in lib/generators/react/component_generator.rb [242:257]
def self.lookup(type = 'node', options = '')
react_prop_type = REACT_PROP_TYPES[type]
if react_prop_type.blank?
if type =~ /^[[:upper:]]/
react_prop_type = REACT_PROP_TYPES['instanceOf']
else
react_prop_type = REACT_PROP_TYPES['node']
end
end
options = options.to_s.gsub(/[{}]/, '').split(',')
react_prop_type = react_prop_type.call(*options) if react_prop_type.respond_to? :call
react_prop_type
end