Kaleido does not raise exception when plotlyjs path argument is a nonexistent file #372
Description
Situation
- A nonexistent filepath is passed as the
plotlyjsargument when creating a Kaleido instance. Theplotlyjsargument is supposed to be either a local path or a URL which points to the Plotly.js script.
Expected behavior
Kaleido() raises an exception if the plotlyjs path does not point to an actual file
Actual behavior
Kaleido is instantiated successfully. Later, when trying to generate an image, the generation fails with a JS Plotly is not defined error:
kaleido._kaleido_tab.JavascriptError: {'result': {'type': 'object', 'subtype': 'error', 'className': 'ReferenceError', 'description': 'ReferenceError: Plotly is not defined\n at Object.render [as plotly] (file:///Users/ekl/code/plotly.py/venv/plotly.py/lib/python3.12/site-packages/kaleido/vendor/kaleido_scopes.js:3021:18)\n at <anonymous>:1:48', 'objectId': '7443417724967587290.1.1'}, 'exceptionDetails': {'exceptionId': 1, 'text': 'Uncaught', 'lineNumber': 3020, 'columnNumber': 17, 'scriptId': '7', 'stackTrace': {'callFrames': [{'functionName': 'render', 'scriptId': '7', 'url': 'file:///Users/ekl/code/plotly.py/venv/plotly.py/lib/python3.12/site-packages/kaleido/vendor/kaleido_scopes.js', 'lineNumber': 3020, 'columnNumber': 17}, {'functionName': '', 'scriptId': '11', 'url': '', 'lineNumber': 0, 'columnNumber': 47}]}, 'exception': {'type': 'object', 'subtype': 'error', 'className': 'ReferenceError', 'description': 'ReferenceError: Plotly is not defined\n at Object.render [as plotly] (file:///Users/ekl/code/plotly.py/venv/plotly.py/lib/python3.12/site-packages/kaleido/vendor/kaleido_scopes.js:3021:18)\n at <anonymous>:1:48', 'objectId': '7443417724967587290.1.2'}}}
Code to reproduce:
import asyncio
import kaleido
import plotly.graph_objects as go
asyncio.run(
kaleido.write_fig(
go.Figure([go.Bar(x=[1, 2, 3], y=[4, 5, 6])]),
"bar_chart.png",
kopts={"plotlyjs": "path/to/file/which/does/not/exist.js"}
)
)