Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | 1x 1x 7x 7x 7x 43x 22x 22x 6x 6x 16x 7x | import { get } from '../get/get';
/**
* @description 查找列表中指定键值重复的项
* @function findListDuplicatesByKeyList
* @param {Array<T>} data - 数据列表
* @param {Array<string>} keyList - 用于比较的键列表，支持路径写法 ['a.b.c', 'd']
* @returns {Array<T>} 返回重复项
* @template T
* @author liukun <919590347@qq.com>
* @example
* import { findListDuplicatesByKeyList } from '@wont/utils'
*
* const data = [
* { id: 1, name: 'Alice', age: 25 },
* { id: 3, name: 'Alice', age: 25 },
* { id: 4, name: 'Charlie', age: 35 },
* { id: 5, name: 'Alice', age: 25 },
* ];
* const expectedData = [
* { id: 1, name: 'Alice', age: 25 },
* { id: 3, name: 'Alice', age: 25 },
* { id: 5, name: 'Alice', age: 25 },
* ];
* findListDuplicatesByKeyList(data, ['name', 'age']) // returns expectedData
*
* const data1 = [
* { id: 1, name: 'Alice', details: { age: 25, city: 'New York' } },
* { id: 2, name: 'Bob', details: { age: 30, city: 'Chicago' } },
* { id: 3, name: 'Alice', details: { age: 25, city: 'New York' } },
* { id: 4, name: 'Charlie', details: { age: 35, city: 'San Francisco' } },
* ];
* const expectedData1 = [
* { id: 1, name: 'Alice', details: { age: 25, city: 'New York' } },
* { id: 3, name: 'Alice', details: { age: 25, city: 'New York' } },
* ];
* findListDuplicatesByKeyList(data1, ['name', 'details.age']); // returns expectedData1
*/
export const findListDuplicatesByKeyList = <T extends Record<string, unknown>>(
data: T[],
keyList: (keyof T | string)[],
): T[] => {
const seen = new Map<string, T>();
const duplicates: T[] = [];
data.forEach((item) => {
const key = keyList.map((k) => get(item, k as string)).join('_');
const existing = seen.get(key);
if (existing) {
duplicates.push(item);
duplicates.push(existing);
} else {
seen.set(key, item);
}
});
return Array.from(new Set(duplicates));
};
|