diff --git a/README.md b/README.md
index e552f16..ac9b886 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,9 @@ module.exports = {
 };
 ```
 
+If you are using TS, it's possible that ESLint will complain about `.js` files not being present in the project. This
+can likely be fixed by adding `"allowJs": true` to the `tsconfig.json` file.
+
 ### Linting commands
 
 We recommend using the following linting commands inside `package.json` scripts: