app.js

router.get('/', add_site_form)
  .get('/auth/', auth)
  .get('/verify/:app_id', verify)
  .get('/webhooks/:shop_id', go_webhooks)
  .post('/webhooks/:action/:shop_id', go_webhook)
  .post('/products/create/:shop_id', product_create);
  .post('/customers/create/:shop_id', customer_create);

/mnt/c/Users/Matt/Desktop/NodeProjects/myapp/app.js:10
  .post('/customers/create/:shop_id', customer_create);
  ^

SyntaxError: Unexpected token .