),
  folder: 'app',
  port: 4200,
});
make dev

HTMLElement

class AppRoot extends HTMLElement {
  constructor() {
    super();
    this.attachShadow({ mode: "open" });
  }
  connectedCallback() {
    const div = document.createElement("div");
    div.innerHTML = `Hello from SSR Webcomponents using Deno!`;
    this.shadowRoot?.append(div);
  }
}

customElements.define('app-root', AppRoot)

export default Litre({
  page: () => Ocean.html`
    <!DOCTYPE html>
    <html lang="en">
      <head>
        <title>My app</title>
      </head>
      <body>
        <app-root></app-root>
      </body>
    </html>
  `,
});

LitHTML

import {
  html,
  Component,
  LitElement,
} from 'https://cdn.esm.sh/v53/@rxdi/lit-html@0.7.127';

@Component({
  selector: 'app-root',
  template(this) {
    return html`Hello from SSR Webcomponents using Deno!`;
  },
})
export class AppRoot extends LitElement {}

export default Litre({
  page: () => Ocean.html`
    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8">
        <title>My app</title>
      </head>
      <body>
        <app-root></app-root>
      </body>
    </html>
  `,
});

Partially Hydrated server side rendering

We define components to be loaded after javascript is loaded

import {
  Component,
  html,
  LitElement,
} from 'http://localhost:8080/@rxdi/lit-html';

@Component({
  selector: 'app-root',
  template(this) {
    return html`
      <rx-button palette="danger">Test Button</rx-button>
      <rx-accordion-item>
        <div slot="title">Why should i upgrade ?</div>
        <div slot="content">Optimized for best experience...</div>
      </rx-accordion-item> `;
  },
})
export class AppRoot extends LitElement {}

export default Litre({
  page: () => Ocean.html`
    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8" />
        <title>My app</title>
        <script type="module">
          import 'http://localhost:8080/@rxdi/ui-kit/accordion-item';
          import 'http://localhost:8080/@rxdi/ui-kit/button';
          
          import { Bootstrap} from 'http://localhost:8080/@rxdi/core';
          import { ReactiveUiModule } from 'http://localhost:8080/@rxdi/ui-kit';
          Bootstrap(ReactiveUiModule.forRoot()).subscribe()
        </script>
      </head>
      <body>
        <app-root></app-root>
      </body>
    </html>
  `,
});