@chialab/esbuild-plugin-html

Esbuild Plugin HTML • A HTML loader plugin for esbuild.

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How it works

Esbuild Plugin HTML instructs esbuild to load a HTML file as entrypoint. It parses the HTML and runs esbuild on scripts, styles, assets and icons.

Scripts

It handles both inline and file scripts. When the type="module" attribute is found in the <script> tag, it runs esbuild with format: 'esm', otherwise it will produce an iife bundle.

Sample

<script src="src/index.js" type="module"></script>
<script src="src/index.js" nomodule></script>

This will result in producing two bundles:

<script src="esm/index-[hash].js" type="module"></script>
<script src="iife/index-[hash].js" nomodule></script>

Styles

It supports both <link rel="stylesheet"> and <style> nodes for styling.

Sample

<link rel="stylesheet" href="app.css" />
<style>
    .inline {
        color: red;
    }
</style>

This will result in producing two css bundles:

<link rel="stylesheet" href="css/app-[hash].css" />
<style>@import url('css/inline-[hash].css');</style>

Assets

Referenced files by src and href attributes are copy along the html file in the assets directory.

Sample

<img src="img/logo.png" />

This will result in:

<img src="assets/logo-[hash].png" />

Icons

Manually generate favicons can be a pain. This plugin detects a <link rel="icon"> node and uses its reference to generate icons and launch screens for (almost) every browser.

Sample

<link rel="shortcut icon" href="icon.png" type="image/png">

This will result in:

<link rel="icon" sizes="16x16" href="icons/favicon-16x16.png">
<link rel="icon" sizes="32x32" href="icons/favicon-32x32.png">
<link rel="icon" sizes="48x48" href="icons/favicon-48x48.png">
<link rel="shortcut icon" href="icons/favicon-196x196.png">
<link rel="icon" sizes="196x196" href="icons/favicon-196x196.png">
<link rel="apple-touch-icon" sizes="180x180" href="icons/apple-touch-icon.png">
<link rel="apple-touch-icon" sizes="167x167" href="icons/apple-touch-icon-ipad.png">
<link rel="apple-touch-startup-image" media="(device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3)" href="icons/apple-launch-iphonex.png">
<link rel="apple-touch-startup-image" media="(device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2)" href="icons/apple-launch-iphone8.png">
<link rel="apple-touch-startup-image" media="(device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3)" href="icons/apple-launch-iphone8-plus.png">
<link rel="apple-touch-startup-image" media="(device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2)" href="icons/apple-launch-iphone5.png">
<link rel="apple-touch-startup-image" media="(device-width: 768px) and (device-height: 1024px) and (-webkit-device-pixel-ratio: 2)" href="icons/apple-launch-ipadair.png">
<link rel="apple-touch-startup-image" media="(device-width: 834px) and (device-height: 1112px) and (-webkit-device-pixel-ratio: 2)" href="icons/apple-launch-ipadpro10.png">
<link rel="apple-touch-startup-image" media="(device-width: 1024px) and (device-height: 1366px) and (-webkit-device-pixel-ratio: 2)" href="icons/apple-launch-ipadpro12.png">

It also update <link rel="manifest"> content if found.

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Install

$ npm i @chialab/esbuild-plugin-html -D
$ yarn add @chialab/esbuild-plugin-html -D

Usage

import esbuild from 'esbuild';
import htmlPlugin from '@chialab/esbuild-plugin-html';

await esbuild.build({
    plugins: [
        htmlPlugin({
            // scriptsTarget: 'es6',
            // modulesTarget: 'es2020',
        }),
    ],
});

Options

The HTML plugin accepts an options object with the following properties:

scriptsTarget

The target of the plain scripts build (type="text/javascript").

modulesTarget

The target of the ES modules build (type="module").

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License

Esbuild Plugin HTML is released under the MIT license.