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-rw-r--r--lib/prism/parse_result.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/prism/parse_result.rb b/lib/prism/parse_result.rb
index c00059fbfe..9771da5314 100644
--- a/lib/prism/parse_result.rb
+++ b/lib/prism/parse_result.rb
@@ -286,6 +286,7 @@ module Prism
private
+ # Access the associated source, raising if not present.
def source!
source or raise "Missing source"
end