At the moment attribute always reflect in this.porps as a string. But in order to use React components without changes we need to configure typecasting for attributes.

There are few propositions from Thomas Reggi on how to make this work:

The only problem with this would be if there was a conflict with a library that had a prop with the keyword reactive.

Would love your thoughts on this!!

<react-timer initial-time-remaining="600000">
</react-timer>

Besides the attribute json above. thinking

<react-timer initial-time-remaining="600000" initial-time-remaining-type="number">
</react-timer>

or

<react-timer initial-time-remaining="num!600000">
</react-timer>

or

<react-timer initial-time-remaining="600000" initial-time-remaining-transform="parseInt(this, 10);">
</react-timer>

or keep this logic out of the tag and put it in when registering

registerReact('react-timer', timerClass, {
  "initialTimeRemaining": function(props){
    return parseInt(props.initialTimeRemaining, 10);
  }
});

The last one there would also let you return a function as a prop, which is better then in the attributes.