How to write functions when type of values are different?

I have a problem with making my function smarter. I achieve good results, but I think about the other solution.

I can take boolean or object as parameter. When the parameter is the object I’d like to keep it as now. When the parameter is a boolean value, I’d like to create an object, where keys are taken from another variable (less important) and values are this boolean.

My solution assumes

• adding an empty items object at the beginning
• reading what is a value type and setting items according to the conditions
• taking items and converting to an array
• saving the array in state

Is that OK?

Check my code

const onAddAll = value => {
        let items = {}

        if (typeof value === 'boolean') {
            terms.forEach(term => items[ term ] = value)
        }

        if (typeof value === 'object') {
            items = value
        }

        const checked = Object.keys(items).filter(k => items[ k ])
        setChecked(checked)
    }

Imo, I wouldn’t need the second condition and make it smarter, bot no idea how. Please help!