0.2.0 • Published 7 years ago
ts-unknown v0.2.0
The unknown
type
This repo defines a TypeScript type called unknown
. Like any
,
unknown
applies to all JavaScript values, but it results in
much stricter type checking. For example, extracting properties
from an object of type any
results in another any
value:
let a: any = { foo: "bar" };
a.foo // any
By contrast, you can't even extract a property from the type
unknown
without asserting it to be an object first:
let u: unknown = { foo: "bar" };
// a.foo // type error
(a as { foo: string }).foo // string