Test frontend's side-effect support check for compatibility. Testing expression (async function(){ await 1; })() with throwOnSideEffect true Exception: EvalError: Possible side-effect in debug-evaluate Testing expression (async function(){ await 1; })() with throwOnSideEffect false Result: Promise Testing expression 1 + 1 with throwOnSideEffect true Result: 2 Testing expression 1 + 1 with throwOnSideEffect false Result: 2 Set timer for test function. Script execution paused. Testing expression (async function(){ await 1; })() with throwOnSideEffect true Exception: EvalError: Possible side-effect in debug-evaluate Testing expression (async function(){ await 1; })() with throwOnSideEffect false Result: Promise Testing expression 1 + 1 with throwOnSideEffect true Result: 2 Testing expression 1 + 1 with throwOnSideEffect false Result: 2 Script execution resumed.