I have been stuck on this for a little while now, but I'm unsure on how I can flatten and reduce the below example data into unique key value pairs with the value being combined if there are multiples of the same key.
Example:
const data = [
{ test: 200 },
{ test2: 300, test3: 100 },
{ test3: 400, test4: 150, test2: 50 },
];
Expected result:
const result = [
{ test: 200 },
{ test2: 350 },
{ test3: 500 },
{ test4: 150 }
];
Any ideas?
TIA
Try this:
const data = [
{ test: 200 },
{ test2: 300, test3: 100 },
{ test3: 400, test4: 150, test2: 50 }
];
const flattenedAndReduced = data.reduce((prev, current) => {
Object.keys(prev).forEach((key, index) => {
if (current[key]) {
prev[key] += current[key];
delete current[key];
}
});
Object.keys(current).forEach((key) => {
if (!prev[key]) prev[key] = current[key];
});
return { ...prev };
});
const flattenedAndReducedToArray = Object.keys(flattenedAndReduced).map((key) => ({
[key]: flattenedAndReduced[key]
}));