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chai-connect-middleware

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library0.3.1jsnpmunverified

The `chai-connect-middleware` package provides helper functions specifically designed for testing Connect.js middleware using the Chai assertion library. Its sole stable version, 0.3.1, was published in January 2014. Given its last update was over a decade ago and it targets very old Node.js versions (specifically, `>= 0.4.0`), this library is no longer actively maintained, and future releases are not expected. This utility enables developers to wrap Connect middleware execution, allowing for precise control over the simulated `req` and `res` objects and handling the middleware's invocation of `next()` or `end()` for assertion purposes. While it offered a specialized approach to middleware testing, contemporary practices for testing Connect or Express middleware often leverage higher-level HTTP testing libraries like Supertest or `chai-http`, or directly unit test middleware functions. This makes `chai-connect-middleware` largely obsolete in modern JavaScript development workflows.

testing
npm install chai-connect-middleware
github ↗package ↗
INSTALL
IMPORT
SIG · CHAI-CONNECT-MIDDL
C
chai-connect-middleware
testingjavascriptv0.3.1
Install
—
Import
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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.

chai
✓ const chai = require('chai');
✗ import chai from 'chai';
This package, and its dependency 'chai' in the context of its release, are CommonJS-only. ESM imports will fail.
connectMiddlewarePlugin
✓ const connect = require('chai-connect-middleware');
✗ import connect from 'chai-connect-middleware';
The package is CommonJS-only. Direct ESM imports are not supported.
usePlugin
✓ chai.use(connect);
This is the standard way to register Chai plugins, making the `.connect` helper available.

This quickstart demonstrates how to use `chai-connect-middleware` with Mocha to test a simple Connect-style middleware, simulating a request and asserting on the response.

const chai = require('chai'); const connect = require('chai-connect-middleware'); const expect = chai.expect; chai.use(connect); // A dummy Connect/Express-style middleware for demonstration function dummyMiddleware(req, res, next) { if (req.query && req.query.hello) { res.body = `Hello, ${req.query.hello}`; res.statusCode = 200; res.end(); } else { next(); } } describe('middleware test', function() { let resResult; before(function(done) { chai.connect(dummyMiddleware) .req(function(req) { req.query = { hello: 'World' }; req.method = 'GET'; // Often needed for robust middleware testing req.url = '/'; }) .end(function(r) { resResult = r; done(); }) .dispatch(new Error('Middleware did not call next() or end()')); }); it('should send correct body', function() { expect(resResult.body).to.equal('Hello, World'); }); it('should have a 200 status code', function() { expect(resResult.statusCode).to.equal(200); }); });
Debug
Known issues
breakingThis package targets Node.js versions `>=0.4.0`, which are extremely outdated. It will likely not run on modern Node.js versions due to fundamental API changes and lack of maintenance.
fix
Consider using modern middleware testing libraries like `supertest` or `chai-http` which are actively maintained and compatible with current Node.js versions and testing paradigms.
affects: >=0.3.1
deprecatedThe package's last update was over 10 years ago, and its dependencies (Connect.js, older Chai versions) are also largely outdated or superseded. Modern testing patterns for HTTP middleware have evolved beyond this specific utility.
fix
Migrate to actively maintained libraries such as `supertest` for integration testing of HTTP endpoints, or directly unit test middleware functions using mocks for `req`, `res`, and `next`.
affects: >=0.3.1
gotchaThis package is CommonJS-only and does not support ES Modules (`import`/`export`) syntax directly. Attempting to use it in an ESM environment will result in module resolution errors.
fix
If you must use this package in a mixed environment, ensure it is `require()`d from a CommonJS context. For new projects, prefer ESM-compatible testing tools.
affects: >=0.3.1
gotchaSecurity vulnerabilities may exist in this unmaintained package or its transitive dependencies. As it hasn't received updates in over a decade, any discovered security flaws would remain unpatched.
fix
Avoid using unmaintained software in production-critical test suites. Regularly audit your dependency tree and prioritize active projects for testing infrastructure.
affects: >=0.3.1
Errors
Common errors & fixes
TypeError: require is not a function
Attempting to `import` this CommonJS-only package in an ES Module context.
fix
Ensure your test file uses CommonJS (`.js` files without `"type": "module"` in `package.json`, or explicitly using `require()`).
Error: Cannot find module 'chai-connect-middleware'
The package is not installed or not resolvable in the current environment.
fix
Run `npm install chai-connect-middleware` to install the package.
TypeError: chai.connect is not a function
The `chai-connect-middleware` plugin has not been registered with Chai via `chai.use(connect)`.
fix
Add `chai.use(connect);` after requiring both `chai` and `chai-connect-middleware`.
Upgrade
Version history
0.3.1latest on npm
Audit
Dependencies

No dependency data recorded yet.

Agent activity
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Resources
githubhttps://github.com/jaredhanson/chai-connect-middleware ↗
packagehttps://www.npmjs.com/package/chai-connect-middleware ↗
chai-connect-middleware — npm install chai-connect-middleware · libregistry