canirequire › CommonJS › @istanbuljs/schema
Is @istanbuljs/schema ESM-only? Can you require() it?
Schemas describing various structures used by nyc and istanbuljs
Last verified Sep 9, 2026 against @istanbuljs/schema@0.1.6. JSON
CommonJS CommonJS — require() works on every Node.js version
@istanbuljs/schema ships CommonJS only. require("@istanbuljs/schema") works everywhere. import "@istanbuljs/schema" 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 @istanbuljs/schema@0.1.6 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("@istanbuljs/schema") from a CommonJS file and import "@istanbuljs/schema" from an ES module.
| Runtime | require("@istanbuljs/schema") | import "@istanbuljs/schema" |
|---|---|---|
| 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 @istanbuljs/schema
ES modules (import)
import schema from "@istanbuljs/schema";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 schema = require("@istanbuljs/schema");Module format by version
Derived from the type, main and exports fields of every stable release on npm (6 versions; the newest 6 shown).
| Versions | Format | First published |
|---|---|---|
| 0.1.0 – 0.1.6 | CommonJS | Oct 5, 2019 |
Frequently asked
Is @istanbuljs/schema ESM-only?
@istanbuljs/schema@0.1.6 is a CommonJS package. @istanbuljs/schema ships CommonJS only. require("@istanbuljs/schema") works everywhere. import "@istanbuljs/schema" 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 @istanbuljs/schema with ES module syntax?
Yes. import schema from "@istanbuljs/schema" 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 @istanbuljs/schema work in Bun?
Yes. import "@istanbuljs/schema" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does @istanbuljs/schema ship TypeScript types?
No. @istanbuljs/schema ships no type declarations and there is no @types package for it.
Links
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