Leveraging the typeof Operator within a Class

How can we utilize typeof in order to specify the type of a class property? Take a look at both examples below, where example A works but example B does not.

A) Works outside class

const data: {age:number, name:string} = {age:10, name:'John'};
const age: typeof data.age = 33;

B) Not functional inside class. Is there a way to use the same method as in A within a class?

class Person{
    
    data: {age:number, name:string} = {age:10, name:'John'};
    age: typeof this.data.age; // Error, Cannot find name 'this'.(2304)

}

Answer №1

Thanks to @apokryfos' suggestion in the comments, this solution is effective!

class Individual {
    
    info: {years:number, label:string} = {years:10, label:'Alice'};
    yearsOld: Person['data']['age'] = 13; 

}

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