diff --git a/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java b/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
index 9ea557e5..e2fb4515 100644
--- a/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
+++ b/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
@@ -212,6 +212,9 @@ public J visitJsBinary(JS.JsBinary binary, PrintOutputCapture<P> p) {
             case IdentityNotEquals:
                 keyword = "!==";
                 break;
+            case In:
+                keyword = "in";
+                break;
         }
 
         visitSpace(binary.getPadding().getOperator().getBefore(), JsSpace.Location.BINARY_PREFIX, p);
diff --git a/src/main/java/org/openrewrite/javascript/internal/TypeScriptParserVisitor.java b/src/main/java/org/openrewrite/javascript/internal/TypeScriptParserVisitor.java
index 7288174c..c6328756 100644
--- a/src/main/java/org/openrewrite/javascript/internal/TypeScriptParserVisitor.java
+++ b/src/main/java/org/openrewrite/javascript/internal/TypeScriptParserVisitor.java
@@ -290,13 +290,14 @@ private J.TypeCast visitAsExpression(TSCNode node) {
         );
     }
 
-    private J.Binary visitBinary(TSCNode node) {
+    private J visitBinary(TSCNode node) {
         Space prefix = whitespace();
         Markers markers = Markers.EMPTY;
         Expression left = (Expression) visitNode(node.getNodeProperty("left"));
 
         Space opPrefix = whitespace();
         JLeftPadded<J.Binary.Type> op = null;
+        JLeftPadded<JS.JsBinary.Type> jsOp = null;
         TSCSyntaxKind opKind = node.getNodeProperty("operatorToken").syntaxKind();
         switch (opKind) {
             // Bitwise ops
@@ -387,20 +388,38 @@ private J.Binary visitBinary(TSCNode node) {
                 consumeToken(TSCSyntaxKind.SlashToken);
                 op = padLeft(opPrefix, J.Binary.Type.Division);
                 break;
+            // TS/JS specific ops
+            case InKeyword:
+                consumeToken(TSCSyntaxKind.InKeyword);
+                jsOp = padLeft(opPrefix, JS.JsBinary.Type.In);
+                break;
             default:
                 implementMe(node);
         }
 
         Expression right = (Expression) visitNode(node.getNodeProperty("right"));
-        return new J.Binary(
-                randomId(),
-                prefix,
-                markers,
-                left,
-                op,
-                right,
-                typeMapping.type(node)
-        );
+
+        if (jsOp != null) {
+            return new JS.JsBinary(
+                    randomId(),
+                    prefix,
+                    markers,
+                    left,
+                    jsOp,
+                    right,
+                    typeMapping.type(node)
+            );
+        } else {
+            return new J.Binary(
+                    randomId(),
+                    prefix,
+                    markers,
+                    left,
+                    op,
+                    right,
+                    typeMapping.type(node)
+            );
+        }
     }
 
     private J visitBinaryExpression(TSCNode node) {
@@ -428,6 +447,7 @@ private J visitBinaryExpression(TSCNode node) {
             case GreaterThanEqualsToken:
             case GreaterThanGreaterThanToken:
             case GreaterThanGreaterThanGreaterThanToken:
+            case InKeyword:
             case LessThanToken:
             case LessThanEqualsToken:
             case LessThanLessThanToken:
diff --git a/src/main/java/org/openrewrite/javascript/tree/JS.java b/src/main/java/org/openrewrite/javascript/tree/JS.java
index 2d0208e9..cb14a7bf 100644
--- a/src/main/java/org/openrewrite/javascript/tree/JS.java
+++ b/src/main/java/org/openrewrite/javascript/tree/JS.java
@@ -895,7 +895,8 @@ public CoordinateBuilder.Expression getCoordinates() {
 
         public enum Type {
             IdentityEquals,
-            IdentityNotEquals
+            IdentityNotEquals,
+            In
         }
 
         public JS.JsBinary.Padding getPadding() {
diff --git a/src/main/java/org/openrewrite/javascript/tree/JsLeftPadded.java b/src/main/java/org/openrewrite/javascript/tree/JsLeftPadded.java
index 48352bbb..898437fc 100644
--- a/src/main/java/org/openrewrite/javascript/tree/JsLeftPadded.java
+++ b/src/main/java/org/openrewrite/javascript/tree/JsLeftPadded.java
@@ -15,7 +15,10 @@
  */
 package org.openrewrite.javascript.tree;
 
+import lombok.Getter;
+
 public class JsLeftPadded {
+    @Getter
     public enum Location {
         BINARY_OPERATOR(JsSpace.Location.BINARY_PREFIX),
         BINDING_INITIALIZER(JsSpace.Location.BINDING_INITIALIZER_PREFIX),
@@ -30,9 +33,5 @@ public enum Location {
         Location(JsSpace.Location beforeLocation) {
             this.beforeLocation = beforeLocation;
         }
-
-        public JsSpace.Location getBeforeLocation() {
-            return beforeLocation;
-        }
     }
 }
diff --git a/src/test/java/org/openrewrite/javascript/tree/BinaryTest.java b/src/test/java/org/openrewrite/javascript/tree/BinaryTest.java
index bf18fd74..d6f59da2 100644
--- a/src/test/java/org/openrewrite/javascript/tree/BinaryTest.java
+++ b/src/test/java/org/openrewrite/javascript/tree/BinaryTest.java
@@ -15,6 +15,7 @@
  */
 package org.openrewrite.javascript.tree;
 
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
 import org.openrewrite.Issue;
@@ -128,4 +129,16 @@ void identityEquals(String arg) {
           )
         );
     }
+
+    @Test
+    void in() {
+        rewriteRun(
+          javaScript(
+            """
+              let foo = { bar : 'v1' , buz : 'v2' }
+              var x = 'bar' in foo
+              """
+          )
+        );
+    }
 }
diff --git a/src/test/java/org/openrewrite/javascript/tree/TypeOperatorTest.java b/src/test/java/org/openrewrite/javascript/tree/TypeOperatorTest.java
index 398ae29d..20a5c779 100644
--- a/src/test/java/org/openrewrite/javascript/tree/TypeOperatorTest.java
+++ b/src/test/java/org/openrewrite/javascript/tree/TypeOperatorTest.java
@@ -24,19 +24,6 @@
 @SuppressWarnings("JSUnusedLocalSymbols")
 class TypeOperatorTest implements RewriteTest {
 
-    @ExpectedToFail
-    @Test
-    void in() {
-        rewriteRun(
-          javaScript(
-            """
-              let foo = { bar : 'v1' , buz : 'v2' }
-              v = 'bar' in foo
-              """
-          )
-        );
-    }
-
     @Test
     void delete() {
         rewriteRun(