diff --git a/Extensions/.prettierrc b/Extensions/.prettierrc
new file mode 100644
index 0000000000..c1a6f66713
--- /dev/null
+++ b/Extensions/.prettierrc
@@ -0,0 +1,4 @@
+{
+  "singleQuote": true,
+  "trailingComma": "es5"
+}