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@aggre/ullr
Advanced tools
Functional Web Components
Building Web Components with Functional Programming.
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Add to a lit project:
npm i @aggre/ullr
When creating a new project using lit as template and RxJS as the state management:
npm i @aggre/ullr lit rxjs
Partially supports run on Node.js (with jsdom).
shadow
shadow
is a lit directive.
Encapsulate the template with Shadow DOM.
import { html } from 'lit'
import { shadow } from '@aggre/ullr'
export const main = (title: string, desc: string) =>
shadow(html`
<style>
h1 {
color: blue;
}
</style>
<main>
<h1>${title}</h1>
<p>${desc}</p>
</main>
`)
Browser | Node.js |
---|---|
✅ | 🚸 Shadow Dom isn't supported. An inside content of Shadow Dom is shown as just an innerHTML. |
subscribe
subscribe
is a lit directive.
Subscribe to Observable<T>
of RxJS and re-rendering with the passed callback function.
When the directive part is removed or the passed observable is changed, the unused subscription will automatically unsubscribe
.
import { html } from 'lit'
import { subscribe } from '@aggre/ullr'
import { timer as _timer } from 'rxjs'
export const timer = (initialDelay: number, period: number) =>
subscribe(
_timer(initialDelay, period),
(x) => html` <p>${x}</p> `,
html` <p>Default content</p> `,
)
Browser | Node.js |
---|---|
✅ | ✅ |
createCustomElements
createCustomElements
creates a class that can be passed to customElements.define
.
import { createCustomElements } from '@aggre/ullr'
import { main } from './main'
const observedAttributes = ['title', 'desc']
const template = ([title, desc]) => main(title, desc)
window.customElements.define(
'x-app',
createCustomElements(template, observedAttributes),
)
Browser | Node.js |
---|---|
✅ | ❌ |
FAQs
Functional Web Components
The npm package @aggre/ullr receives a total of 1,904 weekly downloads. As such, @aggre/ullr popularity was classified as popular.
We found that @aggre/ullr 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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