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Do not fail highlighting when the theme declares no languages #125

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Merged
MegatronKing merged 1 commit into from
Aug 21, 2026
Merged

Do not fail highlighting when the theme declares no languages #125

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7 changes: 6 additions & 1 deletion lib/src/_code_highlight.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -213,7 +213,12 @@ class _CodeHighlightEngine {
return;
}
final Map<String, CodeHighlightThemeMode>? modes = _theme?.languages;
if (modes == null) {
// An empty language map means there is nothing to highlight, which is not
// a reason to fail. Without this the payload carried empty lists of sizes,
// `_run` reduced them, and `Bad state: No element` was thrown inside the
// isolate: highlighting died silently and left an unhandled exception in
// the console.
if (modes == null || modes.isEmpty) {
callback(const []);
return;
}
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