Registry / testing / babel-helper-plugin-test-runner

babel-helper-plugin-test-runner

library6.24.1jsnpmunverified

Internal Babel helper for running plugin tests. Version 6.24.1 is an older release from Babel 6 era. This package is part of Babel's monorepo and is not intended for direct external use. It provides a test runner helper for Babel plugins. The current stable major version is 7.x (e.g., 7.29.2) with Babel 8 (8.0.0-rc.3) in release candidate. Key differentiator: purely internal to Babel, not designed for public consumption, may have breaking changes across major versions. Use @babel/helper-plugin-test-runner for Babel 7+.

testing

npm install babel-helper-plugin-test-runner

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-HELPER-PLUGI

babel-helper-plugin-test-runner

testingjavascriptv6.24.1

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 testRunner from 'babel-helper-plugin-test-runner'

✗ const testRunner = require('babel-helper-plugin-test-runner')

CommonJS require works for v6 but discouraged; Babel 7+ uses @babel/helper-plugin-test-runner

default

✓ import testRunner from '@babel/helper-plugin-test-runner'

✗ const testRunner = require('@babel/helper-plugin-test-runner')

For Babel 7+, package renamed to @babel/helper-plugin-test-runner

default

✓ const testRunner = require('@babel/helper-plugin-test-runner')

CJS is still valid for Babel 7+ but ESM preferred

Example of using babel-helper-plugin-test-runner to test a Babel plugin with a code fixture.

import pluginTester from 'babel-helper-plugin-test-runner'; import myPlugin from './my-plugin'; const runTest = pluginTester(myPlugin); const result = runTest({ code: 'const x = 1;', snapshot: true }); console.log(result);

Debug

Known issues

breakingRenamed from babel-helper-plugin-test-runner to @babel/helper-plugin-test-runner in Babel 7. Old package may not receive updates.

fix

Update to @babel/helper-plugin-test-runner for Babel 7+

affects: <7.0.0

deprecatedThe package is internal to Babel and may break without notice across minor versions.

fix

Consider using @babel/core's built-in test utilities or a dedicated test framework like Jest with babel-jest.

affects: >=6.0.0

gotchaCommonJS require() works in v6 but is not the recommended import style; prefer ESM for consistency with modern Babel.

fix

Use import statement or upgrade to Babel 7+ with @babel/helper-plugin-test-runner

affects: 6.x

gotchaThe function exported may have changed signature between Babel 6 and 7; check documentation for your version.

fix

Refer to version-specific docs on GitHub

affects: >=6.0.0

Errors

Common errors & fixes

Cannot find module 'babel-helper-plugin-test-runner'

Package not installed or mistake in package name (should be @babel/helper-plugin-test-runner for Babel 7+).

fix

npm install --save-dev @babel/helper-plugin-test-runner or install the older babel-helper-plugin-test-runner for Babel 6

TypeError: pluginTester is not a function

Incorrect import; the default export is a function, but maybe using named import.

fix

Use import pluginTester from 'babel-helper-plugin-test-runner'

babel-helper-plugin-test-runner is not compatible with @babel/core 7+

Using old package name with new Babel core.

fix

Switch to @babel/helper-plugin-test-runner

Upgrade

Version history

6.24.1latest on npm

Audit

Dependencies

@babel/corerequiredRequired for Babel transformations in tests

Agent activity

16 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/babel/babel ↗

packagehttps://www.npmjs.com/package/babel-helper-plugin-test-runner ↗