add mathjax and topojson config options

Author: emilykl

plotly/io/_defaults.py

@@ -11,6 +11,8 @@ def __init__(self):
         self.default_width = 700
         self.default_height = 500
         self.default_scale = 1
+        self.mathjax = None
+        self.topojson = None
 
 
 defaults = _Defaults()

plotly/io/_kaleido.py

@@ -173,7 +173,7 @@ def as_path_object(file: Union[str, Path]) -> Union[Path, None]:
     return path
 
 
-def infer_format(path: Path | None, format: str | None) -> str | None:
+def infer_format(path: Union[Path, None], format: Union[str, None]) -> Union[str, None]:
     if path is not None and format is None:
         ext = path.suffix
         if ext:
@@ -344,6 +344,8 @@ def to_image(
                     height=height or defaults.default_height,
                     scale=scale or defaults.default_scale,
                 ),
+                topojson=Path(defaults.topojson).as_uri() if defaults.topojson else None,
+                # mathjax=Path(defaults.mathjax).as_uri() if defaults.mathjax else None,
             )
         except choreographer.errors.ChromeNotFoundError:
             raise RuntimeError(PLOTLY_GET_CHROME_ERROR_MSG)
@@ -608,6 +610,8 @@ def write_images(
                 height=d["height"] or defaults.default_height,
                 scale=d["scale"] or defaults.default_scale,
             ),
+            "topojson": Path(defaults.topojson).as_uri() if defaults.topojson else None,
+            # "mathjax": Path(defaults.mathjax).as_uri() if defaults.mathjax else None,
         }
         for d in arg_dicts
     ]