Add ASI protection for TSNonNullExpression (#5262)

src/language-js/printer-estree.js

@@ -5461,7 +5461,8 @@ function hasNakedLeftSide(node) {
     node.type === "SequenceExpression" ||
     node.type === "TaggedTemplateExpression" ||
     node.type === "BindExpression" ||
-    (node.type === "UpdateExpression" && !node.prefix)
+    (node.type === "UpdateExpression" && !node.prefix) ||
+    node.type === "TSNonNullExpression"
   );
 }
 

tests/no-semi-typescript/__snapshots__/jsfmt.spec.js.snap

@@ -49,3 +49,25 @@ class A {
 }
 
 `;
+
+exports[`non-null.ts - typescript-verify 1`] = `
+// the 2nd line needs ASI protection
+const el = ReactDOM.findDOMNode(ref)
+;(el as HTMLElement)!.style.cursor = 'pointer'
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// the 2nd line needs ASI protection
+const el = ReactDOM.findDOMNode(ref);
+(el as HTMLElement)!.style.cursor = "pointer";
+
+`;
+
+exports[`non-null.ts - typescript-verify 2`] = `
+// the 2nd line needs ASI protection
+const el = ReactDOM.findDOMNode(ref)
+;(el as HTMLElement)!.style.cursor = 'pointer'
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// the 2nd line needs ASI protection
+const el = ReactDOM.findDOMNode(ref)
+;(el as HTMLElement)!.style.cursor = "pointer"
+
+`;

tests/no-semi-typescript/non-null.ts

@@ -0,0 +1,3 @@
+// the 2nd line needs ASI protection
+const el = ReactDOM.findDOMNode(ref)
+;(el as HTMLElement)!.style.cursor = 'pointer'