individual/index.js

var root = typeof window !== 'undefined' ?
    window : typeof global !== 'undefined' ?
    global : {};
module.exports = Individual
function Individual(key, value) {
    if (root[key]) {
        return root[key]
    }
    Object.defineProperty(root, key, {
        value: value
        , configurable: true
    })
    return value
}