diff --git a/.changeset/fix-start-build-artifacts.md b/.changeset/fix-start-build-artifacts.md
new file mode 100644
index 0000000000..1ed066ed97
--- /dev/null
+++ b/.changeset/fix-start-build-artifacts.md
@@ -0,0 +1,6 @@
+---
+"@patternfly/elements": patch
+---
+
+`npm run start` no longer fails when TypeScript build artifacts
+are present in the working tree.
diff --git a/tsconfig.esbuild.json b/tsconfig.esbuild.json
index 3908160c9b..6602c4ee5f 100644
--- a/tsconfig.esbuild.json
+++ b/tsconfig.esbuild.json
@@ -9,7 +9,16 @@
     "**/demo/*.d.ts",
     "**/_temp/**/*",
     "**/*.story.*",
-    "**/test/*_e2e*"
+    "**/test/*_e2e*",
+    "elements/**/*.js",
+    "elements/**/*.d.ts",
+    "elements/**/*.js.map",
+    "core/**/*.js",
+    "core/**/*.d.ts",
+    "core/**/*.js.map",
+    "tools/**/*.js",
+    "tools/**/*.d.ts",
+    "tools/**/*.js.map"
   ],
   "compilerOptions": {
     "allowJs": true,