code: function sanitizeContext(context) {
    const sanitizedContext = {
      ...context,
      log : context.log.bind(context)
    };
  
    // We don't want the developper to mess up express flow
    // See https://github.com/yvele/azure-function-express/pull/12#issuecomment-336733540
    delete sanitizedContext.done;
  
    return sanitizedContext;
  }
docs: Copy usefull context properties from the native context provided by the Azure Function engine
  
  See:
  - https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-node#context-object
  - https://github.com/christopheranderson/azure-functions-typescript/blob/master/src/context.d.ts
  
  @param {Object} context Raw Azure context object for a single HTTP request
  @returns {Object} Filtered context