utility function to assert and narrow a type using typebox
npm install typebox-assert> utility function to assert and narrow a type using typebox
``sh`
npm install typebox-assert
Note that assertType does not just assert, it also:
- removes extra properties from value
- generates missing properties using default schema annotations
- converts type mismatches to their target type where possible
The operations are done on the provided object in a mutable manner.
For best practices, we recommend adding an $id to schemas used by assertType.
`ts
import { Type } from '@sinclair/typebox';
import { assertType } from 'typebox-assert';
const Person = Type.Object(
{
name: Type.String(),
email: Type.String(),
},
{ $id: 'Person' },
);
function createUser(data: unknown) {
assertType(Person, data); // throws AssertionError when invalid
db.users.insert(data); // data is narrowed to type Person
}