In Pascal that is really common, since the files are the modules. You publish your library as one file, and the user can import it by the file name. I ran wc o

In Pascal that is really common, since the files are the modules. You publish your library as one file, and the user can import it by the file name. I ran wc on FreePascal to search for some. There are a few, but not as many as I expected. 9k file, data structures for the compiler itself: https://gitlab.com/freepascal.org/fpc/source/-/blob/main/./compiler/symdef.pas https://gitlab.com/freepascal.org/fpc/source/-/blob/main/./c... 30k file: Pascal parser/scope resolver: https://gitlab.com/freepascal.org/fpc/source/-/blob/main/packages/fcl-passrc/src/pasresolver.pp https://gitlab.com/freepascal.org/fpc/source/-/blob/main/pac... And the record: 119k file, Sharepoint API (but it seems to be autogenerated): https://gitlab.com/freepascal.org/fpc/source/-/blob/main/packages/odata/src/sharepoint.pp https://gitlab.com/freepascal.org/fpc/source/-/blob/main/pac... As far as libraries go, this is one of my favorites: 23k file, regular expression library: https://github.com/BeRo1985/flre/blob/master/src/FLRE.pas https://github.com/BeRo1985/flre/blob/master/src/FLRE.pas I searched my own files and found a 197k file to parse HTML entities. But that was an autogenerated trie (one switch/case for each letter)