Move extensions configuration to webpack.config.js

config/webpack/webpack.config.js

@@ -0,0 +1,10 @@
+const { generateWebpackConfig } = require("@rails/webpacker")
+
+const options = {
+  resolve: {
+    extensions: [".mjs", ".js", ".sass",".scss", ".css", ".module.sass", ".module.scss", ".module.css", ".png", ".svg", ".gif", ".jpeg", ".jpg", ".eot", ".ttf", ".woff"]
+  }
+}
+
+// This results in a new object copied from the mutable global
+module.exports = generateWebpackConfig(options)

config/webpacker.yml

@@ -39,24 +39,6 @@ default: &default
     - .woff
     - .woff2
 
-  extensions:
-    - .mjs
-    - .js
-    - .sass
-    - .scss
-    - .css
-    - .module.sass
-    - .module.scss
-    - .module.css
-    - .png
-    - .svg
-    - .gif
-    - .jpeg
-    - .jpg
-    - .eot
-    - .ttf
-    - .woff
-
 development:
   <<: *default
   compile: true