libyear/src/package-manager.js

A simple measure of software dependency freshness

import * as path from "node:path";
import { execaCommand } from "execa";
import { default as semver } from "semver";
const { satisfies } = semver;
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")) {
        const { stdout } = await execaCommand("yarn --version");
        return satisfies(stdout, "^0 || ^1") ? "yarn" : "berry";
    }
    else if (packageManager.startsWith("pnpm")) {
        return Promise.resolve("pnpm");
    }
    else {
        return Promise.resolve(getParsedPackageManager(packageManager));
    }
};