canirequire › CommonJS › joi
Is joi ESM-only? Can you require() it?
Object schema validation
Last verified Sep 9, 2026 against joi@18.2.8. JSON
CommonJS CommonJS — require() works on every Node.js version
joi ships CommonJS only. require("joi") works everywhere. import "joi" 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 joi@18.2.8 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("joi") from a CommonJS file and import "joi" from an ES module.
| Runtime | require("joi") | import "joi" |
|---|---|---|
| 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 joi
ES modules (import)
import joi from "joi";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 joi = require("joi");Module format by version
Derived from the type, main and exports fields of every stable release on npm (246 versions; the newest 60 shown).
| Versions | Format | First published |
|---|---|---|
| 14.1.1 – 18.2.8 | CommonJS | Nov 24, 2018 |
Frequently asked
Is joi ESM-only?
joi@18.2.8 is a CommonJS package. joi ships CommonJS only. require("joi") works everywhere. import "joi" 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 joi with ES module syntax?
Yes. import joi from "joi" 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 joi work in Bun?
Yes. import "joi" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does joi ship TypeScript types?
Yes. joi bundles its own type declarations; no @types package is needed.
Links
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