Roact

function _G.createElement(class, properties, children)
    return {
        ["Class"] = class,
        ["Children"] = children,
        ["Properties"] = properties
    }
end

function _G.mount(element, parent)
    local instance = Instance.new(element.Class, parent)

    for name, value in pairs(element.Properties) do
        instance[name] = value
    end

    for _, child in pairs(element.Children) do
        _G.mount(child, instance)
    end

    return instance
end

_G.Roact = {["createElement"] = _G.createElement, ["mount"] = _G.mount}