diff --git a/.gitignore b/.gitignore
index 4714d2b87d70d..3eac5f0130cf2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ ID
 .DS_Store*
 *.pdb
 *.egg-info
+.eslintcache
 # Filesystem temporaries
 .fuse_hidden*
 
diff --git a/.hgignore b/.hgignore
index 831d844896f7b..181560240d24e 100644
--- a/.hgignore
+++ b/.hgignore
@@ -8,6 +8,7 @@
 (^|/)\.DS_Store$
 \.pdb
 \.egg-info
+\.eslintcache
 \.gcda
 \.gcno
 \.gcov
@@ -40,9 +41,6 @@ compile_commands\.json
 ^gecko\.log
 
 # Ignore newtab component build assets
-^browser/components/newtab/bin/prerender.js
-^browser/components/newtab/bin/prerender.js.map
-^browser/components/newtab/data/locales.json
 ^browser/components/newtab/logs/
 
 # Build directories for js shell
diff --git a/tools/rewriting/ThirdPartyPaths.txt b/tools/rewriting/ThirdPartyPaths.txt
index 3c51f13f0b14e..e54bb623f3203 100644
--- a/tools/rewriting/ThirdPartyPaths.txt
+++ b/tools/rewriting/ThirdPartyPaths.txt
@@ -1,3 +1,4 @@
+browser/components/newtab/node_modules/
 browser/components/newtab/vendor/
 browser/components/translation/cld2/
 browser/extensions/screenshots/build/raven.js