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jsx-for-web-components

v1.2.1

Published

[![Build Status](https://travis-ci.com/slogsdon/jsx-for-web-components.svg?branch=master)](https://travis-ci.com/slogsdon/jsx-for-web-components)

Downloads

463

Readme

jsx-for-web-components

Build Status

WIP: A basic JSX factory for use in projects leveraging web components

Features

Requirements

  • Compiler that can convert JSX to JSX factory JavaScript calls

Installation

yarn add jsx-for-web-components

Getting Started

We'll use TypeScript and Rollup to build for the browser. Let's start with pulling in some dependencies:

yarn add --dev typescript rollup rollup-plugin-node-resolve rollup-plugin-typescript2

A couple configuration files to help the project build correctly:

./tsconfig.json

{
  "compilerOptions": {
    "jsx": "react",
    "jsxFactory": "h",
    "moduleResolution": "node",
    "target": "es2015"
  }
}

./rollup.config.js

import resolve from "rollup-plugin-node-resolve";
import typescript from "rollup-plugin-typescript2";

export default {
  input: "./src/index.tsx",
  output: {
    file: "./dist/index.js",
    format: "iife",
  },
  plugins: [
    resolve({
      extensions: [ '.js', '.ts', '.tsx' ],
    }),
    typescript({
      typescript: require("typescript"),
    }),
  ],
};

Define your custom element:

./src/index.tsx

import { h, JSXCustomElement } from "jsx-for-web-components";

class ExampleElement extends JSXCustomElement {
  static elementName = "example-element";

  public render() {
    return <div id="testing">hello</div>;
  }
}

ExampleElement.register();

Leverage your custom element:

./index.html

<!DOCTYPE html>
<script src="/dist/index.js" defer></script>
<example-element></example-element>

After building the project with rollup -c rollup.config.js, you should be able to load your HTML in a browser to see your work.

Notes

connectedCallback

While there is some setup performed within the constructor of JSXCustomElement, the DOM nodes defined by your render method are not attached until the connectedCallback method is called. If you need to leverage this callback within your code, be sure to call the super method, e.g.:

class ExampleElement extends JSXCustomElement {
  // ...
  public connectedCallback() {
    super.connectedCallback();

    // your code
  }
}

License

This project is licensed under the MIT License. See LICENSE for details.