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Is tap-spec ESM-only? Can you require() it?

Formatted TAP output like Mocha's spec reporter

Last verified Sep 9, 2026 against tap-spec@5.0.0. JSON

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

tap-spec ships CommonJS only. require("tap-spec") works everywhere. import "tap-spec" 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
5.0.0 (Jun 5, 2018)
Module format
CommonJS
Last CommonJS version
5.0.0
TypeScript types
None
Node engines
not declared
Weekly downloads
36K
License
MIT

Does tap-spec@5.0.0 actually load? Runtime test results

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

Runtimerequire("tap-spec")import "tap-spec"
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 tap-spec

ES modules (import)

import tapSpec from "tap-spec";

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 tapSpec = require("tap-spec");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (29 versions; the newest 29 shown).

VersionsFormatFirst published
0.0.1 – 5.0.0CommonJSJan 2, 2014

Frequently asked

Is tap-spec ESM-only?

tap-spec@5.0.0 is a CommonJS package. tap-spec ships CommonJS only. require("tap-spec") works everywhere. import "tap-spec" 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 tap-spec with ES module syntax?

Yes. import tapSpec from "tap-spec" 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 tap-spec work in Bun?

Yes. import "tap-spec" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does tap-spec ship TypeScript types?

No. tap-spec ships no type declarations and there is no @types package for it.

Links

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