TypeScript predicates At first glance, a function like isString seems harmless. It tells TypeScript: "If this function returns true, you can trust that the input is a string." But what TypeScript doesn’t do is verify the logic inside that function. You, the developer, are now responsible for proving that assertion is correct. TypeScript simply takes your word for it

TypeScript Lies? The Hidden Risks of Using Predicates!

At first glance, a function like isString seems harmless. It tells TypeScript: "If this function returns true, you can trust that the input is a st...

TypeScript Lies? The Hidden Risks of Using Predicates! At first glance, a function like isString seems harmless. It tells TypeScript: "If this function returns true, you can trust that the input is a string." But what TypeScript doesn’t do is verify the logic inside that function. You, the developer, are now responsible for proving that assertion is correct. TypeScript simply takes your word for it

TypeScript Lies? The Hidden Risks of Using Predicates!

At first glance, a function like isString seems harmless. It tells TypeScript: "If this function returns true, you can trust that the input is a st...