Improve monotonic assert + fix black formatting in vscode (#162)

* 📝 improve assert message, see #158

* ⚔️ remove black formatting color argument, see #161

* 🙈 formatting

* 🖊️ review code

Co-authored-by: Jeroen Van Der Donckt <[email protected]>

Author: jonasvdd

plotly_resampler/figure_resampler/figure_resampler_interface.py

@@ -780,7 +780,11 @@ def _construct_hf_data_dict(
         hf_series = self._to_hf_series(x=dc.x, y=dc.y)
 
         # Checking this now avoids less interpretable `KeyError` when resampling
-        assert hf_series.index.is_monotonic_increasing
+        assert hf_series.index.is_monotonic_increasing, (
+            "In order to perform time series aggregation, the data must be "
+            "sorted in time; i.e., the x-data must be (non-strictly) "
+            "monotonically increasing."
+        )
 
         # As we support prefix-suffixing of downsampled data, we assure that
         # each trace has a name

pyproject.toml

@@ -65,7 +65,6 @@ ignore = ["E501"] # Never enforce `E501` (line length violations).
 
 # Formatting
 [tool.black]
-color = true
 line-length = 88
 
 # Sort imports