Typescript: Specify type in object declaration -

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var = {     b:null,  }

i want specify type of a.b (num:number) => void while still setting null.

is possible without using class or interface?

this should work:

let = {   b: <(number) => void> null };

or can use type declaration make special function explicit:

declare type myfun = (number) => void; let = {   b: <myfun> null };

although it's not necessary, tend make use of type declarations in code when there function has semantics not caught in type signature, can specified in name.


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