How to convert boolean to string - NestJS / JS / Node

Question

I am new to NestJS as a server. I have a table in DB that I am querying, and the column name is precedence, and it is boolean meaning in DB just 0 or 1.
I have this code that I understood maps the data to DTO.

forMember(
          (destination) => destination.precedence,
          mapFrom((source) => source.precedence),
        ),

but instead of 1 I need it to be true and instead of 0 I need it to be false

Can it be done? in the mapper?

Answer 1

you just have to check if source.precedence is equal to '1' then return true else return false

forMember(
 (destination) => destination.precedence,
 mapFrom((source) => source.precedence === 1), // this will return false also if the value is different from 0 and 1
),