@darwish/utils-core/esm/dlv/index.js

/* eslint-disable no-param-reassign */
import { isArray, isDev, isFunction, isObject, isString, } from '@darwish/utils-is';
/**
 * @description Get value from object by path.
 * @test ✅Tested (已通过测试放心使用)
 * @param obj The object to query.
 * @param key The key of the property to get.
 * @param def The default value.
 * @param p The index of the key.
 * @param undef The undefined value.
 */
export default function dlv(obj, key, def, p, undef) {
    if (!isObject(obj)) {
        if (isDev) {
            console.error('obj is not an object');
        }
        return obj;
    }
    var keys = [];
    if (isString(key)) {
        keys = key.split ? key.split('.') : [];
    }
    else if (isArray(key)) {
        keys = key;
    }
    var data = Object.assign({}, obj);
    for (p = 0; p < keys.length; p++) {
        var findKey = keys[p];
        data = isObject(data) && findKey in data ? data[findKey] : undef;
    }
    if (data === undef) {
        // not exist with default function
        if (isFunction(def)) {
            // not exist with default function and context
            return def.call(obj);
        }
        return def;
    }
    return data;
}