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Is strip-final-newline ESM-only? Can you require() it?

Strip the final newline character from a string or Uint8Array

Last verified Sep 9, 2026 against strip-final-newline@4.0.0. Markdown · JSON

ESM-only ESM-only since 3.0.0 — last CommonJS version is 2.0.0

strip-final-newline dropped its CommonJS build in 3.0.0 (May 2021). The last version with a plain require()-able CommonJS entry is 2.0.0, published Oct 28, 2018; it declares support for Node.js >=6.

On Node.js 20.19+, 22.12+ and newer, require("strip-final-newline") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. On Node.js 18, which has no require(esm), require("strip-final-newline") fails with ERR_REQUIRE_ESM.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("strip-final-newline") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
  2. From a CommonJS file, use a dynamic import inside an async function: const stripFinalNewline = await import("strip-final-newline"). That works on every Node.js version the package supports (>=18).
  3. If you need a synchronous require() or run Node.js 18: npm install strip-final-newline@2.0.0, the last CommonJS release (published Oct 28, 2018); it declares Node.js >=6.
  4. TypeScript: types are bundled; install nothing extra.
Latest
4.0.0 (Dec 13, 2023)
Module format
ESM-only
Last CommonJS version
2.0.0
ESM-only since
3.0.0 (May 3, 2021)
TypeScript types
Bundled
Node engines
>=18
Weekly downloads
114.3M
License
MIT

Does strip-final-newline@4.0.0 actually load? Runtime test results

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

Runtimerequire("strip-final-newline")import "strip-final-newline"
Node.js 18✗ failsERR_REQUIRE_ESM✓ 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 strip-final-newline

ES modules (import)

import * as stripFinalNewline from "strip-final-newline";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

// Node.js 20.19+, 22.12+ and newer (verified):
const stripFinalNewline = require("strip-final-newline");

// Any Node.js version the package supports (>=18), from an async function:
async function main() {
  const stripFinalNewline = await import("strip-final-newline");
}

// Or pin the last CommonJS release (declares Node.js >=6):
// npm install strip-final-newline@2.0.0

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 (3 versions; the newest 3 shown).

VersionsFormatFirst published
3.0.0 – 4.0.0ESM-onlyMay 3, 2021
2.0.0CommonJSOct 28, 2018

Frequently asked

Is strip-final-newline ESM-only?

strip-final-newline@4.0.0 is ESM-only. strip-final-newline dropped its CommonJS build in 3.0.0 (May 2021). The last version with a plain require()-able CommonJS entry is 2.0.0, published Oct 28, 2018; it declares support for Node.js >=6.

Which version of strip-final-newline still supports CommonJS / require()?

2.0.0 is the last version of strip-final-newline with a CommonJS build; it declares Node.js >=6. Install it with "npm install strip-final-newline@2.0.0". Every version from 3.0.0 on is ESM-only.

How do I use strip-final-newline from a CommonJS file?

From a CommonJS file, use a dynamic import inside an async function: const stripFinalNewline = await import("strip-final-newline"). That works on every Node.js version the package supports (>=18). On Node.js 20.19+, 22.12+ and newer, require("strip-final-newline") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin strip-final-newline@2.0.0 (declares Node.js >=6).

Does strip-final-newline work in Bun?

Yes. import "strip-final-newline" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does strip-final-newline ship TypeScript types?

Yes. strip-final-newline bundles its own type declarations; no @types package is needed.

Links

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