[react-native] FormData is a class
[react-native] FormData is a class

See https://github.com/facebook/react-native/blob/master/Libraries/Network/FormData.js#L49
georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,mcliment/DefinitelyTyped,magny/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped,borisyankov/DefinitelyTyped