In this example, I have shared constructor overload in TypeScript Regarding constructor overloads one good alternative would be to implement the additional overloads as static factory methods. I think its more readable and simple than checking for all possible argument combinations at the constructor.
Here is a simple example:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | class Person { static fromData(data: PersonData) { let { first, last, birthday, gender = 'M' } = data return new this( `${last}, ${first}`, calculateAge(birthday), gender ) } constructor( public fullName: string, public age: number, public gender: 'M' | 'F' ) {} } interface PersonData { first: string last: string birthday: string gender?: 'M' | 'F' } let personA = new Person('Doe, John', 31, 'M') let personB = Person.fromData({ first: 'John', last: 'Doe', birthday: '10-09-1986' }) |
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