eslint-fix-utils

library0.4.2jsnpmunverified

A library of utilities for ESLint rule fixers and suggestions, providing functions to safely manipulate AST nodes (e.g., add/remove object properties, array elements) while handling commas and formatting. Current stable version is 0.4.2. Released under MIT, actively maintained. Key differentiator: offers both higher-level fixer helpers (fixAddObjectProperty, fixRemoveArrayElement) and full APIs (addObjectProperty, removeArrayElement) for custom fix logic. Requires ESLint >=8 and @types/estree >=1. ESM-only since v0.4.0.

testing

npm install eslint-fix-utils

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-FIX-UTILS

eslint-fix-utils

testingjavascriptv0.4.2

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.

addObjectProperty

✓ import { addObjectProperty } from 'eslint-fix-utils'

✗ const { addObjectProperty } = require('eslint-fix-utils')

ESM-only since v0.4.0. Named export, not default.

removeArrayElement

✓ import { removeArrayElement } from 'eslint-fix-utils'

✗ import removeArrayElement from 'eslint-fix-utils'

Must use named import, not default.

fixRemoveObjectProperty

✓ import { fixRemoveObjectProperty } from 'eslint-fix-utils'

Curried fixer versions are also named exports.

Shows how to use addObjectProperty in an ESLint rule to add a property to an object expression. Demonstrates named imports and the fix function pattern.

import { addObjectProperty, removeArrayElement } from 'eslint-fix-utils'; export default { create(context) { return { ObjectExpression(node) { context.report({ node, messageId: 'addProperty', fix: (fixer) => { return addObjectProperty(context, fixer, node, 'type', 'module'); }, }); }, }; }, };

Debug

Known issues

breakingv0.4.0 drops support for Node 18 and switches to ESM-only with bundled exports.

fix

Update Node to ^20.19.0 || ^22.12.0 || >=24.0.0. Use native ESM or a bundler that handles ESM.

affects: >=0.4.0

breakingv0.3.0 removed support for Node 18.

fix

Upgrade Node to >=20 or stick with v0.2.x.

affects: >=0.3.0

deprecatedAll 'fix' prefixed functions are wrappers; consider using the full API variants directly for more control.

fix

Use addObjectProperty, removeArrayElement, etc., instead of fixAddObjectProperty if you need custom fix logic.

affects: >=0.4.0

Errors

Common errors & fixes

ERR_REQUIRE_ESM: require() of ES Module /path/to/eslint-fix-utils/index.js from /path/to/your-file.js not supported.

Package is ESM-only since v0.4.0, but required with require().

fix

Switch to import syntax or use dynamic import().

TypeError: fixer is not a function

When using the full API functions, the fixer argument must be provided as a separate parameter.

fix

Ensure you call the function with the correct signature: addObjectProperty(context, fixer, node, key, value).

Cannot find module '@types/estree' or its corresponding type declarations.

@types/estree is a peer dependency and not installed automatically.

fix

Run npm install --save-dev @types/estree or add it to your devDependencies.

Upgrade

Version history

0.4.2latest on npm

Audit

Dependencies

@types/estreerequiredTypeScript types for ESTree AST nodes used in all functions.

eslintrequiredCore peer dependency for ESLint rule context and fixer APIs.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/michaelfaith/eslint-fix-utils ↗

packagehttps://www.npmjs.com/package/eslint-fix-utils ↗