esmo

library4.8.0jsnpmunverified

esno is a Node.js runtime enhanced with esbuild for loading TypeScript and ESM files. It is an alias for tsx since v0.15, providing automated CJS/ESM mode and caching. Current stable version is 4.8.0. The project is in maintenance mode, with issues redirected to tsx. Key differentiators include zero-config TypeScript execution, esbuild-based transpilation for speed, and seamless CJS/ESM interop. It replaces older tools like ts-node.

devops web-framework

npm install esmo

github ↗package ↗

INSTALL

IMPORT

SIG · ESMO

esmo

devopsjavascriptv4.8.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default (CLI usage)

✓ npx esno index.ts

✗ npx esno index.js

esno is primarily a CLI tool; no programmatic API is exported.

install as dependency

✓ npm i esno

✗ npm i -g esno

Global install is for command-line use; local install is for scripting.

Shows zero-config TypeScript execution: a simple function with type annotation, run directly via esno CLI.

// First install: npm i -g esno // Create hello.ts export function greet(name: string): string { return `Hello, ${name}!`; } console.log(greet('World')); // Run with: // esno hello.ts

tsx --version

Debug

Known issues

deprecatedesno v0.15+ is now an alias of tsx; standalone esno is deprecated.

fix

Use tsx directly for new projects.

affects: >=0.15

breakingIncorrect import path for commonjs usage

fix

Use tsx's conditional exports; esno does not export programmatic API.

affects: >=3.0

Errors

Common errors & fixes

Cannot find module 'esno'

esno is only a CLI; no programmatic module exports.

fix

Use 'tsx' for programmatic usage or run via CLI with npx.

esno: command not found

esno not installed globally or locally.

fix

Run 'npx esno' or install globally: 'npm i -g esno'.

Upgrade

Version history

4.8.0latest on npm

Audit

Dependencies

tsxrequiredesno is an alias of tsx; all functionality depends on tsx.

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/esbuild-kit/esno ↗

packagehttps://www.npmjs.com/package/esmo ↗