text: 
  import {REACT_PROVIDER_TYPE, REACT_CONTEXT_TYPE} from "./util";
  export function createContext( defaultValue, calculateChangedBit) {
    if (calculateChangedBits === undefined) {
      calculateChangedBits = null;
    }
  
   var ReactContext = {
      $$typeof: REACT_CONTEXT_TYPE,
      calculateChangedBits,
      defaultValue,
      currentValue: defaultValue,
      changedBits: 0
    };
  
    context.Provider = {
      $$typeof: REACT_PROVIDER_TYPE,
      context,
    };
    context.Consumer = context;
    return context;
  }
  