Method getDefaultVersion

sources/Engine.ts:170–202

(packageManager: SupportedPackageManagers)

  }

  async getDefaultVersion(packageManager: SupportedPackageManagers) {
    const definition = this.config.definitions[packageManager];
    if (typeof definition === `undefined`)
      throw new UsageError(`This package manager (${packageManager}) isn't supported by this corepack build`);

    const lastKnownGood = await getLastKnownGood();
    const lastKnownGoodForThisPackageManager = getLastKnownGoodFromFileContent(lastKnownGood, packageManager);
    if (lastKnownGoodForThisPackageManager) {
      debugUtils.log(`Search for default version: Found ${packageManager}@${lastKnownGoodForThisPackageManager} in LastKnownGood file`);
      return lastKnownGoodForThisPackageManager;
    }

    if (process.env.COREPACK_DEFAULT_TO_LATEST === `0`) {
      debugUtils.log(`Search for default version: As defined in environment, defaulting to internal config ${packageManager}@${definition.default}`);
      return definition.default;
    }

    const reference = await corepackUtils.fetchLatestStableVersion(definition.fetchLatestFrom);
    debugUtils.log(`Search for default version: found in remote registry ${packageManager}@${reference}`);

    try {
      await activatePackageManager(lastKnownGood, {
        name: packageManager,
        reference,
      });
    } catch {
      debugUtils.log(`Search for default version: could not activate registry version`);
      // If for some reason, we cannot update the last known good file, we
      // ignore the error.
    }

    return reference;
  }

  async activatePackageManager(locator: Locator) {
    const lastKnownGood = await getLastKnownGood();