获取两个接口类型中的差值属性。
type Foo = {
a: string;
b: number;
}
type Bar = {
a: string;
c: boolean
}
type Result1 = Diff<Foo,Bar> // { b: number, c: boolean }
type Result2 = Diff<Bar,Foo> // { b: number, c: boolean }
import type { Equal, Expect } from '@type-challenges/utils'
type Foo = {
name: string
age: string
}
type Bar = {
name: string
age: string
gender: number
}
type Coo = {
name: string
gender: number
}
type cases = [
Expect<Equal<Diff<Foo, Bar>, { gender: number }>>,
Expect<Equal<Diff<Bar, Foo>, { gender: number }>>,
Expect<Equal<Diff<Foo, Coo>, { age: string, gender: number }>>,
Expect<Equal<Diff<Coo, Foo>, { age: string, gender: number }>>,
]