Eslint no-return-assing and no-param-reassign error

Question

const someId = data.id;
                values.some_id = someId;
                values.updateParams.map(
                    params => params.some_another_id = someId,
                );

In the above code, eslint is throwing some error and won't be able to understand those. Here I added the screenshots of the error.

Answer 1

const someId = data.id;
values.some_id = someId;
values.updateParams.map(
    params => ({ ...params,  serviceable_port_pair_id: someId,})
);

you are supposed to return the Object, how it should look like, but not mutate the parameter inside the arrow function

and for the first error message. The insutructions couldnt be clearer. You shouldnt reassign already defined params