lit-element-transpiler

LitElement code transpiler (import css and scss file and inline to your component also transpile decorators to native javascript)

Getting Started

git clone https://github.com/aelbore/lit-element-transpiler.git
npm install

Installation

  npm install --save-dev lit-element-transpiler

Usage

• Code

    import * as mockfs from 'mock-fs'
    import * as fs from 'fs'
  
    import { transform } from 'lit-element-transpiler'
  
    mockfs({
      './src/hello-world.ts': `
        import { LitElement, html, customElement, property } from 'lit-element'
        import './hello-world.css'
  
        @customElement('hello-world')
        class HelloWorld extends LitElement { 
            
          @property() message
  
        } 
      `
      './src/hello-world.css':`
        h1 {
          color: red
        }
      `
    })
  
    const content = await fs.promises.readFile('./src/hello-world.ts', 'utf-8')
    const { code, map } = await transform('./src/hello-world.ts', content)

• Output

    import { LitElement, css } from 'lit-element'
  
    class HelloWorld extends LitElement { 
      static get properties() {
        return {
          message: { type: String }
        }
      }
  
      static get styles() {
        return css `
          h1 { color: red }
        `
      }
    } 
  
    customElements.define('hello-world', HelloWorld)