diff --git a/packages/gatsby/src/utils/worker/child.js b/packages/gatsby/src/utils/worker/child.js
index 4fee51c9bbe0f..d8f378a435058 100644
--- a/packages/gatsby/src/utils/worker/child.js
+++ b/packages/gatsby/src/utils/worker/child.js
@@ -1,5 +1,7 @@
 // Note: this doesn't check for conflicts between module exports
+import { getFilePath } from "./page-data"
+
 module.exports = {
-  ...require(`./page-data`),
+  getFilePath,
   ...require(`./render-html`),
 }
diff --git a/packages/gatsby/src/utils/worker/page-data.js b/packages/gatsby/src/utils/worker/page-data.ts
similarity index 52%
rename from packages/gatsby/src/utils/worker/page-data.js
rename to packages/gatsby/src/utils/worker/page-data.ts
index 83c4acf9b8b67..9aee01ea1e2c0 100644
--- a/packages/gatsby/src/utils/worker/page-data.js
+++ b/packages/gatsby/src/utils/worker/page-data.ts
@@ -1,10 +1,9 @@
-const path = require(`path`)
+import path from "path"
 
-const getFilePath = ({ publicDir }, pagePath) => {
+export const getFilePath = (
+  { publicDir }: { publicDir: string },
+  pagePath: string
+): string => {
   const fixedPagePath = pagePath === `/` ? `index` : pagePath
   return path.join(publicDir, `page-data`, fixedPagePath, `page-data.json`)
 }
-
-module.exports = {
-  getFilePath,
-}