String to JSON

Str2JSON.js

"str1=hello,str2=world".split(",")
  .map(str => str.split("="))
  .map(arr => {let tmp = {};tmp[arr[0]]=arr[1];return tmp;})
  .reduce((a,b) => ({...a, ...b}));

Str2JSON.ts

"str1=hello,str2=world".split(",")
  .map((str: string) => str.split("="))
  .map((arr: string[]) => {let tmp: {[key: string]: string} = {};tmp[arr[0]]=arr[1];return tmp;})
  .reduce((a: {[key: string]: string}, b: {[key: string]: string}) => ({...a, ...b}));