Workaround rollup-plugin-dts bug

packages/babel-traverse/src/visitors.ts

@@ -28,6 +28,12 @@ export function isExplodedVisitor(
   return visitor?._exploded;
 }
 
+// We need to name this function `explode$1` because otherwise rollup-plugin-dts
+// will generate a `namespace traverse { var explode: typeof explode; }` when
+// bundling @babel/traverse's index.d.ts.
+// TODO: Just call it `explode` once https://github.com/Swatinem/rollup-plugin-dts/issues/307
+// is fixed.
+export { explode$1 as explode };
 /**
  * explode() will take a visitor object with all of the various shorthands
  * that we support, and validates & normalizes it into a common format, ready
@@ -43,7 +49,7 @@ export function isExplodedVisitor(
  * * `enter` and `exit` functions are wrapped in arrays, to ease merging of
  *   visitors
  */
-export function explode<S>(visitor: Visitor<S>): ExplodedVisitor<S> {
+function explode$1<S>(visitor: Visitor<S>): ExplodedVisitor<S> {
   if (isExplodedVisitor(visitor)) return visitor;
   // @ts-expect-error `visitor` will be cast to ExplodedVisitor by this function
   visitor._exploded = true;
@@ -65,7 +71,7 @@ export function explode<S>(visitor: Visitor<S>): ExplodedVisitor<S> {
   }
 
   // verify data structure
-  verify(visitor);
+  verify$1(visitor);
 
   // make sure there's no __esModule type since this is because we're using loose mode
   // and it sets __esModule to be enumerable on all modules :(
@@ -157,7 +163,13 @@ export function explode<S>(visitor: Visitor<S>): ExplodedVisitor<S> {
   return visitor as ExplodedVisitor;
 }
 
-export function verify(visitor: Visitor) {
+// We need to name this function `verify$1` because otherwise rollup-plugin-dts
+// will generate a `namespace traverse { var verify: typeof verify; }` when
+// bundling @babel/traverse's index.d.ts.
+// TODO: Just call it `verify` once https://github.com/Swatinem/rollup-plugin-dts/issues/307
+// is fixed.
+export { verify$1 as verify };
+function verify$1(visitor: Visitor) {
   // @ts-expect-error _verified is not defined on non-verified Visitor.
   // TODO: unify _verified and _exploded.
   if (visitor._verified) return;
@@ -237,7 +249,7 @@ export function merge(
   const mergedVisitor: ExplodedVisitor = {};
 
   for (let i = 0; i < visitors.length; i++) {
-    const visitor = explode(visitors[i]);
+    const visitor = explode$1(visitors[i]);
     const state = states[i];
 
     let topVisitor: ExplVisitNode<unknown, Node> = visitor;