InstanceType

This type constructs a type consisting of the instance type of a constructor function in Type.

class C {
  x = 0;
  y = 0;
}

type T0 = InstanceType<typeof C>;  
// type T0 = C

type T1 = InstanceType<any>;    
// type T1 = any

type T2 = InstanceType<never>;    
// type T2 = never

type T3 = InstanceType<string>;
// ^ Type 'string' does not satisfy the constraint 'abstract new (...args: any) => any'.
    
type T4 = InstanceType<Function>;
// ^ Type 'Function' does not satisfy the constraint 'abstract new (...args: any) => any'.

Learn more from the following links:

• InstanceType