clean.js

// TODO: tsify
"use strict";
function isArray(obj) {
    return obj && Array.isArray(obj);
}
function isObject(obj) {
    return obj && obj !== null && typeof obj === 'object';
}
function hasNothing(obj) {
    if (isArray(obj)) {
        return obj.length === 0;
    }
    if (isObject(obj)) {
        return Object.keys(obj).length === 0;
    }
    return typeof obj === 'undefined' || obj === null;
}
function removeProps(obj, key, parent) {
    var i, value, isFullyEmpty = true;
    if (isArray(obj)) {
        for (i = 0; i < obj.length; ++i) {
            value = obj[i];
            if (isObject(value)) {
                removeProps(value, i, obj);
            }
            if (hasNothing(value)) {
                obj.splice(i--, 1);
            }
            else {
                isFullyEmpty = false;
            }
        }
    }
    else {
        for (i in obj) {
            value = obj[i];
            if (isObject(value)) {
                removeProps(value, i, obj);
            }
            if (hasNothing(value)) {
                delete obj[i];
            }
            else {
                isFullyEmpty = false;
            }
        }
    }
    if (typeof key !== 'undefined' && isFullyEmpty) {
        delete parent[key];
        removeProps(obj);
    }
}
module.exports = function (obj) {
    removeProps(obj);
    return obj;
};