From 497ae630ed41e0e0857cd4a6078cce892f536be6 Mon Sep 17 00:00:00 2001
From: Joe Lencioni <joe.lencioni@airbnb.com>
Date: Thu, 23 Aug 2018 11:26:11 -0700
Subject: [PATCH] Replace Set with WeakSet for collecting removed paths

This contains objects and is never traversed, so we might be able to
help free us some memory by using a WeakSet here instead of a Set.
---
 src/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 5902dfb..1bbc98e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -69,7 +69,7 @@ export default function(api) {
   const { template, types, traverse } = api
 
   const nestedIdentifiers = new Set()
-  const removedPaths = new Set()
+  const removedPaths = new WeakSet()
   const collectNestedIdentifiers = {
     Identifier(path) {
       if (path.parent.type === 'MemberExpression') {