JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/knockout/knockout-2.2.1.debug.js"></script>

JavaScript

var isObservable = function (item) {
    return (item && item.G);
};

var entity = {
    name: 'I am whatever generic object'
};

// Assigning value to the target object
var target;

// target can be of any of thr following types
target = ko.observableArray(); // knockout observable array (function)
// target = ko.observable(); // knockout observable (function)
// target = {}; // generic object
// target = []; // generic array

//#region resolve method to call
var method;

if (isObservable(target)) {
    method = target.push || target;
} else {
    method = target.push || function (item) { target = item; };
}
//#endregion

// call resolved method
method(entity);

console.dir(target);