fix(no-floating-observables): handle sequence expression

Author: JasonWeinzierl

src/rules/no-floating-observables.ts

@@ -71,6 +71,13 @@ export const noFloatingObservablesRule = ruleCreator({
 
         checkNode(node.expression);
       },
+      'ExpressionStatement > SequenceExpression': (node: es.SequenceExpression) => {
+        node.expressions.forEach(expression => {
+          if (isCallExpression(expression)) {
+            checkNode(expression);
+          }
+        });
+      },
     };
   },
 });

tests/rules/no-floating-observables.test.ts

@@ -90,5 +90,15 @@ ruleTester({ types: true }).run('no-floating-observables', noFloatingObservables
         options: [{ ignoreVoid: false }],
       },
     ),
+    fromFixture(
+      stripIndent`
+        // sequence expression
+        import { of } from "rxjs";
+
+        of(42), of(42), void of(42);
+        ~~~~~~ [forbidden]
+                ~~~~~~ [forbidden]
+      `,
+    ),
   ],
 });