diff --git a/tsconfig.json b/tsconfig.json
index fe2b4f6..56402e7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -16,6 +16,10 @@
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "allowImportingTsExtensions": true,
+    // Even files without `import` or `export` are treated as modules.
+    // It helps to avoid mysterious errors such as `Cannot redeclare block-scoped variable 'name`.
+    // https://www.totaltypescript.com/cannot-redeclare-block-scoped-variable#solution-3-your-module-isnt-a-module
+    "moduleDetection": "force",
 
     // Required in Vue projects
     "jsx": "preserve",