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-rw-r--r--src/prelude/relation.ts5
1 files changed, 0 insertions, 5 deletions
diff --git a/src/prelude/relation.ts b/src/prelude/relation.ts
deleted file mode 100644
index 1f4703f52f..0000000000
--- a/src/prelude/relation.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-export type Predicate<T> = (a: T) => boolean;
-
-export type Relation<T, U> = (a: T, b: U) => boolean;
-
-export type EndoRelation<T> = Relation<T, T>;