Registry / testing / eslint-plugin-es-x

eslint-plugin-es-x

library9.6.0jsnpmunverified

ESLint plugin that disallows individual ECMAScript syntactic features from ES3 to upcoming proposals. Version 9.6.0 requires ESLint >=9.29.0 and Node.js ^20.19.0 || >=22.12.0. Actively maintained by eslint-community as a fork of the deprecated eslint-plugin-es. Provides 128+ granular rules to restrict specific syntax (e.g., BigInt, optional chaining, top-level await) with readable error messages. Ships TypeScript type declarations, flat config support, and predefined configs like 'no-new-in-es2023'. Unlike setting ecmaVersion in Espree, this plugin allows selective feature bans and gives clear feedback for restricted syntax.

testing

npm install eslint-plugin-es-x

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-PLUGIN-ES-X

eslint-plugin-es-x

testingjavascriptv9.6.0

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.

plugin

✓ import plugin from 'eslint-plugin-es-x'

✗ const plugin = require('eslint-plugin-es-x')

Plugin is ESM-only since v9.0.0; CommonJS require() throws ERR_REQUIRE_ESM.

configs

✓ import { configs } from 'eslint-plugin-es-x'

Named export for configs like configs['no-new-in-es2023'].

rules

✓ import { rules } from 'eslint-plugin-es-x'

✗ import { noBigInt } from 'eslint-plugin-es-x'

Individual rules are not exported; access via rules object, e.g., rules['es-x/no-bigint'].

Sets up eslint-plugin-es-x with flat config in an ESM project, forbidding BigInt and optional chaining.

import plugin from 'eslint-plugin-es-x'; export default [ { plugins: { 'es-x': plugin }, rules: { 'es-x/no-bigint': 'error', 'es-x/no-optional-chaining': 'error' } } ];

Debug

Known issues

breakingv9.0.0 drops support for ESLint <9.29.0 and Node.js <20.19.0.

fix

Upgrade ESLint to >=9.29.0 and Node.js to ^20.19.0 || >=22.12.0.

affects: >=8.0.0 <9.0.0

breakingv9.0.0 changes 'no-new-in-es2020' and 'restrict-to-es3' through 'restrict-to-es2019' configs – rules may be added or removed.

fix

Review updated configs and adjust rule overrides.

affects: >=8.0.0 <9.0.0

deprecatedLegacy .eslintrc configs are deprecated; use flat config (eslint.config.js) for ESLint >=9.

fix

Migrate to flat config format.

affects: >=9.0.0

gotchaPlugin rules are prefixed with 'es-x/', not 'esx/' or 'es2015/'.

fix

Use rule names like 'es-x/no-arrow-functions'.

affects: >=1.0.0

gotchaConfig names are under 'configs' export, not directly on plugin – e.g., plugin.configs['no-new-in-es2023'].

fix

Access configs via plugin.configs object.

affects: >=9.0.0

Errors

Common errors & fixes

Cannot find module 'eslint-plugin-es-x'

Package not installed or wrong import path.

fix

Run: npm install eslint-plugin-es-x --save-dev

Error [ERR_REQUIRE_ESM]: require() of ES Module

Using CommonJS require() with ESM-only package.

fix

Change to import statement: import plugin from 'eslint-plugin-es-x'

ESLint couldn't find the plugin 'es-x'

Flat config not configured correctly.

fix

Add to plugins object: import plugin from 'eslint-plugin-es-x'; export default [{ plugins: { 'es-x': plugin } }]

Definition for rule 'es-x/no-bigint' was not found

Typo in rule name or missing plugin registration.

fix

Ensure rule name is 'es-x/no-bigint' (not 'no-bigint') and plugin is registered.

Upgrade

Version history

9.6.0latest on npm

Audit

Dependencies

eslintrequiredPeer dependency: plugin requires ESLint >=9.29.0 (flat config only).

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/eslint-community/eslint-plugin-es-x ↗

packagehttps://www.npmjs.com/package/eslint-plugin-es-x ↗