function activateSelectionSync()

in src/extension/index.ts [228:246]

• 13 lines of code
• 5 McCabe index (conditional complexity)

function activateSelectionSync(disposables: Disposable[], panel: Panel) {
    disposables.push(window.onDidChangeTextEditorSelection(({ selections, textEditor }) => {
        // Anti-feedback-loop. Prevent panel-originated changes from echoing back to the panel.
        if (window.activeTextEditor !== textEditor) return;

        // Length 0  - I have yet to see this in practice.
        // Length 2+ - User is likely editing and does not want to be distracted by selection changes.
        if (selections.length !== 1) return;
        const selection = selections[0];
        const position = selection.isReversed ? selection.start : selection.end; // The blinking caret.

        const diagnostics = languages.getDiagnostics(textEditor.document.uri);
        const diagnostic = diagnostics.find(diagnostic => diagnostic.range.contains(position)) as ResultDiagnostic | undefined;
        const result = diagnostic?.result;
        if (!result) return;

        panel.select(result);
    }));
}