Registry / babel-plugin-transform-export-default-name

babel-plugin-transform-export-default-name

library2.1.0jsnpmunverified

Babel plugin that transforms export default of anonymous functions, arrow functions, and anonymous classes to named exports using the filename as the variable name. Version 2.1.0 is current. Released sporadically; last update was several years ago. Key differentiator: solves stack trace readability by assigning a derived name from the file (e.g., foo-bar.js becomes fooBar), improving debugging. Unlike other plugins that only handle function declarations, this targets anonymous/arrow function and class expressions. Works with Babel 6 and 7 (likely).

npm install babel-plugin-transform-export-default-name

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-export-default-name

javascriptv2.1.0

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 (default)

✓ module.exports = { plugins: ['transform-export-default-name'] }

✗ module.exports = { plugins: ['babel-plugin-transform-export-default-name'] }

When using .babelrc, just use the short name without prefix

plugin (programmatic API)

✓ require('babel-plugin-transform-export-default-name')

✗ require('babel-plugin-transform-export-default-name').default

This is a traditional CJS module, no default export

ESM import

✓ import plugin from 'babel-plugin-transform-export-default-name'

✗ import { plugin } from 'babel-plugin-transform-export-default-name'

The package does not ship ESM; named import will fail

Shows how to enable the plugin and the transformation of an anonymous arrow function default export to a named variable.

// .babelrc { "plugins": ["transform-export-default-name"] } // foo.js // Input: export default () => {}; // Output: let foo = () => {}; export default foo;

Debug

Known issues

breakingPlugin may conflict with other Babel plugins that also transform export default (e.g., @babel/plugin-proposal-export-default-from). Order matters: run this plugin before others that re-export.

fix

Ensure this plugin is listed before any plugin that handles export-all or re-exporting.

affects: >=2.0.0

deprecatedPackage has not been updated in years; may not support Babel 7 clearify. It is not officially maintained.

fix

Consider using @babel/plugin-proposal-export-default-from or monkey-patch Babel transform output for named functions.

affects: >=2.0.0

gotchaUses lodash.camelCase; filenames with unusual characters may produce unexpected variable names (e.g., numbers, underscores).

fix

Check transformed output for valid identifiers; avoid file names starting with digits or containing special chars.

affects: >=1.0.0

gotchaOnly transforms anonymous functions and arrow functions; named exports or non-function/class default exports remain unchanged.

fix

Use only for anonymous default exports; for named exports, use other tools.

affects: >=1.0.0

gotchaDoes not transform export default of anonymous class if the class is named in the same file (e.g., export default class Foo {} -> stays as Foo). Only unnamed classes are affected.

fix

Ensure the default export is truly anonymous; otherwise, no transformation occurs.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-transform-export-default-name'

Plugin not installed or missing from node_modules.

fix

npm install --save-dev babel-plugin-transform-export-default-name

Error: Plugin/Preset files are not allowed to export objects, only functions.

Using a very old Babel version that expects different plugin format (Babel 6 vs 7).

fix

Install @babel/core@^7.0.0 and ensure compatibility; consider alternative plugin.

TypeError: Cannot assign to read only property 'name' of function

Plugin incorrectly tries to assign name to a function that is already named; edge case with named default exports.

fix

Ensure the default export is anonymous; remove any explicit name declaration.

Unexpected token, expected "export" (e.g., after transformation, syntax error)

Plugin corrupts export due to misordered plugins or conflicting transforms.

fix

Ensure this plugin runs first in the plugin list before other export transforms.

Upgrade

Version history

2.1.0latest on npm

Audit

Dependencies

@babel/corerequiredpeerDependency required to function as a Babel plugin

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/gajus/babel-plugin-transform-export-default-name ↗

packagehttps://www.npmjs.com/package/babel-plugin-transform-export-default-name ↗