nl_tokens: Creates a function which checks whether or not a given file is ignoreable .
pl_tokens: function filterNeverIgnoredFiles ( p ) { const basedir = <mask> . dirname ( p . filePath ) const mainFilePath = typeof p . main === "string" ? path . join ( basedir , p . main ) : null return filePath => path . join ( basedir , filePath ) !== mainFilePath && filePath !== "package.json" && ! NEVER_IGNORED . test ( path . relative ( basedir , filePath ) ) }