@skarab/detect-package-manager/lib/version.js

Detects which package manager (bun, pnpm, yarn, npm) is used based on the current working directory.

import { execAsync } from './process.js';
export const validVersionPattern = /^\d+\.\d+\.\d+$/;
/**
 * Returns the version number for a given command name.
 *
 * @example
 * ```
 * const pnpmVersion = await getCommandVersion('pnpm');
 * // -> '7.6.0'
 * ```
 *
 * @param commandName command name such as 'pnpm'.
 * @throws {Error} if the version is not valid or the command does not exist.
 */
export async function getCommandVersion(commandName) {
    const childProcess = await execAsync(`${commandName} --version`);
    const version = childProcess.stdout.trim().replace(/^v/i, '');
    if (!validVersionPattern.test(version)) {
        throw new Error(`Unknown command version from "${commandName} --version".`);
    }
    return version;
}
/**
 * Returns the version number for a given command name or undefined if the version is not valid or the command does not exist.
 *
 * @see {@link getCommandVersion}
 *
 * @param commandName command name such as 'pnpm'.
 */
export async function tryGetCommandVersion(commandName) {
    try {
        return await getCommandVersion(commandName);
    }
    catch (_a) {
        return undefined;
    }
}