TYPESCRIPT

union value typescript

let myVar : string | number;        //Variable with union type declaration
 
myVar = 100;            //OK
myVar = 'Lokesh';       //OK
 
myVar = true;           //Error - boolean not allowed

union value typescript

let myVar : string | number;    //myVar can store string and number types

typescript programmatically union

class types {Foo: typeof Foo; Bar: typeof Bar;};
type myUnion = typeof types[keyof typeof types];