Registry / devops / babel-plugin-show-source

babel-plugin-show-source

library0.2.1jsnpmunverified

A Babel plugin that transforms functions to include their source code via Function.prototype.toString() for runtime introspection. Current stable version is 0.2.1 (pre-1.0.0, still experimental). The release cadence is low; last update was 2023. It is a niche tool intended for debugging, serialization, or educational demos where preserving function text is needed. Note the pre-release versioning and possible breaking changes in minor versions.

devops testing

npm install babel-plugin-show-source

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-SHOW-

babel-plugin-show-source

devopsjavascriptv0.2.1

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 showSource from 'babel-plugin-show-source'

✗ const showSource = require('babel-plugin-show-source');

Plugin is ESM-first; if using CommonJS, use dynamic import or ensure your environment supports require of ESM.

Shows how to add the plugin to Babel config and demonstrates the transformation: after building, greet.toString() will return the original source code instead of '[Function]'.

// babel.config.js module.exports = { plugins: [ 'babel-plugin-show-source', // or with options: // ['babel-plugin-show-source', { /* options */ }] ] }; // Input file (source.js) function greet(name) { return `Hello, ${name}!`; } console.log(greet.toString()); // After transformation, greet.toString() returns the full source code // Output: 'function greet(name) { return `Hello, ${name}!`; }'

Debug

Known issues

gotchaPlugin may break if Babel options like 'compact' or 'retainLines' are used.

fix

Avoid using conflicting options; test with your Babel configuration.

affects: >=0.0.0

breakingVersion 0.2.0 changed the output format; source string may differ in whitespace from original.

fix

Check updated output, adjust any string comparisons if needed.

affects: >=0.2.0

deprecatedThe 'show-source' option in Babel config is deprecated in favor of direct plugin usage.

fix

Use 'plugins' array directly instead of 'env' or 'overrides' options.

affects: >=0.1.5

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-show-source'

Missing dependency; not installed in node_modules.

fix

Run `npm install --save-dev babel-plugin-show-source` or `yarn add -D babel-plugin-show-source`.

TypeError: plugin is not a function

Incorrect import; attempting to use default import as a function.

fix

Use `import showSource from 'babel-plugin-show-source'` in ESM or ensure proper default import resolution in CommonJS.

Upgrade

Version history

0.2.1latest on npm

Audit

Dependencies

@babel/corerequiredRequired peer dependency; plugin runs in Babel pipeline.

Agent activity

17 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/nouvist/babel-plugin-show-source ↗

packagehttps://www.npmjs.com/package/babel-plugin-show-source ↗