prepareOfflineInvoke() {
    this.skipCompile =
      _.get(this.serverless, 'service.custom.webpack.noBuild') === true || _.get(this.options, 'skip-build') === true;

    // Use service packaging for compile
    _.set(this.serverless, 'service.package.individually', false);

    return this.serverless.pluginManager.spawn('webpack:validate').then(() => {
      // Set offline location automatically if not set manually
      if (!this.options.location && !_.get(this.serverless, 'service.custom.serverless-offline.location')) {
        _.set(
          this.serverless,
          'service.custom.serverless-offline.location',
          path.relative(this.serverless.config.servicePath, path.join(this.webpackOutputPath, 'service'))
        );
      }
      return null;
    });
  }
Special settings for use with serverless-offline.