const dict = {
key1: {
nestedKey: "1"
}
}
const str = "key1.nestedKey"
const value = str.split(".").reduce((acc, key) => {
return acc[key] ? acc[key] : null;
}, dict);
console.log(value)
{
options: {
scales: {
xAxes: [{
barPercentage: x,
categoryPercentage: y
}]
}
}
}