JSFiddle - React, Tailwind, and code Playground

JavaScript

var map;

JSONEventToMap = function(evt) {
			function objToStrMap(obj) {
			    let strMap = new Map();
			    for (let k of Object.keys(obj)) {
			        strMap.set(k, obj[k]);
			    }
			    return strMap;
			}
			function jsonToStrMap(jsonStr) {
			    return objToStrMap(JSON.parse(jsonStr));
			}
			return jsonToStrMap(evt);
		}

map = new Map();
map.set(true, [
    "1 + 1 = 2",
    "cows are animals",
    "grass is green",
]);
map.set(false, [
    "the moon is made from cheese",
    "the earth is flat",
    "pyramids were made by aliens",
]);


map.forEach(function (value, key) {
    console.log(typeof key, key);
});