cogent

library1.9jsnpmunverified

Cogent is a simple HTTP request library built for Node.js and generators using co. It supports redirect resolution, timeout, automatic gunzip decompression, and first-class JSON parsing. The response can be buffered, saved to a file, or returned as parsed JSON. Options include retries, timeouts, and customizable request properties. Version 1.0.1 is stable but the package is part of the cojs ecosystem and has seen no recent updates. It relies on generators and the co library, making it less suitable for modern async/await workflows without additional wrapping.

http-networking web-framework

npm install cogent

github ↗package ↗

INSTALL

IMPORT

SIG · COGENT

cogent

http-networkingjavascriptv1.9

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.

request

✓ import request from 'cogent'

Default import; the module exports a generator function directly.

request

✓ const request = require('cogent')

✗ const { request } = require('cogent')

CommonJS requires the default export, not a named property.

extend

✓ import { extend } from 'cogent'

✗ import extend from 'cogent/extend'

Named export for creating a new instance with default options.

Demonstrates fetching a JSON endpoint using a generator function, parsing JSON response, and logging the body.

const co = require('co'); const request = require('cogent'); co(function* () { const res = yield* request('https://api.github.com/repos/visionmedia/express/package.json', { json: true }); console.log(res.body); }).catch(err => console.error(err));

Debug

Known issues

deprecatedGenerator-based APIs are outdated; prefer async/await with modern HTTP libraries like node-fetch or axios.

fix

Use async/await with a library that returns promises (e.g., node-fetch).

affects: >=1.0.0

gotchaWhen using 'cogent' without co, the generator must be yielded manually.

fix

Wrap with co: const wrapped = co(require('cogent'));

affects: >=1.0.0

gotchaThe 'json' option only populates res.body on a 200 status code; non-200 responses will not have a parsed body.

fix

Check res.statusCode before accessing res.body.

affects: >=1.0.0

Errors

Common errors & fixes

TypeError: request(...) is not a function

Attempting to call the generator without using yield* or co.

fix

Use yield* request(uri) inside a generator, or wrap with co.

ReferenceError: yield is not defined

Using yield outside of a generator function.

fix

Ensure the containing function is a generator (function*).

Upgrade

Version history

1.9latest on npm

Audit

Dependencies

corequiredRequired for generator-based async control flow; cogent itself returns a generator function.

Agent activity

22 hits · last 30 days

node

Amazon

OpenAI (training)

Resources

githubhttps://github.com/cojs/cogent ↗

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