Formik is a tool to handle all the boilerplate code around forms in React.

It solved most of the headaches that form building can bring.

Explained by its author @jaredpalmer:

What I like about it:

• abstracts away most of the form development complexity
• opt-in
• uses render props to give full render control
• removes the "need" to include forms in the state management
• possible to include existing widgets into forms

Go check yourself.