validate.ts

// Validating emails with email-validator.
// Validation happens inline, straight inside the arrow function
const user = await User.findOne(user => user.name == "Glauber Costa" &&
                                        user.age >= 40 &&
                                        validate(user.email));
return new Response(user?.email ?? "not found");

// Same code, but now splitting database and runtime code out-of-line.
// The results are equivalent in ChiselStrike.
const user = await User.findOne(user => user.name == "Glauber Costa" && user.age >= 40);
return new Response(validate(user?.email) ? user.email :  "not found");