https://www.mykeeper.com/_next/static/HLeaNg1JrZDV6qxPGxSAv/_clientMiddlewareManifest.js

1self.__MIDDLEWARE_MATCHERS = [];self.__MIDDLEWARE_MATCHERS_CB && self.__MIDDLEWARE_MATCHERS_CB()

Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.