99 lines
2.2 KiB
JavaScript
99 lines
2.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.findJson = findJson;
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exports.getStr = getStr;
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exports.difference = difference;
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exports.intersect = intersect;
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exports.union = union;
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exports.formatJsonByFile = formatJsonByFile;
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exports.deWeight = deWeight;
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/**
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* @name 从一组路径里查找到所有json文件
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* @export
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* @param {Array<string>} pathArr
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* @returns {Set<string>}
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*/
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function findJson(pathArr) {
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const result = new Set();
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for (let item of pathArr) {
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const endIndex = item.length;
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const str = item.substring(endIndex - 5, endIndex);
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if (str === '.json') {
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result.add(item);
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}
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}
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return result;
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}
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/**
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* @name 已知前后文取中间文本
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* @export
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* @param {string} str
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* @param {string} start
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* @param {string} end
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* @returns {(string | null)}
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*/
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function getStr(str, start, end) {
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const reg = new RegExp(`${start}(.*?)${end}`);
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let res = str.match(reg);
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return res ? res[1] : null;
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}
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/**
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* @name 差集
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* @export
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* @template T
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* @param {Set<T>} current
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* @param {Set<T>} target
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* @returns {Set<T>}
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*/
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function difference(current, target) {
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return new Set([...target].filter(x => !current.has(x)));
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}
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/**
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* @name 获取交集
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* @export
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* @template T
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* @param {Set<T>} current
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* @param {Set<T>} target
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* @returns {Set<T>}
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*/
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function intersect(current, target) {
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return new Set([...target].filter(x => current.has(x)));
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}
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/**
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* @name 获取并集
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* @export
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* @template T
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* @param {Set<T>} current
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* @param {Set<T>} target
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* @returns {Set<T>}
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*/
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function union(current, target) {
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return new Set([...current, ...target]);
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}
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/**
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* @name 格式化json
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* @export
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* @template T
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* @param {T} data
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* @returns {string}
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*/
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function formatJsonByFile(data) {
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return JSON.stringify(data, null, 2);
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}
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/**
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* @name 数组对象去重
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* @export
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* @param {Array<any>} arr 需要去重的数组或set
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* @param {*} [type] 需要根据哪个字段去重
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* @returns
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*/
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function deWeight(arr, type) {
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let map = new Map();
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for (let item of arr) {
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if (!map.has(item[type])) {
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map.set(item[type], item);
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}
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}
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return new Set([...map.values()]);
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}
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