วิธีรวมค่าต่างๆของมพล่ามคำเชยๆออกมาไม่หยุดกุญแจอยู่ในตารางคู่ลำดับของวัตถุที่มีได้หลายที่เพิ่งถูกสร้างกุญแจไว้?

arrOne=[{series_1:25,category:"Category 1",series_2:50},{series_1:11,category:"Category 2",series_2:22},{series_1:32,category:"Category 1",series_2:74},{series_1:74,category:"Category 3",series_2:98},{series_1:46,category:"Category 3",series_2:29,series_3:50}];

const res = arrOne.reduce((a, b) => {
  let found = a.find(e => e.category == b.category)
  if (found) {
    Object.keys(b).forEach(e => {
      if (/series_\d+/g.test(e)) found[e] = found[e] ? found[e] + b[e] : b[e];
    })
  } else {
    a.push(b)
  }
  return a;
}, [])

console.log(res)

arrOne = [ { "series_1": 25, "category": "Category 1", "series_2": 50 }, { "series_1": 11, "category": "Category 2", "series_2": 22 }, { "series_1": 32, "category": "Category 1", "series_2": 74 }, { "series_1": 74, "category": "Category 3", "series_2": 98 }, { "series_1": 46, "category": "Category 3", "series_2": 29 },];

const result = [];
arrOne.reduce((acc, {category, ...series}) => {
  if (acc.has(category)) {
    Object.entries(series).forEach(([key, value]) => {
      if (key.startsWith('series_')) {
        acc.get(category)[key] = (acc.get(category)[key] || 0) + value;
      }
    });
  } else {
    const item = {category, ...series};
    result.push(item);
    acc.set(category, item);
  }
  return acc;
}, new Map());

console.log(result);

const arr1 = [{"series_1":25,"category":"Category 1","series_2":50},{"series_1":11,"category":"Category 2","series_2":22},{"series_1":32,"category":"Category 1","series_2":74},{"series_1":74,"category":"Category 3","series_2":98},{"series_1":46,"category":"Category 3","series_2":29}]

const t1 = performance.now()

const cats = arr1.reduce((map, { category, ...series }) =>
  map.set(category, Object.entries(series)
    .reduce((s, [ key, count ]) => ({
      ...s,
      [ key ]: (s[key] ?? 0) + count
    }), map.get(category) ?? {})
  ), new Map())

const allCategoriesAndValues = Array.from(cats, ([ category, series ]) => ({
  category,
  ...series
}))

const t2 = performance.now()

console.info(allCategoriesAndValues)
console.log(`Took ${t2 - t1}ms`)

.as-console-wrapper { max-height: 100% !important; }

const arrOne = 
  [ { series_1: 25, category: 'Category 1', series_2: 50 } 
  , { series_1: 11, category: 'Category 2', series_2: 22 } 
  , { series_1: 32, category: 'Category 1', series_2: 74 } 
  , { series_1: 74, category: 'Category 3', series_2: 98 } 
  , { series_1: 46, category: 'Category 3', series_2: 29 } 
  ] 

console.time('chrono')

const allCategoriesAndValues =
  Object.entries(
  arrOne.reduce((r,{ category, ...series })=>
    {
    let cat = r[category] = r[category] ?? {} 
    Object.entries(series).forEach(([sName,val]) => cat[sName] = (cat[sName] ?? 0) + val);
    return r
    },{})
  ).map(([category,series])=>({category,...series}))

console.timeEnd('chrono')

console.log( allCategoriesAndValues )

.as-console-wrapper {max-height: 100%!important;top:0 }

const arrOne = [
  {"series_1": 25, "category": "Category 1", "series_2": 50},
  {"series_1": 11, "category": "Category 2", "series_2": 22},
  {"series_1": 32, "category": "Category 1", "series_2": 74},
  {"series_1": 74, "category": "Category 3", "series_2": 98},
  {"series_1": 46, "category": "Category 3", "series_2": 29},
];

let buffer = {};
arrOne.forEach(i=>{
  let c = i.category;
  buffer[c] = buffer[c] || {};
  delete i.category;
  Object.keys(i).forEach(k=>{
    buffer[c][k] = buffer[c][k] || 0;
    buffer[c][k] += i[k];
  });
});

console.log(buffer);

let final = Object.keys(buffer).map(k=>{return {[k]: buffer[k]}});
console.log(final);