In general, the solution was simple in the Client folder, I put the file
{ "compilerOptions": { "module": "commonjs", "noImplicitAny": true, "removeComments": true, "preserveConstEnums": true, "sourceMap": true, "outFile": "../client.js" }, "files": [ "../Server/server.ts" ], "compileOnSave": true }
And in the Server folder also put a file
{ "compilerOptions": { "module": "commonjs", "noImplicitAny": true, "removeComments": true, "preserveConstEnums": true, "sourceMap": true, "outFile": "../server.js" }, "files": [ "server.ts" ], "compileOnSave": true }