first version finished

django/utils/jslex.pyi

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+from typing import (
+    Dict,
+    Iterator,
+    List,
+    Optional,
+    Tuple,
+)
+
+
+def literals(choices: str, prefix: str = ..., suffix: str = ...) -> str: ...
+
+
+def prepare_js_for_gettext(js: str) -> str: ...
+
+
+class JsLexer:
+    def __init__(self) -> None: ...
+
+
+class Lexer:
+    def __init__(self, states: Dict[str, List[Tok]], first: str) -> None: ...
+    def lex(self, text: str) -> Iterator[Tuple[str, str]]: ...
+
+
+class Tok:
+    def __init__(self, name: str, regex: str, next: Optional[str] = ...) -> None: ...