Deep nested types

June 24, 2022

I am newby in typescript. therefore could someone describe me how to realize this type of deep nested object programatically:

type typeDeepNestedGeneric<T> = T
    | {[key: string]: T}
    | {[key: string]: {[key: string]: T}}
    | {[key: string]: {[key: string]: {[key: string]: T}}}
    | {[key: string]: {[key: string]: {[key: string]: {[key: string]: T}}}}
    | {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: T}}}}}
    | {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: T}}}}}}
    | {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: {[key: string]: T}}}}}}}

in my class object I want to define properties with objects with unlimited depth of types included:

>Solution :

Does this satisfy?


type DeepNestedGeneric<T> = T | {[key: string]: DeepNestedGeneric<T> }

const x : DeepNestedGeneric<string> = {
     foo: "wsdfhsdf",
     bar: {
          whatever: "akjdhakjs",
          baz: {
               blerg: "dsfsdsdfsd",
               errors: 5 // Type 'number' is not assignable to type 'DeepNestedGeneric<string>'.
          }
     }
}