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Is ts-node-dev ESM-only? Can you require() it?

Compiles your TS app and restarts when files are modified.

Last verified Sep 9, 2026 against ts-node-dev@2.0.0. Markdown · JSON

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

ts-node-dev ships CommonJS only. require("ts-node-dev") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8.0. import "ts-node-dev" 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.

What to do

  1. require("ts-node-dev") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8.0.
  2. From ES modules use the default import: import tsNodeDev from "ts-node-dev"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: no types are available for ts-node-dev; declare the module yourself if you need them.
Latest
2.0.0 (May 26, 2022)
Module format
CommonJS
Last CommonJS version
2.0.0
TypeScript types
None
Node engines
>=0.8.0
Weekly downloads
2.1M
License
MIT

Does ts-node-dev@2.0.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("ts-node-dev") from a CommonJS file and import "ts-node-dev" from an ES module.

Runtimerequire("ts-node-dev")import "ts-node-dev"
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 1.4.0✓ works✓ works

How to import ts-node-dev

ES modules (import)

import tsNodeDev from "ts-node-dev";

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 tsNodeDev = require("ts-node-dev");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (11 versions; the newest 11 shown).

VersionsFormatFirst published
1.0.0 – 2.0.0CommonJSOct 17, 2020

Frequently asked

Is ts-node-dev ESM-only?

ts-node-dev@2.0.0 is a CommonJS package. ts-node-dev ships CommonJS only. require("ts-node-dev") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8.0. import "ts-node-dev" 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 ts-node-dev with ES module syntax?

Yes. import tsNodeDev from "ts-node-dev" 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 ts-node-dev work in Bun?

Yes. import "ts-node-dev" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does ts-node-dev ship TypeScript types?

No. ts-node-dev ships no type declarations and there is no @types package for it.

Links

Other commonjs packages

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