Tiny library for tiny web apps (Currently heavily developed. Not recommended for production environments)
Lucia is currently only installable through a CDN and also supports UMD. Put this within your <head> tags in html.
<!-- development version, includes helpful console warnings -->
<script src="https://unpkg.com/lucia/dist/lucia.js"></script>
<!-- production version, optimized for size and speed -->
<script src="https://unpkg.com/lucia"></script>
Below is an example of a clicker game in Lucia.
<div id="app">
<button *on:click="increment()" *html="count"></button>
</div>
const ClickerGame = {
count: localStorage.count || 0,
increment() {
localStorage.count = ++this.count;
},
};
Lucia.createApp(ClickerGame).mount('#app');
At the core of Lucia is a system that enables us to declaratively render data to the DOM using the straightforward *html directive:
<div id="app">
<p *html="message"></p>
<p *html="message === 'Hello World!'"></p>
</div>
Lucia.createApp({
message: 'Hello World!',
}).mount('#app');
It’s easy to toggle the presence of an element, too:
<div id="app">
<button *if="!show">You can't see me</button>
<button *if="show">You can see me</button>
</div>
Lucia.createApp({
show: true,
}).mount('#app');
To let users interact with your app, we can use the *on directive to attach event listeners that invoke methods on our Lucia instances:
<div id="app">
<button *on:click="announce()" *html="message"></button>
</div>
Lucia.createApp({
message: 'Hello world!',
announce() {
alert(this.message);
},
}).mount('#app');
In addition to text interpolation, we can also bind element attributes using the *bind directive:
<div id="app">
<h1 *bind:class="{ hello: show }">Classes are cool</h1>
<h1 *bind:style="color">Styles are sassy</h1>
</div>
Lucia.createApp({
show: true,
// You can also reference data vs inputing an object in the directive itself
color: { color: 'purple' },
}).mount('#app');
We can also use the *join directive to render a list of items based on an array. Note that performance will be affected if using array mutators.
<div id="app">
<p *join="fruits by , "></p>
</div>
Lucia.createApp({
fruits: ['apple', 'orange', 'banana'],
}).mount('#app');
You can use the *model directive to create two-way data bindings on form input, textarea, and select elements.
<div id="app">
<input *model="message" />
<p *html="message"></p>
</div>
Lucia.createApp({
message: 'Nothing submitted yet',
}).mount('#app');
Lucia is MIT licensed.
FAQs
A simple and flexible authentication library
The npm package lucia receives a total of 22,359 weekly downloads. As such, lucia popularity was classified as popular.
We found that lucia demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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