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Is @angular/language-service ESM-only? Can you require() it?

Angular - language services

Last verified Sep 9, 2026 against @angular/language-service@22.1.5. JSON

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

@angular/language-service ships CommonJS only. require("@angular/language-service") works everywhere. import "@angular/language-service" 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
22.1.5 (Sep 3, 2026)
Module format
CommonJS
Last CommonJS version
22.1.5
TypeScript types
Bundled
Node engines
^22.22.3 || ^24.15.0 || >=26.0.0
Weekly downloads
1.3M
License
MIT

Does @angular/language-service@22.1.5 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("@angular/language-service") from a CommonJS file and import "@angular/language-service" from an ES module.

Runtimerequire("@angular/language-service")import "@angular/language-service"
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 @angular/language-service

ES modules (import)

import languageService from "@angular/language-service";

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 languageService = require("@angular/language-service");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (561 versions; the newest 60 shown).

VersionsFormatFirst published
20.3.26 – 22.1.5CommonJSJul 8, 2026

Frequently asked

Is @angular/language-service ESM-only?

@angular/language-service@22.1.5 is a CommonJS package. @angular/language-service ships CommonJS only. require("@angular/language-service") works everywhere. import "@angular/language-service" 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 @angular/language-service with ES module syntax?

Yes. import languageService from "@angular/language-service" 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 @angular/language-service work in Bun?

Yes. import "@angular/language-service" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does @angular/language-service ship TypeScript types?

Yes. @angular/language-service bundles its own type declarations; no @types package is needed.

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