let state = {

  iteratedFoo: {} // this is a dictionary of dictionaried objects... an object which is a collection of objects.

};

​

let currentDownloadState = (someValue, anotherValue, urlName) => {

​

    let bar = {

      fileName: urlName,

      someProp: someValue,

      anotherProp: anotherValue

    }

​

    let foo = Object.assign({}, state['iteratedFoo'] )

​

    // console.log('foo[fileName] = ', foo[fileName]); // undefined because it wasn't set yet on first loop

​

    foo[urlName] = bar;

​

    console.log('bar ', bar);

    console.log('foo ', foo);

    console.log('foo[urlName] = ', foo[urlName]);

​

    state['iteratedFoo'] = foo;

​

    console.log('state["iteratedFoo"] ', state['iteratedFoo']);

}

​

currentDownloadState('this value', 'another value', 'www.msn.com');

currentDownloadState('this value', 'another value', 'www.espn.com');

currentDownloadState('this value', 'another value', 'www.theverge.com');

​

​

​