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Is source-map-support ESM-only? Can you require() it?

Fixes stack traces for files with source maps

Last verified Sep 9, 2026 against source-map-support@0.5.21. JSON

CommonJS CommonJS — require() works on every Node.js version

source-map-support ships CommonJS only. require("source-map-support") works everywhere. import "source-map-support" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Latest
0.5.21 (Nov 19, 2021)
Module format
CommonJS
Last CommonJS version
0.5.21
TypeScript types
@types/source-map-support
Node engines
not declared
Weekly downloads
95.0M
License
MIT

Does source-map-support@0.5.21 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("source-map-support") from a CommonJS file and import "source-map-support" from an ES module.

Runtimerequire("source-map-support")import "source-map-support"
Node.js 18✓ works✓ works
Node.js 20✓ works✓ works
Node.js 22✓ works✓ works
Node.js 24✓ works✓ works
Node.js 26✓ works✓ works
Bun 1.4✓ works✓ works

How to import source-map-support

ES modules (import)

import sourceMapSupport from "source-map-support";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const sourceMapSupport = require("source-map-support");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (66 versions; the newest 60 shown).

VersionsFormatFirst published
0.1.6 – 0.5.21CommonJSJun 11, 2013

Frequently asked

Is source-map-support ESM-only?

source-map-support@0.5.21 is a CommonJS package. source-map-support ships CommonJS only. require("source-map-support") works everywhere. import "source-map-support" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import source-map-support with ES module syntax?

Yes. import sourceMapSupport from "source-map-support" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does source-map-support work in Bun?

Yes. import "source-map-support" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does source-map-support ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/source-map-support".

Links

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