browser-request-listener/src/messages.js

Execute callbacks before or after each fetch api call or XMlHttprequest call

const CXHTR_ERROR = "Error in BrowserRequestListener : ";
export const CXTR_ERROR_CALLBACK = CXHTR_ERROR + "Error while calling Callback";
export const CXTR_ERROR_APPLY_CALLED_MORE_THAN_ONCE = CXHTR_ERROR + "Apply method should be called once";