let dict1 = {}; // new & empty object
dict1.nodejs = 5;
dict1.c = 8;
dict1.rust = 1;
let dict2 = {}; // new & empty object
dict2.dart = 7;
dict2.python = 2;
const result = JSON.stringify(Object.assign({}, dict1, dict2), null, 2);
console.log(result);
/*
run:
{
"nodejs": 5,
"c": 8,
"rust": 1,
"dart": 7,
"python": 2
}
*/