{
        name: 'signature',
        enforce: 'pre',
        resolveId: {
          order: 'pre',
          async handler(id, imp) {
            if (id === './counter.js') {
              console.log('turning counter into a chunk');
              const result = await this.resolve(id, imp, { skipSelf: true });
              if (result) {
                this.emitFile({
                  id: result.id,
                  type: 'chunk',
                  preserveSignature: 'allow-extension',
                });
              }
              return result;
            }
          },
        },
      }