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canirequire › Dual (CommonJS + ESM) › @jridgewell/sourcemap-codec

Is @jridgewell/sourcemap-codec ESM-only? Can you require() it?

Encode/decode sourcemap mappings

Last verified Sep 9, 2026 against @jridgewell/sourcemap-codec@1.6.0. JSON

Dual (CommonJS + ESM) Dual package — both require() and import work

@jridgewell/sourcemap-codec publishes both a CommonJS entry and a native ESM entry (ESM added in 1.4.9). require("@jridgewell/sourcemap-codec") and import "@jridgewell/sourcemap-codec" both work on every supported Node.js version and in Bun.

Latest
1.6.0 (Aug 28, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
1.6.0
Native ESM since
1.4.9
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
191.3M
License
MIT

Does @jridgewell/sourcemap-codec@1.6.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("@jridgewell/sourcemap-codec") from a CommonJS file and import "@jridgewell/sourcemap-codec" from an ES module.

Runtimerequire("@jridgewell/sourcemap-codec")import "@jridgewell/sourcemap-codec"
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 @jridgewell/sourcemap-codec

ES modules (import)

import sourcemapCodec from "@jridgewell/sourcemap-codec";

CommonJS (require)

const sourcemapCodec = require("@jridgewell/sourcemap-codec");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (14 versions; the newest 14 shown).

VersionsFormatFirst published
1.4.9 – 1.6.0Dual (CommonJS + ESM)Feb 5, 2022

Frequently asked

Is @jridgewell/sourcemap-codec ESM-only?

@jridgewell/sourcemap-codec@1.6.0 ships CommonJS and ESM builds. @jridgewell/sourcemap-codec publishes both a CommonJS entry and a native ESM entry (ESM added in 1.4.9). require("@jridgewell/sourcemap-codec") and import "@jridgewell/sourcemap-codec" both work on every supported Node.js version and in Bun.

Can I require @jridgewell/sourcemap-codec?

Yes. @jridgewell/sourcemap-codec ships a CommonJS entry, so require("@jridgewell/sourcemap-codec") works on every Node.js version, alongside the native ESM entry for import.

Does @jridgewell/sourcemap-codec work in Bun?

Yes. import "@jridgewell/sourcemap-codec" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does @jridgewell/sourcemap-codec ship TypeScript types?

Yes. @jridgewell/sourcemap-codec bundles its own type declarations; no @types package is needed.

Links

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