isReservedTag: (x?: string) => boolean;
isReservedAttr: (x?: string) => boolean;
parsePlatformTagName: (x: string) => string;
isUnknownElement: (x?: string) => boolean;
getTagNamespace: (x?: string) => Zeichenfolge | void;
mustUseProp: (tag: string, type: ?string, name: string) => boolean;
flow 的类型系统
见这个回答/q/10...