skeleton-styler

Zero-dependency TypeScript Skeleton Loader Library for React, Vue, Angular & Vanilla JavaScript.

Generate fully customizable skeleton loading UIs with animation, JSON configuration, and framework-agnostic architecture.

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✨ Why skeleton-styler?

• ⚡ Zero dependency
• 🪶 Lightweight
• 🎨 Fully customizable styles & animations
• 🧩 Framework agnostic (React, Vue, Angular, Next.js, plain JS)
• 🧠 JSON-driven skeleton generation
• 📦 TypeScript-first API
• 🚀 Production ready

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Table of Contents

• skeleton-styler
  • ✨ Why skeleton-styler?
  • Table of Contents
  • Installation
  • Usage
    • Basic Example
    • 1. Vanilla HTML + JS
    • 2. ReactJS
    • 3. Angular
    • 4. JSON Configuration Example (fromJSON)
  • 🧩 SkeletonTemplate
    • Example
  • License

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Installation

npm install skeleton-styler

or

yarn add skeleton-styler

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Usage

Basic Example

import { ElementBuilder, SkeletonAnimation } from "skeleton-styler";

ElementBuilder.setConfigs({
  animation: SkeletonAnimation.Pulse,
  colors: ["#e0e0e0", "#c0c0c0"],
});

const skeleton = new ElementBuilder().setClass("skeleton").markAsSkeleton().generate();
document.body.appendChild(skeleton);

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1. Vanilla HTML + JS

const app = document.getElementById("app");
const skeletonCard = new ElementBuilder()
  .s_flex()
  .append(...Array.from({ length: 3 }).map(() => new ElementBuilder().markAsSkeleton()));

app?.appendChild(skeletonCard.generate());

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2. ReactJS

import React, { useState, useEffect, useRef } from "react";
import { SkeletonTemplate, ElementBuilder } from "skeleton-styler";

const skeletonInstance = SkeletonTemplate.UserAvatar({ r: 24, line: 2 });

const SkeletonWrapper = ({ loading, children, instance }) => {
  const ref = useRef(null);
  useEffect(() => {
    const el = ref.current;
    if (loading && el) {
      const skeleton = instance.generate();
      el.innerHTML = "";
      el.appendChild(skeleton);
    }
  }, [loading]);
  return loading ? <div ref={ref} /> : children;
};

export const MyComponent = () => {
  const [loading, setLoading] = useState(true);
  useEffect(() => {
    const timer = setTimeout(() => setLoading(false), 3000);
    return () => clearTimeout(timer);
  }, []);
  return (
    <SkeletonWrapper loading={loading} instance={skeletonInstance}>
      <div className="profile">
        <img src="/avatar.jpg" alt="User" width={48} height={48} />
        <p>Hello!</p>
      </div>
    </SkeletonWrapper>
  );
};

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3. Angular

import { Component, ElementRef, Input, OnChanges, SimpleChanges } from '@angular/core';
import { ElementBuilder } from 'skeleton-styler';

@Component({
  selector: 'app-skeleton-wrapper',
  template: '<ng-content *ngIf="!loading"></ng-content>',
  standalone: true,
})
export class SkeletonWrapperComponent implements OnChanges {
  @Input() loading = false;
  @Input() instance!: ElementBuilder;

  constructor(private elRef: ElementRef<HTMLElement>) {}

  ngOnChanges(changes: SimpleChanges) {
    const container = this.elRef.nativeElement;
    if (this.loading && this.instance) {
      const skeleton = this.instance.generate();
      container.innerHTML = '';
      container.appendChild(skeleton);
    } else {
      container.innerHTML = '';
    }
  }
}

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4. JSON Configuration Example (fromJSON)

import { ElementBuilder, SkeletonAnimation } from "skeleton-styler";

const jsonConfig = {
  skeleton: SkeletonAnimation.Progress,
  style: { display: "flex", flexDirection: "column", width: "100%" },
  children: [
    { skeleton: true, style: { width: "60px", height: "60px", borderRadius: "50%", margin: "8px" } },
    { skeleton: true, style: { width: "80%", height: "16px", margin: "8px 0" } },
  ],
};

const skeleton = ElementBuilder.fromJSON(jsonConfig);
document.body.appendChild(skeleton.generate());

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🧩 SkeletonTemplate

SkeletonTemplate provides ready-to-use skeleton UI components — all powered by ElementBuilder.

Example

import { SkeletonTemplate } from "skeleton-styler";

const card = SkeletonTemplate.Card({ w: 320 });
document.body.appendChild(card.generate());

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License

MIT © 2026 Hoai Nam