splitlines and source_to_unicode are utils of parso.

jedi/utils.py

@@ -11,9 +11,10 @@ import re
 import os
 import sys
 
+from parso.utils import splitlines
+
 from jedi import Interpreter
 from jedi.api.helpers import get_on_completion_name
-from jedi import common
 
 
 READLINE_DEBUG = False
@@ -85,7 +86,7 @@ def setup_readline(namespace_module=__main__):
                     logging.debug("Start REPL completion: " + repr(text))
                     interpreter = Interpreter(text, [namespace_module.__dict__])
 
-                    lines = common.splitlines(text)
+                    lines = splitlines(text)
                     position = (len(lines), len(lines[-1]))
                     name = get_on_completion_name(
                         interpreter._get_module_node(),