Registry / testing / eslint-ava-rule-tester

eslint-ava-rule-tester

library5.0.1jsnpmunverified

ESLint RuleTester runner for AVA test framework. Wraps ESLint's RuleTester to produce per-test reports in AVA format. Current stable version 5.0.1, pure ESM, requires Node.js >=18 and ESLint >=8.7.0. Supports all RuleTester features including valid/invalid cases, fix output, and error options. Releases: v5 breaking change to ESM-only; v4 dropped Node <7 and upgraded to ESLint v6; v2 added support for AVA 0.19. Key differentiator: provides granular test results instead of a single pass/fail for the entire rule suite.

testing

npm install eslint-ava-rule-tester

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-AVA-RULE-TE

eslint-ava-rule-tester

testingjavascriptv5.0.1

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.

default

✓ import AvaRuleTester from 'eslint-ava-rule-tester';

✗ const AvaRuleTester = require('eslint-ava-rule-tester');

ESM-only since v5; CommonJS require will fail. Use dynamic import or upgrade.

AvaRuleTester

✓ import AvaRuleTester from 'eslint-ava-rule-tester';

✗ import { AvaRuleTester } from 'eslint-ava-rule-tester';

Default export only; named import not available.

type inference

✓ import type AvaRuleTester from 'eslint-ava-rule-tester';

✗ import { type AvaRuleTester } from 'eslint-ava-rule-tester';

TypeScript users can use import type for type-only import.

Shows how to create an AvaRuleTester instance, passing the AVA test function and ESLint config, then run valid and invalid test cases.

import test from 'ava'; import AvaRuleTester from 'eslint-ava-rule-tester'; import myRule from '../eslint-rules/my-rule.js'; const ruleTester = new AvaRuleTester(test, { languageOptions: { ecmaVersion: 2024, }, }); ruleTester.run('my-rule', myRule, { valid: [ 'valid code', ], invalid: [ { code: 'invalid code', errors: [{ message: 'Error message' }], }, ], });

Debug

Known issues

breakingv5.0.0 is pure ESM and requires Node.js >=18. CommonJS require() will not work.

fix

Use import syntax and ensure Node.js version is >=18. If you must use CJS, upgrade to a dynamic import or pin to v4.x.

affects: >=5.0.0

breakingv4.0.0 dropped support for Node.js <7 and requires ESLint v6 as peer dependency.

fix

Upgrade Node.js to at least v8 and ESLint to v6 or higher.

affects: >=4.0.0 <5.0.0

breakingv2.0.1 requires AVA >=0.19 which enforces at least one assertion per test.

fix

Ensure AVA version is at least 0.19.0.

affects: >=2.0.1

breakingv5.0.0 changed the internal implementation to subclass RuleTester instead of modifying it. This may affect custom extensions.

fix

If you were relying on prototype modifications to RuleTester, adapt to use the provided subclass instead.

affects: >=5.0.0

Errors

Common errors & fixes

Error [ERR_REQUIRE_ESM]: require() of ES Module not supported.

Trying to use require() with ESM-only package (v5+).

fix

Switch to import or use dynamic import: const AvaRuleTester = await import('eslint-ava-rule-tester');

TypeError: Class extends value undefined is not a constructor or null

Missing or incompatible peer dependency, typically eslint is not installed or version is too low.

fix

Install eslint >=8.7.0 as a dev dependency.

Cannot find module 'eslint-ava-rule-tester'

Package not installed or not in node_modules.

fix

Run npm install --save-dev eslint-ava-rule-tester

Upgrade

Version history

5.0.1latest on npm

Audit

Dependencies

eslintrequiredpeer dependency; provides RuleTester class

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/jfmengels/eslint-ava-rule-tester ↗

packagehttps://www.npmjs.com/package/eslint-ava-rule-tester ↗