Use the Omit utility type to create a new type with specific properties removed。

omit-util.ts

interface BaseType {
  a: string
  b: number
  c: number[]
}

// Keys 'a' and 'b' will be removed
type SubsetType = Omit<BaseType, 'a' | 'b'>

const subset: SubsetType = {
  c: [1, 2, 3]
}