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Is @angular/compiler-cli ESM-only? Can you require() it?

Angular - the compiler CLI for Node.js

Last verified Sep 9, 2026 against @angular/compiler-cli@22.1.5. JSON

ESM-only ESM-only since 13.0.0 — last CommonJS version is 12.2.17

@angular/compiler-cli dropped its CommonJS build in 13.0.0 (November 2021). The last version you can require() on every Node.js version, including 18 and older, is 12.2.17, published Nov 22, 2022.

require("@angular/compiler-cli") failed in our probe on Node.js 20+ as well. See the runtime matrix below for the exact error.

@angular/compiler-cli@22.1.5 declares engines "^22.22.3 || ^24.15.0 || >=26.0.0", so Node.js 18, 20 are outside its supported range regardless of module format.

Latest
22.1.5 (Sep 3, 2026)
Module format
ESM-only
Last CommonJS version
12.2.17
ESM-only since
13.0.0 (Nov 3, 2021)
TypeScript types
Bundled
Node engines
^22.22.3 || ^24.15.0 || >=26.0.0
License
MIT

Does @angular/compiler-cli@22.1.5 actually load? Runtime test results

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

Runtimerequire("@angular/compiler-cli")import "@angular/compiler-cli"
Node.js 18✗ failsERR_REQUIRE_ESM✗ failsERR_MODULE_NOT_FOUND
Node.js 20✗ failsERR_MODULE_NOT_FOUND✗ failsERR_MODULE_NOT_FOUND
Node.js 22✗ failsERR_MODULE_NOT_FOUND✗ failsERR_MODULE_NOT_FOUND
Node.js 24✗ failsERR_MODULE_NOT_FOUND✗ failsERR_MODULE_NOT_FOUND
Node.js 26✗ failsERR_MODULE_NOT_FOUND✗ failsERR_MODULE_NOT_FOUND
Bun 1.4✗ failserror: Cannot find package 'typescript' from '/Users/boat/Projects/top-seo/data/probe-work/@angular__compiler-cli/node_modules/@angular/compiler-cli/bundles/chunk-QD2CJJTK.js'✗ failserror: Cannot find package 'typescript' from '/Users/boat/Projects/top-seo/data/probe-work/@angular__compiler-cli/node_modules/@angular/compiler-cli/bundles/chunk-QD2CJJTK.js'

How to import @angular/compiler-cli

ES modules (import)

import compilerCli from "@angular/compiler-cli";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const compilerCli = require("@angular/compiler-cli");

// Any Node.js version:
const compilerCli = await import("@angular/compiler-cli");

// Or pin the last CommonJS release:
// npm install @angular/compiler-cli@12.2.17

Module format by version

Derived from the type, main and exports fields of every stable release on npm (580 versions; the newest 60 shown).

VersionsFormatFirst published
20.3.26 – 22.1.5ESM-onlyJul 8, 2026

Frequently asked

Is @angular/compiler-cli ESM-only?

@angular/compiler-cli@22.1.5 is ESM-only. @angular/compiler-cli dropped its CommonJS build in 13.0.0 (November 2021). The last version you can require() on every Node.js version, including 18 and older, is 12.2.17, published Nov 22, 2022.

Which version of @angular/compiler-cli still supports CommonJS / require()?

12.2.17 is the last version of @angular/compiler-cli with a CommonJS build. Install it with "npm install @angular/compiler-cli@12.2.17". Every version from 13.0.0 on is ESM-only.

How do I use @angular/compiler-cli from a CommonJS file?

Use a dynamic import: const mod = await import("@angular/compiler-cli"). On Node.js 20.19+, 22.12+ and newer, a plain require("@angular/compiler-cli") also works for ESM packages that do not use top-level await. Alternatively pin @angular/compiler-cli@12.2.17.

Does @angular/compiler-cli work in Bun?

Importing @angular/compiler-cli failed in Bun 1.4 on Sep 9, 2026: error: Cannot find package 'typescript' from '/Users/boat/Projects/top-seo/data/probe-work/@angular__compiler-cli/node_modules/@angular/compiler-cli/bundles/chunk-QD2CJJTK.js'

Does @angular/compiler-cli ship TypeScript types?

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

Links

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