fix Chunk uniq

Effect-TS · Apr 4, 2022 · c8cb091 · c8cb091
1 parent fde9c1f
commit c8cb091
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diff --git a/packages/core/src/Collections/Immutable/Chunk/operations.ts b/packages/core/src/Collections/Immutable/Chunk/operations.ts
@@ -318,7 +318,7 @@ export function uniq_<A>(as: Chunk.Chunk<A>, E: Equal<A>): Chunk.Chunk<A> {
   const len = as.length
   let i = 0
   for (; i < len; i++) {
-    const a = as[i]!
+    const a = Chunk.unsafeGet_(as, i)
     if (!elem_(r, E, a)) {
       r = Chunk.append_(r, a)
     }

diff --git a/packages/core/test/chunk.test.ts b/packages/core/test/chunk.test.ts
@@ -0,0 +1,11 @@
+import { pipe } from "@effect-ts/core/Function"
+import { Chunk, Equal } from "@effect-ts/core/index.js"
+
+it("should uniq", () => {
+  const res = pipe(
+    Chunk.from(["a", "b", "a", "c", "c"]),
+    Chunk.uniq(Equal.string),
+    Chunk.toArray
+  )
+  expect(res).toEqual(["a", "b", "c"])
+})