binary-serialisation - some thoughts for feature flags

binary-serialisation.js

const reg = {
    foo: true,
    bar: false,
    qux: true,
    wc_123:true,
    new_feature:true
};

function dec2bin(dec){
    return (dec >>> 0).toString(2);
}
function bin2arr(bin/*:string*/){
    return bin.split('').map(v => v==='1')
}
function bin2num(bin/*:string*/){
    return parseInt( bin, 2 );
}

// console.log(dec2bin(999999999).split('').map(v => v==='1'));

// console.log(bin2num('111111111111111111111111111111'));

const register2bin = (register/*: {[key:string]:boolean} */) => {
    return Object.values(register).map((value) => value? 1:0).join('');
}

console.log(register2bin(reg));

console.log(bin2num(register2bin(reg)));

const bin2register = (bin/*:string*/, keys) => {
    return bin.split('').reduce((a, n, i) => { return {...a, ...{ [keys[i]]:(n==='1') } }; }, {});
}

console.log(bin2register('11111', Object.keys(reg)));

console.log(bin2register(dec2bin(23), Object.keys(reg)));