@customElement

Usage

import {customElement} from 'custom-element-decorator';

@customElement()
class MySuperCoolElement extends HTMLElement {}

// Now you can use <my-super-cool-element> anywhere in your app.

Important note: The name of your class may change if you use a minifier, that means <my-super-cool-element> in this example might be renamed to something else in the build. In most case it's fine and won't cause any trouble but if you want to force a name you should pass it as an argument:

@customElement({ name: 'my-super-cool-element' })
class MyElement extends HTMLElement {}

Injection

Sometimes you don't want to bother finding a special DOM location for your app's custom elements.
If you create the object programmatically into your code you can pass the inject argument to automatically inject the object into the DOM.

import {customElement} from 'custom-element-decorator';

@customElement({ inject: true })
class MyServiceElement extends HTMLElement {}

// This object is automatically inserted inside the DOM
// upon creation.
export const service = new MyServiceElement();

Installation

npm add -D custom-element-decorator

Bare version

import {customElement} from 'custom-element-decorator/bare';

@customElement
class MyElement extends HTMLElement {}

Special thanks

to Glenn for the hyphen idea.
to Duske for delegating this npm package name to me.