# Is Esm

> Use this skill when the user wants to check if a package is an es module.

- Skill: `javimosch/is-esm` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/is-esm`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/is-esm/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/is-esm

---


# Is-esm Plugin

Check if a package is an ES module.

## Commands

### Operations
- `is-esm package check` — check package via is-esm

## Usage Examples
- "is-esm --help"
- "is-esm <args>"

## Installation

```bash
npm install -g is-esm
```

## Examples

```bash
is-esm --version
is-esm --help
```

## Key Features
- esm\n- javascript\n- module-check