Javascript 时间转换器：将内容时间与广告时间分开

const content  = [{start: 0, end: 50, id: 'C1'},{start: 50, end: 100, id: 'C2'}];

const ad = [{start:10, end: 20, id: 'A1' },{start:30, end: 60, id: 'A2' },{start:80, end: 140, id: 'A3' }];

const cPoints = content.flatMap(e => [e.start, e.end]); // [0, 50, 50, 100]
const aPoints = ad.flatMap(e => [e.start, e.end]); // [10, 20, 30, 60, 80, 140]
const rangeMin = Math.min(...cPoints); // 0
const rangeMax = Math.max(...cPoints); // 100

const rangePoints = [...new Set([...aPoints, ...cPoints])] // [10, 20, 30, 60, 80, 140, 0, 50, 100]
    .filter(point => (point >= rangeMin) && (point <= rangeMax)) // [10, 20, 30, 60, 80, 0, 50, 100]
    .sort((a, b) => a - b);  // [0, 10, 20, 30, 50, 60, 80, 100]
  
const getObjByPoint = (point, arr) => 
    arr.find((e) => (e.start <= point) && (point <= e.end));

const getFirstId = (point) => 
    (getObjByPoint(point, ad) || getObjByPoint(point, content)).id;
  
const result = rangePoints.reduce((acc, end, index, arr) => {
    if (index === 0) return acc;
    
    let start = arr[index - 1];
    const middle = (start + end) / 2;
    const id = getFirstId(middle);
    if (acc.at(-1)?.id === id) {
        start = acc.pop().start;
    }
    acc.push({ start, end, id });
    
    return acc;
}, []);

console.log(result);

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