Installation

@cosyte/astm is a TypeScript package for Node.js with no runtime dependencies. It ships ESM and CommonJS builds, each with its own type declarations, so it works from either module system without configuration.

Status: published on npm, and the public API is settled and stable: the exported names, options, return shapes, and warning codes are the surface a release keeps, and a breaking change bumps the minor version with its migration in the changelog. Two surfaces are still moving, both additively: the built-in profile registry and the warning and error code sets.

Prerequisites

• Node.js 22 or later. CI tests it on Node.js 22, 24 and 26.
• A package manager: npm, pnpm or yarn.

Install

npm install @cosyte/astm

Check the install

Import the package and print its version:

import { VERSION } from "@cosyte/astm";

console.log(VERSION);
typeof VERSION; // => "string"

The same import works from CommonJS:

const { VERSION } = require("@cosyte/astm");

console.log(VERSION);

If either prints a version string, the install is good. Go on to the Quickstart.