Do not throw for unprinted comments inside of JSX (#2036)

Fixes #1990

src/comments.js

@@ -369,6 +369,13 @@ function addCommentHelper(node, comment) {
   const comments = node.comments || (node.comments = []);
   comments.push(comment);
   comment.printed = false;
+
+  // For some reason, TypeScript parses `// x` inside of JSXText as a comment
+  // We already "print" it via the raw text, we don't need to re-print it as a
+  // comment
+  if (node.type === "JSXText") {
+    comment.printed = true;
+  }
 }
 
 function addLeadingComment(node, comment) {

tests/typescript_comments/__snapshots__/jsfmt.spec.js.snap

@@ -21,6 +21,29 @@ abstract class AbstractRule {
 
 `;
 
+exports[`jsx.ts 1`] = `
+var example1 = <div>
+	https://test
+</div>;
+
+var example2 = <div>
+	/*test*/
+</div>;
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+var example1 = (
+  <div>
+    https://test
+  </div>
+);
+
+var example2 = (
+  <div>
+    /*test*/
+  </div>
+);
+
+`;
+
 exports[`types.ts 1`] = `
 (() => {
   // swallow error and fallback to using directory as path

tests/typescript_comments/jsx.ts

@@ -0,0 +1,7 @@
+var example1 = <div>
+	https://test
+</div>;
+
+var example2 = <div>
+	/*test*/
+</div>;