recma-minify

recma plugin to minify code.

Contents

• What is this?
• When should I use this?
• Install
• Use
• API
  • unified().use(recmaMinify[, options])
  • Options
• Types
• Compatibility
• Security
• Contribute
• License

What is this?

This package is a unified (recma) that minifies code with Terser.

When should I use this?

You can use this if you want to make code smaller.

You can alternatively use terser manually if you don’t use recma.

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install recma-minify

In Deno with esm.sh:

import recmaMinify from 'https://esm.sh/recma-minify@1'

In browsers with esm.sh:

<script type="module">
  import recmaMinify from 'https://esm.sh/recma-minify@1?bundle'
</script>

Use

Say we have the following module example.js:

import recmaMinify from 'recma-minify'
import recmaParse from 'recma-parse'
import recmaStringify from 'recma-stringify'
import {unified} from 'unified'

const file = await unified()
  .use(recmaParse, {module: true})
  .use(recmaMinify, {
    compress: true,
    ecma: 2020,
    mangle: true,
    toplevel: true
  })
  .use(recmaStringify)
  .process(
    'console.log(sum(2, 3)); function sum(left, right) { return left + right }'
  )

console.log(String(file))

…running that with node example.js yields:

console.log(2 + 3);

API

This package exports no identifiers. The default export is recmaMinify.

unified().use(recmaMinify[, options])

Plugin to minify code.

Parameters

• options (Options, optional) — configuration

Returns

Transform (Transformer).

Options

Configuration (TypeScript type).

Same as MinifyOptions from terser except that you do not need to pass format, module, output, parse, or sourceMap; you should probably pass compress: true, ecma: 2020, mangle: true, and toplevel: true.

Types

This package is fully typed with TypeScript. It exports the additional type Options.

Compatibility

Projects maintained by the unified collective are compatible with maintained versions of Node.js.

When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, recma-minify@1, compatible with Node.js 16.

Security

As recma works on JS and evaluating JS is unsafe, use of recma can also be unsafe. Do not evaluate unsafe code.

Contribute

See § Contribute on our site for ways to get started. See § Support for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © Titus Wormer