# @csstools/custom-function-parser

> Parse CSS custom function params.

Latest version **1.0.0** (published 2026-10-01) · MIT license · 0 weekly downloads

## Install

```sh
npm install @csstools/custom-function-parser
pnpm add @csstools/custom-function-parser
yarn add @csstools/custom-function-parser
bun add @csstools/custom-function-parser
```

## Health

**Score 60/100 (C)** — status: active.

Positive: esm support; no vulnerabilities; recently updated; high maintenance score.

Warnings: low downloads; no types.

## Facts

| | |
|---|---|
| Version | 1.0.0 |
| Published | 2026-10-01 |
| First published | 2026-10-01 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | ESM |
| Node | >=20.19.0 |
| Dependencies | 0 |
| Unpacked size | 11.3 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 1059 |
| Maintainers | jonathantneal, alaguna, romainmenke |
| Keywords | css, custom-functions, parser |

## Links

- npm: https://www.npmjs.com/package/@csstools/custom-function-parser
- Repository: https://github.com/csstools/postcss-plugins
- Homepage: https://github.com/csstools/postcss-plugins/tree/main/packages/custom-function-parser#readme
- Issues: https://github.com/csstools/postcss-plugins/issues
- Funding: https://github.com/sponsors/csstools
- npm.io page: https://npm.io/package/@csstools/custom-function-parser

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## Recent versions

- 1.0.0 (latest) — 2026-10-01

## README

# Custom Function Parser <img src="https://cssdb.org/images/css.svg" alt="for CSS" width="90" height="90" align="right">

[<img alt="npm version" src="https://img.shields.io/npm/v/@csstools/custom-function-parser.svg" height="20">][npm-url]
[<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/actions/workflows/test.yml/badge.svg?branch=main" height="20">][cli-url]
[<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]

Implemented from : https://www.w3.org/TR/mediaqueries-5/

## Usage

Add [Custom Function Parser] to your project:

```bash
npm install @csstools/custom-function-parser @csstools/css-parser-algorithms @csstools/css-tokenizer --save-dev
```

[Custom Function Parser] depends on our CSS tokenizer and parser algorithms.
It must be used together with `@csstools/css-tokenizer` and `@csstools/css-parser-algorithms`.

```ts
// TODO
```

[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
[discord]: https://discord.gg/bUadyRwkJS
[npm-url]: https://www.npmjs.com/package/@csstools/custom-function-parser

[Custom Function Parser]: https://github.com/csstools/postcss-plugins/tree/main/packages/custom-function-parser

---
_Source: https://npm.io/package/@csstools/custom-function-parser · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._