CodeWars: Objectify A Url Query String Solution

1// Converts a URL Query String into an object map
2function convertQueryToMap(query) {
3 const res = {}
4 const keyValuePairs = query
5 .split("&")
6 .map(kvp => kvp.split("="))
7 .filter(([key]) => Boolean(key))
8 for (const keyValuePair of keyValuePairs) {
9 const [key, value] = keyValuePair
10 const path = key.split(".")
11 let acc = res
12 for (const [i, prop] of path.entries()) {
13 if (i === path.length - 1) {
14 acc[prop] = decodeURIComponent(value)
15 continue
16 }
17 if (!acc[prop]) {
18 acc[prop] = {}
19 }
20 acc = acc[prop]
21 }
22 }
23 return res
24}

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