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-rw-r--r--lib/webpacker/manifest_extensions.rb17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/webpacker/manifest_extensions.rb b/lib/webpacker/manifest_extensions.rb
new file mode 100644
index 000000000..789eb81cc
--- /dev/null
+++ b/lib/webpacker/manifest_extensions.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module Webpacker::ManifestExtensions
+  def lookup(name, pack_type = {})
+    asset = super
+
+    if pack_type[:with_integrity] && asset.respond_to?(:dig)
+      [asset.dig('src'), asset.dig('integrity')]
+    elsif asset.respond_to?(:dig)
+      asset.dig('src')
+    else
+      asset
+    end
+  end
+end
+
+Webpacker::Manifest.prepend(Webpacker::ManifestExtensions)