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@vastblast/node-minify

v2.1.3

Published

Native bindings for the [tdewolff/minify](https://github.com/tdewolff/minify) Go minifier powered by [koffi](https://github.com/Koromix/koffi). Minification runs in-process against a Go-built shared library, so you get the Go implementation's speed withou

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@vastblast/node-minify

Native bindings for the tdewolff/minify Go minifier powered by koffi. Minification runs in-process against a Go-built shared library, so you get the Go implementation's speed without shelling out to a CLI.

Features

  • Go-powered minifier loaded through koffi; no child processes.
  • Promise-based minify(data, options) API that returns the minified string.
  • Supports CSS, HTML, JS, JSON, SVG, XML, and import maps with the same tuning flags as the Go minifier.
  • Cross-compile the Go shared library with GOOS/GOARCH or point to a custom build via NODE_MINIFY_LIB_PATH.

Installation

npm install @vastblast/node-minify

The install step builds a small Go shared library for your host platform. Ensure Go is available in PATH (or set GOOS/GOARCH to cross-compile). You can also point to a prebuilt library by setting NODE_MINIFY_LIB_PATH.

Shipping/using prebuilts

  • Run GOOS=<target> GOARCH=<target> npm run build:go (or npm run build:go -- --goos <target> --goarch <target>) to emit build/<goos>-<goarch>/nodeminify.<ext>.
  • Keep build/ in your npm package so installs on those platforms can reuse the prebuilt.
  • postinstall skips building when a matching prebuilt exists. Set NODE_MINIFY_FORCE_BUILD=1/NODE_MINIFY_SKIP_BUILD=1 (or pass --force-build/--skip-build) to override; use NODE_MINIFY_DEBUG_BUILD=1 or --debug-build to keep symbols for native debugging.
  • CI workflow .github/workflows/prebuilds.yml builds prebuilts per platform and publishes when publish=true on workflow_dispatch. Publishing expects the package to be set up as an npm trusted publisher (OIDC/id-token) or for an automation token to be provided via NODE_AUTH_TOKEN.

Usage

import { minify } from '@vastblast/node-minify';

const html = `
<!doctype html>
<html>
  <head><title>Demo</title></head>
  <body><h1>Hello, world!</h1></body>
</html>`;

const minified = await minify(html, {
  type: 'text/html',
  htmlKeepComments: false,
  htmlKeepWhitespace: false,
});

console.log(minified);
const js = await minify('const sum = (a, b) => a + b;', {
  type: 'application/javascript',
  jsPrecision: 3,
});

minify returns a Promise<string> and rejects with an Error if the input or options are invalid.

API

minify(data: string, options: MinifyOptions): Promise<string>

  • data: the string to minify (required).
  • options.type: media type (required).
  • Remaining MinifyOptions map directly to tdewolff/minify flags.

Supported media types:

'text/css', 'text/html', 'image/svg+xml', 'application/javascript', 'application/json', 'application/rss+xml', 'application/manifest+json', 'application/xhtml-xml', 'text/xml', 'importmap'

Common options (all optional unless noted):

  • cssPrecision: decimal precision for CSS numbers.
  • htmlKeepComments, htmlKeepDefaultAttrvals, htmlKeepDocumentTags, htmlKeepEndTags, htmlKeepQuotes, htmlKeepSpecialComments, htmlKeepWhitespace: control how much HTML is preserved.
  • jsKeepVarNames, jsPrecision, jsVersion: adjust JS minification.
  • jsonKeepNumbers, jsonPrecision: JSON minification tuning.
  • svgKeepComments, svgPrecision: SVG-specific controls.
  • xmlKeepWhitespace: preserve XML whitespace.
  • url: base URL used by the underlying minifier.

Native bindings and performance

The package loads a Go-built shared library via koffi. All work happens inside that library (no spawned processes), keeping throughput close to the original Go project and avoiding CLI overhead.

Credits

Powered by tdewolff/minify.

License

MIT