Registry / testing / eslint-config-problems

eslint-config-problems

library10.0.1jsnpmunverified

An ESLint shareable config that focuses on catching actual code problems without enforcing code style, designed for seamless use with Prettier. Current stable version is 10.0.1, released in 2025. This package is actively maintained and follows ESLint major versions: v8, v9, and now v10. It includes rules like no-unassigned-vars, preserve-caught-error, no-promise-executor-return, and others that prevent runtime errors, disallow bad practices (eval, with, new Number), and encourage shorter code. It is style-agnostic, meaning it does not include any stylistic rules, making it ideal for teams using Prettier. Alternatives like eslint-config-standard or eslint-config-airbnb include style rules that may conflict with Prettier. The config is ESM-only since v9 and exports a flat config object for ESLint v9+.

testing

npm install eslint-config-problems

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-CONFIG-PROB

eslint-config-problems

testingjavascriptv10.0.1

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.

problems (default)

✓ import problems from 'eslint-config-problems'

✗ const problems = require('eslint-config-problems')

Since v9, the package is ESM-only and exports a default flat config object. CommonJS require will fail in ESLint v9+.

problems (default) in eslint.config.js

✓ export default [ problems, { rules: {...} } ];

✗ module.exports = problems

ESLint v9+ expects an array of flat config objects. Using module.exports or exporting a single object without array will cause errors.

problems (default) in .eslintrc (deprecated)

✓ import problems from 'eslint-config-problems'; export default [ problems ];

✗ // .eslintrc.json: { "extends": "problems" }

The old .eslintrc format with "extends" is not supported for this package in v9+. Must use flat config.

Installs eslint and the config, then sets up a flat config importing the problems config and adding a custom rule.

npm install -D eslint eslint-config-problems // eslint.config.js import problems from 'eslint-config-problems'; export default [ problems, { rules: { 'no-console': 'warn', }, }, ];

Debug

Known issues

breakingESLint v10 compatibility: eslint-config-problems v10 requires eslint ^10.0.0. Using with eslint v9 will fail.

fix

Upgrade to eslint v10, or use eslint-config-problems v8.0.0 for eslint v8 or v9.

affects: >=10.0.0

breakingFlat config required: v9+ of this package only supports ESLint flat config (eslint.config.js). The old .eslintrc files are not supported.

fix

Migrate to eslint.config.js using flat config format. See the quickstart for an example.

affects: >=9.0.0

breakingESM-only: v9+ of this package is ESM-only and cannot be used with require(). Attempting require will throw a ModuleNotFoundError.

fix

Use import statement in an ESM context (e.g., "type": "module" in package.json or .mjs extension).

affects: >=9.0.0

gotchaNo stylistic rules: This config intentionally omits all formatting rules. Ensure you use Prettier separately for formatting.

fix

Run prettier after eslint fixes, or integrate via eslint-plugin-prettier if desired (not included).

affects: >=1.0.0

Errors

Common errors & fixes

Error [ERR_REQUIRE_ESM]: require() of ES Module /path/to/node_modules/eslint-config-problems/index.js not supported.

Using require() to load an ESM-only package.

fix

Switch to import statement or set type: module in package.json.

Configuration for rule "no-unused-vars" is invalid: Value "warn" is not a valid severity.

Incorrect severity value (should be 'off', 'warn', or 'error').

fix

Use 'warn' (string) or 1 (number) as severity.

ESLint couldn't find the config "problems" after extending.

Using old .eslintrc format with "extends": "problems".

fix

Use flat config and import the default export.

Upgrade

Version history

10.0.1latest on npm

Audit

Dependencies

eslintrequiredpeer dependency; the config requires ESLint to function

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/ryanzim/eslint-config-problems ↗

packagehttps://www.npmjs.com/package/eslint-config-problems ↗