libyear/src/fetch/package-manager.js

A simple measure of software dependency freshness

import * as path from "node:path";
import { satisfies } from "semver";
import { execute } from "./execute.js";
export const getParsedPackageManager = (packageManager) => {
    switch (packageManager) {
        case "berry":
        case "npm":
        case "pnpm":
        case "yarn":
            return packageManager;
        default:
            return "npm";
    }
};
export const getInferredPackageManager = async () => {
    const packageManager = path.basename(process.env.npm_execpath || "npm");
    if (packageManager.startsWith("yarn")) {
        return satisfies(await execute("yarn --version"), "^0 || ^1")
            ? "yarn"
            : "berry";
    }
    else if (packageManager.startsWith("pnpm")) {
        return Promise.resolve("pnpm");
    }
    else {
        return Promise.resolve(getParsedPackageManager(packageManager));
    }
};