gtht-miniapp-sdk/utils/object.js

gtht-miniapp-sdk 是一套基于 Uniapp + Vue3 框架开发的兼容多端的 UI 组件库

import { isPlainObject } from './is';
/**
 * 此方法创建一个对象，该对象由自己不可省略的属性组成。
 */
export function omit(object, paths) {
    const newObj = {};
    Object.keys(object).forEach((key) => {
        if (!paths.includes(key)) {
            ;
            newObj[key] = object[key];
        }
    });
    return newObj;
}
/**
 * 深度克隆对象，仅克隆数组和无格式对象，其他类型会被直接返回
 */
export function deepClone(target) {
    if (Array.isArray(target)) {
        return target.map((item) => {
            return deepClone(item);
        });
    }
    if (isPlainObject(target)) {
        const obj = {};
        Object.keys(target).forEach((k) => {
            obj[k] = deepClone(target[k]);
        });
        return obj;
    }
    return target;
}
/**
 * 深拷贝其他对象到第一个对象
 */
export function extend(...args) {
    const target = args[0], l = args.length;
    let i = 1, options, name, src, copy, copyIsArray, clone;
    for (; i < l; i++) {
        options = args[i];
        if (options !== null && options !== undefined) {
            for (name in options) {
                src = target[name];
                copy = options[name];
                // 防止有环
                if (target === copy) {
                    continue;
                }
                // 深复制
                if (copy &&
                    (isPlainObject(copy) || (copyIsArray = Array.isArray(copy)))) {
                    if (copyIsArray) {
                        copyIsArray = false;
                        clone = src && Array.isArray(src) ? src : [];
                    }
                    else {
                        clone = isPlainObject(src) ? src : {};
                    }
                    // 只克隆对象，不移动
                    target[name] = extend(clone, copy);
                    // 不添加未定义的值
                }
                else if (copy !== undefined) {
                    target[name] = copy;
                }
            }
        }
    }
    return target;
}
export function treeToMap(tree, keyName, childrenName, parentName) {
    const map = {};
    function recurse(children, parent) {
        children.forEach((node) => {
            map[node[keyName]] = node;
            node[parentName] = parent;
            if (Array.isArray(node[childrenName])) {
                recurse(node[childrenName], node);
            }
        });
    }
    recurse(tree, null);
    return map;
}
/**
 * @description: 链式获取对象值
 * @param object
 * @param chain 通过点分割的字符串或者字符串数组
 */
export function chainGet(object, chain) {
    let target = object;
    if (chain) {
        chain = typeof chain === 'string' ? chain.split('.') : chain;
        for (const key of chain) {
            if (target && typeof target === 'object') {
                target = target[key];
            }
            else {
                return target;
            }
        }
    }
    return target;
}
/**
 * @description: 链式设置对象值
 * @param object
 * @param chain 通过点分割的字符串或者字符串数组
 * @param value 要设置的值
 */
export function chainSet(object, chain, value) {
    let target = object;
    chain = typeof chain === 'string' ? chain.split('.') : chain;
    if (chain.length === 0) {
        return;
    }
    for (let i = 0, l = chain.length; i < l; i++) {
        if (target && typeof target === 'object') {
            const key = chain[i];
            if (i === l - 1) {
                target[key] = value;
                return;
            }
            else {
                target = target[key];
            }
        }
        else {
            return;
        }
    }
}
// 将嵌套数据结构转换为多维数组
export function nestedToMulti(nested, values, fieldKeys) {
    const columns = [];
    function recurse(list, index = 0) {
        columns.push(list);
        const selectedValue = values[index];
        let selectedOption = list.find((option) => option[fieldKeys.value] === selectedValue);
        if (!selectedOption) {
            selectedOption = list[0];
        }
        if (selectedOption) {
            const nextList = selectedOption[fieldKeys.children];
            if (Array.isArray(nextList)) {
                recurse(nextList, ++index);
            }
        }
    }
    recurse(nested);
    return columns;
}