canirequire › CommonJS › side-channel-map
Is side-channel-map ESM-only? Can you require() it?
Store information about any JS value in a side channel, using a Map
Last verified Sep 9, 2026 against side-channel-map@1.0.1. JSON
CommonJS CommonJS — require() works on every Node.js version
side-channel-map ships CommonJS only. require("side-channel-map") works everywhere. import "side-channel-map" 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.
Does side-channel-map@1.0.1 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("side-channel-map") from a CommonJS file and import "side-channel-map" from an ES module.
| Runtime | require("side-channel-map") | import "side-channel-map" |
|---|---|---|
| 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 side-channel-map
ES modules (import)
import sideChannelMap from "side-channel-map";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 sideChannelMap = require("side-channel-map");Module format by version
Derived from the type, main and exports fields of every stable release on npm (2 versions; the newest 2 shown).
| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.0.1 | CommonJS | Dec 10, 2024 |
Frequently asked
Is side-channel-map ESM-only?
side-channel-map@1.0.1 is a CommonJS package. side-channel-map ships CommonJS only. require("side-channel-map") works everywhere. import "side-channel-map" 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 side-channel-map with ES module syntax?
Yes. import sideChannelMap from "side-channel-map" 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 side-channel-map work in Bun?
Yes. import "side-channel-map" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does side-channel-map ship TypeScript types?
Yes. side-channel-map bundles its own type declarations; no @types package is needed.
Links
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