Choices for boolean type don't return boolean values

[bhch]

HTML (or browsers?) always returns a string value from an input. However, this library should convert the type as per the type keyword.

For example, something like this should return a boolean value:

{
    type: 'boolean',
    choices: [
        {label: 'Yes', value: true},
        {label: 'No', value: false},
    ]
}

This seems to work properly for number type: even though the browser returns a string, the values are converted to number.