Respecting someone’s gender in a Person object.

/*
 * A 3-bit number that represents the person's gender.
 * (bits in the order of: MFT.)
 * (MFT stands for "Male Female Trans".)
 * (Special blends:
 *  0x111 = Gender Fluid
 *  0x110 = Bigender
 *  0x001 = Nonbinary
 *  0x000 = Agender
 * )
 * (
 *  Expansion upon this format is welcome. If you want
 *  to add more attributes, for more non-binary genders,
 *  feel free, and tell me your format below!
 * )
*/
type Gender = number;
function sterilizeGenderId(g:Gender):Gender {
    return g & 0b111; // 0b111 = 7.
}

class Person {
    constructor(
        name:String|string, age:number, gender:Gender
    ) {
        this.gender = sterilizeGenderId(gender);
        this.name = name;
        this.age = age;
    }
    gender:Gender;
    name:String|string;
    age:number;
}