# lezer-promql

**Repository Path**: mirrors_prometheus/lezer-promql

## Basic Information

- **Project Name**: lezer-promql
- **Description**: A lezer-based PromQL grammar
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-11-04
- **Last Updated**: 2026-03-29

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# lezer-promql

[![CircleCI](https://circleci.com/gh/prometheus/lezer-promql.svg?style=shield)](https://circleci.com/gh/prometheus/lezer-promql) [![NPM version](https://img.shields.io/npm/v/lezer-promql.svg)](https://www.npmjs.org/package/lezer-promql)

## Status

This package is deprecated. It has been fully migrated to the repository prometheus/prometheus, and it is published
under the npm organization `@prometheus-io`.

See the corresponding [readme](https://github.com/prometheus/prometheus/blob/main/web/ui/module/lezer-promql/README.md)
for further information.

## Overview

This is a PromQL grammar for the [lezer](https://lezer.codemirror.net/) parser system. It is inspired by the initial
grammar coming from [Prometheus](https://github.com/prometheus/prometheus/blob/main/promql/parser/generated_parser.y)
written in yacc.

This library is stable but doesn't provide any guideline of how to use it as it has been integrated
into [codemirror-promql](https://github.com/prometheus/codemirror-promql). If you want to use this library, you perhaps
want to actually use **codemirror-promql** instead.

**Note**: This library is following the changes of the upstream grammar (i.e. coming from Prometheus) as closed as
possible

## Installation

This package is available as a npm package:

```bash
npm install --save lezer-promql
```

**Note**: you will have to manually install the dependency `lezer` as it is a peer dependency to this package.

```bash
npm install --save lezer
```

## Development

### Building

    npm i
    npm run build

### Testing

    npm run test

## License

The code is licensed under an [Apache 2.0](./LICENSE) license.