antd-mobile/2x/es/utils/nearest.js

<img src="https://gw.alipayobjects.com/mdn/rms_ee68a8/afts/img/A*hjjDS5Yy-ooAAAAAAAAAAAAAARQnAQ" alt="logo" width="100%" />

export function nearest(arr, target) {
  return arr.reduce((pre, cur) => {
    return Math.abs(pre - target) < Math.abs(cur - target) ? pre : cur;
  });
}