shift73k/assets_old/node_modules/webpack-cli/lib/utils/get-package-manager.js

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const fs = require('fs');
const path = require('path');
const { sync } = require('execa');
const utils = require('./index');
/**
*
* Returns the name of package manager to use,
* preference order - npm > yarn > pnpm
*
* @returns {String} - The package manager name
*/
function getPackageManager() {
const hasLocalNpm = fs.existsSync(path.resolve(process.cwd(), 'package-lock.json'));
if (hasLocalNpm) {
return 'npm';
}
const hasLocalYarn = fs.existsSync(path.resolve(process.cwd(), 'yarn.lock'));
if (hasLocalYarn) {
return 'yarn';
}
const hasLocalPnpm = fs.existsSync(path.resolve(process.cwd(), 'pnpm-lock.yaml'));
if (hasLocalPnpm) {
return 'pnpm';
}
try {
// the sync function below will fail if npm is not installed,
// an error will be thrown
if (sync('npm', ['--version'])) {
return 'npm';
}
} catch (e) {
// Nothing
}
try {
// the sync function below will fail if yarn is not installed,
// an error will be thrown
if (sync('yarn', ['--version'])) {
return 'yarn';
}
} catch (e) {
// Nothing
}
try {
// the sync function below will fail if pnpm is not installed,
// an error will be thrown
if (sync('pnpm', ['--version'])) {
return 'pnpm';
}
} catch (e) {
utils.logger.error('No package manager found.');
process.exit(2);
}
}
module.exports = getPackageManager;