minify-literals

minify-literals

Minify HTML & CSS markup inside JavaScript/TypeScript template literal strings.

Uses html-minifier-terser to minify HTML and clean-css to minify CSS.

Installation

$ npm i minify-literals
# or
$ yarn add minify-literals
# or
$ pnpm add minify-literals

Usage

TypeScript

import { minifyHTMLLiterals } from "minify-literals"; const source = ` const el = html\`<div > <h1> Hello World </h1 > </div>\`; const css = css\` .foo { color: red; } \`; `; let { code, map } = await minifyHTMLLiterals(source); // or with options: await minifyHTMLLiterals(source, { fileName: "test.js" }); console.log(code); // const el = html`<div><h1>Hello World</h1></div>`; // const css = css`.foo{color:red}`; console.log(map); // SourceMap { // "file": ".map", // "mappings": "AAAA;AACA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC, [...] // "names": [], // "sources": [ // null, // ], // "sourcesContent": [ // null, // ], // "version": 3, // },

Options

export interface Options {
  /**
   * Minify HTML options, see https://github.com/terser/html-minifier-terser#options-quick-reference
   * @default .//src/defaultOptions.ts
   */
  minifyOptions?: Partial<minify.Options>;

  /**
   * Override the default strategy for how to minify HTML.
   * More info:
   *  https://github.com/explodingcamera/esm/blob/main/packages/minify-literals/lib/strategy.ts
   *
   * @optional
   */
  strategy: S;
}

Related Packages

• rollup-plugin-minify-template-literals - Rollup plugin for minifying HTML & CSS markup inside JavaScript/TypeScript template literal strings.

Credits

This package is based on minify-html-literals by Elizabeth Mitchell I've fixed a few bugs, ported it to ES modules, and refactored it a bit.

Some of the fixed bugs:

• https://github.com/asyncLiz/minify-html-literals/issues/37
• https://github.com/asyncLiz/minify-html-literals/issues/45
• https://github.com/asyncLiz/minify-html-literals/issues/46
• https://github.com/asyncLiz/minify-html-literals/issues/40