Is there a javascript library out there that would parse this type=1&merchant[type]=1&member[0][type]=1 into an object. The result would look like:
{type:1, merchant: {type: 1}, member: [{type: 1}]}
>Solution :
You could split the string into parts of keys and values anbuild a new object by looking to the following property of creating an array or an object for the actual level of a nested structure.
At the end assign the value to the last property.
const
setValue = (object, path, value) => {
const
keys = path.replace(/[\[]/gm, '.').replace(/[\]]/gm, '').split('.'),
last = keys.pop();
keys
.reduce((o, k, i, kk) => o[k] ??= (isFinite(i + 1 in kk ? kk[i + 1] : last) ? [] : {}), object)
[last] = isFinite(value) ? +value : value;
},
string = 'type=1&merchant[type]=1&member[0][type]=1',
result = string.split('&').reduce((r, pair) => {
setValue(r, ...pair.split('='));
return r;
}, {});
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }