faster-dom

Faster Dom

Lightweight replacement of React + MobX + React Router (I hope in future Angular/Vue), which does not use the virtual DOM comparison, but the re-render of only the changed parts. Abandon the HTML template in favor of their interpretation in JS, give to us tree-shaking is components/templates and the speed of work increases since the time to parse the template is zero.

The library allows you to create quick and responsive interfaces using only JS / TS. With this you will get the minimum application size, speed and ease of development.

OFFICIAL BENCHMARK RESULTS

Usage

yarn add faster-dom@0.0.48-alpha

index.html

<div id="timer"></div>

timer.ts

import {
    Component,
    FastDomNode,
    createComponent,
    fdObject,
    fdIf,
    fdValue,
} from 'faster-dom';
// Extends your class from Component
class Timer extends Component {
    private timer: number;

    // Put here all reactive values, when component will be destroyed
    // They will be destroy automatically
    protected reactive = {
        // create reactive value
        // if you provide here object/array, you on change need always return new one, not link on previous
        counter: fdValue(0),
        // create reactive for true/false
        classOdd: fdIf(true),
    }
    // All fdObjects(for attrs/prop/classList binding) must be here for auto destroy
    fdObjects = {
        classList: new fdObject<boolean>({
            "odd": this.currentClass
        }),
    }

    // Create shortcuts, not required
    get counter () {
        return this.reactive.counter;
    }
    // Create shortcuts, not required
    get currentClass () {
        return this.reactive.classOdd;
    }

    onInit () {
        const timer = () => {
            this.timer = window.setTimeout(() => {
                this.counter.value += 1; // increase counter on '1'
                // If counter value odd then 'true'
                this.currentClass.value = this.counter.value % 2 === 0 ? true : false;
                timer();
            }, 1000);
        }

        timer();
    }

    onDestroy () {
        // Use destroy hook for clear timeout
        clearTimeout(this.timer);
    }
    // Provide template
    template: FastDomNode = {
        tag: 'div',
        // Create reactive class
        classList: this.fdObjects.classList,
        // Create reactive textValue
        textValue: this.counter,
    }
}

export function createTimer() {
    return createComponent(Timer);
}

index.ts

import { bootstrap } from 'faster-dom';
import { createTimer } from './timer';

bootstrap('#timer', createTimer);

📺 DEMO 📺 DEMO at StackBlitz

Features

1. Size - 4.1 kB or 1.38 kB gzipped.
2. The library rewrites only changes and only when it is necessary.
3. Performance - going to guarantee 60 fps.
4. Names of imported functions and classes are not finally and can be discussed.
5. There is a tree-shaking for components and templates !!!.
6. Router + Resolver support!

Performance

Right now directive fdFor not optimized, on each change full rerender, and this have so much effect on (swap, remove, append)

CODE OF THE TESTS

OFFICIAL BENCHMARK RESULTS

How it works

Here will be good api

Motivation

1. The performance of user interaction and interface speed.
2. The large size of top frameworks (Angular / React / VueJs).
3. Implements the component approach of creating interfaces with optimal speed, and the least number of a possible hacks.
4. The ability of support a tree-shaking in a component's templates.
5. Component should be splited by a file (template/reactive/listeners).

Current Status

1. The support of events.
2. Lifecycle hooks onInit and onDestroy.
3. The support of inputs.
4. if condition and for directive.
5. Reactive classes and attributes bindings.
6. Supports router

TODO (contributing is appreciated)

1. Proper types annotation
2. Html transpiler

Help me please if you are interested.