Registry / web-framework / launch-editor-middleware

launch-editor-middleware

library2.13.2jsnpmunverified

Express middleware that opens files in the user's default editor when requested via a URL. Version 2.13.2 is current; it is part of the launch-editor ecosystem by Evan You. It relies on launch-editor to resolve the editor and is typically used in development tooling like Vue CLI or Vite to open source files directly from the browser console. No active development fork, but stable and widely used. Differentiator: simple integration with Express, zero-config editor detection.

web-framework

npm install launch-editor-middleware

github ↗package ↗

INSTALL

IMPORT

SIG · LAUNCH-EDITOR-MIDD

launch-editor-middleware

web-frameworkjavascriptv2.13.2

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

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

default

✓ import launchEditorMiddleware from 'launch-editor-middleware'

✗ const launchEditorMiddleware = require('launch-editor-middleware')

ESM default export; CJS via require works with default export

launchEditorMiddleware

✓ const { launchEditorMiddleware } = require('launch-editor-middleware')

✗ const launchEditorMiddleware = require('launch-editor-middleware').default

CJS named export also available; prefer ESM when possible

Shows how to mount the middleware on an Express app to open files via /__open-in-editor?file=path.

import express from 'express'; import launchEditorMiddleware from 'launch-editor-middleware'; const app = express(); app.use('/__open-in-editor', launchEditorMiddleware()); app.listen(3000, () => console.log('Server running on port 3000'));

Debug

Known issues

breakingIn version 2.x, the middleware signature changed from `app.use('/__open-in-editor', launchEditorMiddleware)` to `app.use('/__open-in-editor', launchEditorMiddleware())`.

fix

Call the function: `app.use('/__open-in-editor', launchEditorMiddleware())`.

affects: >=2.0.0 <2.0.0

gotchaThe middleware only works in development environments; production builds should not include it.

fix

Conditionally apply the middleware only when `NODE_ENV` is not `'production'`.

affects: all

deprecatedThe `default` import is the same as the named import; both are valid.

fix

Use either import style consistently.

affects: all

Errors

Common errors & fixes

Cannot find module 'launch-editor-middleware'

Package not installed.

fix

Run `npm install launch-editor-middleware --save-dev`.

TypeError: launchEditorMiddleware is not a function

Missing function call parentheses.

fix

Change `app.use('/__open-in-editor', launchEditorMiddleware)` to `app.use('/__open-in-editor', launchEditorMiddleware())`.

Upgrade

Version history

2.13.2latest on npm

Audit

Dependencies

launch-editorrequiredcore dependency for editor detection and launching

expressrequiredpeer dependency; requires Express app instance

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/yyx990803/launch-editor ↗

packagehttps://www.npmjs.com/package/launch-editor-middleware ↗