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Is ts-interface-checker ESM-only? Can you require() it?

Runtime library to validate data against TypeScript interfaces

Last verified Sep 9, 2026 against ts-interface-checker@1.0.2. JSON

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

ts-interface-checker ships CommonJS only. require("ts-interface-checker") works everywhere. import "ts-interface-checker" 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.

Latest
1.0.2 (Oct 11, 2021)
Module format
CommonJS
Last CommonJS version
1.0.2
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
31.5M
License
Apache-2.0

Does ts-interface-checker@1.0.2 actually load? Runtime test results

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

Runtimerequire("ts-interface-checker")import "ts-interface-checker"
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 ts-interface-checker

ES modules (import)

import tsInterfaceChecker from "ts-interface-checker";

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 tsInterfaceChecker = require("ts-interface-checker");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (19 versions; the newest 19 shown).

VersionsFormatFirst published
0.1.0 – 1.0.2CommonJSJan 11, 2018

Frequently asked

Is ts-interface-checker ESM-only?

ts-interface-checker@1.0.2 is a CommonJS package. ts-interface-checker ships CommonJS only. require("ts-interface-checker") works everywhere. import "ts-interface-checker" 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-interface-checker with ES module syntax?

Yes. import tsInterfaceChecker from "ts-interface-checker" 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-interface-checker work in Bun?

Yes. import "ts-interface-checker" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does ts-interface-checker ship TypeScript types?

Yes. ts-interface-checker bundles its own type declarations; no @types package is needed.

Links

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