diff --git a/rewrite-javascript/src/main/java/org/openrewrite/javascript/JavaScriptVisitor.java b/rewrite-javascript/src/main/java/org/openrewrite/javascript/JavaScriptVisitor.java
index d442b673..06d4160b 100644
--- a/rewrite-javascript/src/main/java/org/openrewrite/javascript/JavaScriptVisitor.java
+++ b/rewrite-javascript/src/main/java/org/openrewrite/javascript/JavaScriptVisitor.java
@@ -268,7 +268,6 @@ public J visitFunctionType(JS.FunctionType functionType, P p) {
         f = f.getPadding().withConstructorType(Objects.requireNonNull(visitLeftPadded(f.getPadding().getConstructorType(), JsLeftPadded.Location.FUNCTION_TYPE_CONSTRUCTOR, p)));
         f = f.withTypeParameters(visitAndCast(f.getTypeParameters(), p));
         f = f.getPadding().withParameters(Objects.requireNonNull(visitContainer(f.getPadding().getParameters(), JsContainer.Location.FUNCTION_TYPE_PARAMETERS, p)));
-        f = f.withParameters(Objects.requireNonNull(ListUtils.map(f.getParameters(), e -> visitAndCast(e, p))));
         f = f.getPadding().withReturnType((Objects.requireNonNull(visitLeftPadded(f.getPadding().getReturnType(), JsLeftPadded.Location.FUNCTION_TYPE_RETURN_TYPE, p))));
         f = f.withType(visitType(f.getType(), p));
         return f;
@@ -1042,7 +1041,7 @@ public J visitFunctionDeclaration(JS.FunctionDeclaration functionDeclaration, P
         f = f.getPadding().withAsteriskToken(Objects.requireNonNull(visitLeftPadded(f.getPadding().getAsteriskToken(), JsLeftPadded.Location.FUNCTION_DECLARATION_ASTERISK_TOKEN, p)));
         f = f.getPadding().withName(Objects.requireNonNull(visitLeftPadded(f.getPadding().getName(), JsLeftPadded.Location.FUNCTION_DECLARATION_NAME, p)));
         f = f.withTypeParameters(visitAndCast(f.getTypeParameters(), p));
-        f = f.getPadding().withParameters(Objects.requireNonNull(visitContainer(f.getPadding().getParameters(), JContainer.Location.METHOD_DECLARATION_PARAMETERS, p)));
+        f = f.getPadding().withParameters(Objects.requireNonNull(visitContainer(f.getPadding().getParameters(), JsContainer.Location.FUNCTION_DECLARATION_PARAMETERS, p)));
         f = f.withReturnTypeExpression(visitAndCast(f.getReturnTypeExpression(), p));
         f = f.withBody(visitAndCast(f.getBody(), p));
         f = f.withType(visitType(f.getType(), p));
diff --git a/rewrite-javascript/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java b/rewrite-javascript/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
index 4a49dce3..cde378b2 100644
--- a/rewrite-javascript/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
+++ b/rewrite-javascript/src/main/java/org/openrewrite/javascript/internal/JavaScriptPrinter.java
@@ -887,7 +887,7 @@ public J visitFunctionDeclaration(JS.FunctionDeclaration functionDeclaration, Pr
             p.append(">");
         }
 
-        visitContainer("(", functionDeclaration.getPadding().getParameters(), JsContainer.Location.JSMETHOD_DECLARATION_PARAMETERS, ",", ")", p);
+        visitContainer("(", functionDeclaration.getPadding().getParameters(), JsContainer.Location.FUNCTION_DECLARATION_PARAMETERS, ",", ")", p);
         if (functionDeclaration.getReturnTypeExpression() != null) {
             visit(functionDeclaration.getReturnTypeExpression(), p);
         }
diff --git a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsContainer.java b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsContainer.java
index 9ec658fe..0377bf85 100644
--- a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsContainer.java
+++ b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsContainer.java
@@ -23,6 +23,7 @@ public enum Location {
         ARRAY_LITERAL_EXPRESSION(JsSpace.Location.ARRAY_LITERAL_ELEMENTS, JsRightPadded.Location.ARRAY_LITERAL_ELEMENT_SUFFIX),
         BINDING_ELEMENT(JsSpace.Location.BINDING_ELEMENTS, JsRightPadded.Location.BINDING_ELEMENT),
         EXPORT_ELEMENT(JsSpace.Location.EXPORT_ELEMENTS, JsRightPadded.Location.EXPORT_ELEMENT_SUFFIX),
+        FUNCTION_DECLARATION_PARAMETERS(JsSpace.Location.FUNCTION_DECLARATION_PARAMETERS, JsRightPadded.Location.FUNCTION_DECLARATION_PARAMETERS_SUFFIX),
         FUNCTION_TYPE_PARAMETERS(JsSpace.Location.FUNCTION_TYPE_PARAMETERS, JsRightPadded.Location.FUNCTION_TYPE_PARAMETERS_SUFFIX),
         IMPORT_ELEMENT(JsSpace.Location.IMPORT_ELEMENTS, JsRightPadded.Location.IMPORT_ELEMENT_SUFFIX),
         TUPLE_ELEMENT(JsSpace.Location.TUPLE_ELEMENT, JsRightPadded.Location.TUPLE_ELEMENT_SUFFIX),
diff --git a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsRightPadded.java b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsRightPadded.java
index d0f3073f..0fd1f108 100644
--- a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsRightPadded.java
+++ b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsRightPadded.java
@@ -25,6 +25,7 @@ public enum Location {
         BINDING_ELEMENT(JsSpace.Location.BINDING_ELEMENT_SUFFIX),
         BINDING_ELEMENT_PROPERTY_NAME(JsSpace.Location.BINDING_ELEMENT_PROPERTY_NAME_SUFFIX),
         EXPORT_ELEMENT_SUFFIX(JsSpace.Location.EXPORT_ELEMENT_SUFFIX),
+        FUNCTION_DECLARATION_PARAMETERS_SUFFIX(JsSpace.Location.FUNCTION_DECLARATION_PARAMETERS_SUFFIX),
         FUNCTION_TYPE_PARAMETERS_SUFFIX(JsSpace.Location.FUNCTION_TYPE_PARAMETERS_SUFFIX),
         IMPORT_ELEMENT_SUFFIX(JsSpace.Location.IMPORT_ELEMENT_SUFFIX),
         IMPORT_NAME_SUFFIX(JsSpace.Location.IMPORT_NAME_SUFFIX),
diff --git a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsSpace.java b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsSpace.java
index ace1661f..c82972bd 100644
--- a/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsSpace.java
+++ b/rewrite-javascript/src/main/java/org/openrewrite/javascript/tree/JsSpace.java
@@ -143,6 +143,8 @@ public enum Location {
         EXPORT_ASSIGNMENT_EXPORT_EQUALS_PREFIX,
         FUNCTION_DECLARATION_NAME_PREFIX,
         FUNCTION_DECLARATION_ASTERISK_TOKEN_PREFIX,
+        FUNCTION_DECLARATION_PARAMETERS,
+        FUNCTION_DECLARATION_PARAMETERS_SUFFIX,
         INDEXED_ACCESS_TYPE_PREFIX,
         INDEXED_ACCESS_TYPE_INDEX_TYPE_SUFFIX,
         INDEXED_ACCESS_TYPE_INDEX_TYPE_PREFIX,