cirq-web shows a blank window for circuits with no-target operations #5172
Description
It would be reasonable to ignore no-target operations, as they are usually some sort of unobservable annotation. But currently cirq-web crashes instead.
Run this python code and then open the generated page and look at the browser console:
import stim import stimcirq import cirq_web stim_circuit = stim.Circuit(""" QUBIT_COORDS(0, 0) 0 M 0 DETECTOR rec[-1] """) cirq_circuit = stimcirq.stim_circuit_to_cirq_circuit(stim_circuit) cirq_web.Circuit3D(cirq_circuit).generate_html_file( file_name="stim_circuit_viewer.html", open_in_browser=True, ) The python code succeeds, but the browser console says:
Uncaught TypeError: Cannot read properties of undefined (reading 'row') at stim_circuit_viewer.html:5:625129 at Array.forEach (<anonymous>) at s.buildAndAddMeshesToGroup (stim_circuit_viewer.html:5:624903) at new s (stim_circuit_viewer.html:5:624781) at addSymbol (stim_circuit_viewer.html:5:625961) at new a (stim_circuit_viewer.html:5:625922) at t.createGridCircuit (stim_circuit_viewer.html:5:629078) at stim_circuit_viewer.html:9:56 Metadata
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