ObjectsCode (1/2)
Write a function flattenObject(obj) that flattens a deeply nested object into a single-level object, using dot notation for nested keys.
Example:
const obj = {
a: 1,
b: { c: 2, d: { e: 3, f: 4 } },
g: { h: 5 }
};
console.log(flattenObject(obj));
/*
{
"a": 1,
"b.c": 2,
"b.d.e": 3,
"b.d.f": 4,
"g.h": 5
}
*/