Javascript 从具有随机 struct 的对象创建一个新数组

function extractDataFromJSON(obj, fields, result = [], acc = null) {

    if (Array.isArray(obj)) {
        for (const item of obj) {
            extractDataFromJSON(item, fields, result, acc);
        }
    } else if (obj && typeof obj === 'object') {

        const keys = Object.keys(obj).filter(key => fields[key]);
        const fieldsLen = Object.keys(fields).length;

        if (keys.length) {

            const item = acc || {};

            for (const key in obj) {
                if (fields[key]) {
                    item[fields[key]] = obj[key] || '';
                    continue;
                }
                // check the property if the object is incomplete
                keys.length < fieldsLen && extractDataFromJSON(obj[key], fields, null, item);
            }
            // push only complete items and if the result array is present 
            // (not the collecting properties mode)
            if(result && Object.keys(item).length === fieldsLen){
                result.push(item);
            }

        } else {
            for (const key in obj) {
                extractDataFromJSON(obj[key], fields, result, acc);
            }
        }

    }
    return result;

}

const jsonData1 = {
    data: [
        {
            customerName: 'John Doe',
            customerAddress: '123 Main St',
            customerAge: 30,
        },
        {
            customerName: 'Jane Smith',
            customerAddress: '456 Maple Ave',
            customerAge: 25,
        },
        // ... other data ...
    ],
    data2: [
        {
            customerName: 'John Doe2',
            customerAddress: '123 Mainsss St',
            customerAge: 30,
        },
        {
            customerName: 'Jane Smith3',
            customerAddress: '456 Mapleaaa Ave',
            customerAge: 25,
        },
        // ... other data ...
    ],
};

const jsonData3 = [{
    differentKey: [
        {
            customerName: 'John Doe',
            customerAge: 30,
            iAmDummy: [{ dummyArray: [null, undefined, '', false, new Date] }],
            customerAddress: '123 Main St'
        },
        {
            customerName: 'Jane Smith',
            iAmDummy: [{ dummyArray: [null, undefined, '', false, new Date] }],
            lookDeeper: {customerAge: 40},
            address: [{
                customerAddress: '456 Maple Ave',
            }]
        },
    ],
}];


const newArray1 = extractDataFromJSON(jsonData1, {customerName: 'name', customerAddress: 'address', customerAge: 'age'});
console.log(newArray1);

const newArray3 = extractDataFromJSON(jsonData3, {customerName: 'name', customerAddress: 'address', customerAge: 'age'});
console.log(newArray3);