diff --git a/packages/babel-helper-member-expression-to-functions/src/index.ts b/packages/babel-helper-member-expression-to-functions/src/index.ts
index efaf7293366c..436c61c43e38 100644
--- a/packages/babel-helper-member-expression-to-functions/src/index.ts
+++ b/packages/babel-helper-member-expression-to-functions/src/index.ts
@@ -215,9 +215,12 @@ const handle = {
         );
       }
 
+      // @ts-expect-error isOptionalMemberExpression does not work with NodePath union
       const startingNode = startingOptional.isOptionalMemberExpression()
-        ? startingOptional.node.object
-        : startingOptional.node.callee;
+        ? // @ts-expect-error isOptionalMemberExpression does not work with NodePath union
+          startingOptional.node.object
+        : // @ts-expect-error isOptionalMemberExpression does not work with NodePath union
+          startingOptional.node.callee;
       const baseNeedsMemoised = scope.maybeGenerateMemoised(startingNode);
       const baseRef = baseNeedsMemoised ?? startingNode;
 
diff --git a/packages/babel-helpers/src/index.ts b/packages/babel-helpers/src/index.ts
index cf8c3c28601e..64098b7c20c3 100644
--- a/packages/babel-helpers/src/index.ts
+++ b/packages/babel-helpers/src/index.ts
@@ -59,6 +59,7 @@ function getHelperMetadata(file: File): HelperMetadata {
       }
       if (
         child.get("specifiers").length !== 1 ||
+        // @ts-expect-error isImportDefaultSpecifier does not work with NodePath union
         !child.get("specifiers.0").isImportDefaultSpecifier()
       ) {
         throw child.buildCodeFrameError(
diff --git a/packages/babel-plugin-proposal-optional-chaining/src/transform.ts b/packages/babel-plugin-proposal-optional-chaining/src/transform.ts
index 313d5206cb12..e9c693592927 100644
--- a/packages/babel-plugin-proposal-optional-chaining/src/transform.ts
+++ b/packages/babel-plugin-proposal-optional-chaining/src/transform.ts
@@ -37,6 +37,7 @@ function needsMemoize(
   ) {
     const { node } = optionalPath;
     const childPath = skipTransparentExprWrappers(
+      // @ts-expect-error isOptionalMemberExpression does not work with NodePath union
       optionalPath.isOptionalMemberExpression()
         ? optionalPath.get("object")
         : optionalPath.get("callee"),
@@ -87,7 +88,7 @@ export function transform(
     if (node.optional) {
       optionals.push(node);
     }
-
+    // @ts-expect-error isOptionalMemberExpression does not work with NodePath union
     if (optionalPath.isOptionalMemberExpression()) {
       // @ts-expect-error todo(flow->ts) avoid changing more type
       optionalPath.node.type = "MemberExpression";