From 8430b4ddf6787e8b148e8969003a9a7e2e3d5271 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julien=20Valverd=C3=A9?= <julien.valverde@mailo.com>
Date: Mon, 23 Mar 2026 21:19:45 +0100
Subject: [PATCH] Tests

---
 packages/effect-fc/src/Lens.ts | 32 +++++++++-----------------------
 1 file changed, 9 insertions(+), 23 deletions(-)

diff --git a/packages/effect-fc/src/Lens.ts b/packages/effect-fc/src/Lens.ts
index 0653ad2..45779eb 100644
--- a/packages/effect-fc/src/Lens.ts
+++ b/packages/effect-fc/src/Lens.ts
@@ -1,4 +1,4 @@
-import { Array, Chunk, Effect, flow, Option, Pipeable, Predicate, Readable, Stream, Subscribable, SubscriptionRef } from "effect"
+import { Chunk, Effect, Pipeable, Predicate, Readable, Stream, Subscribable, SubscriptionRef } from "effect"
 
 
 export const LensTypeId: unique symbol = Symbol.for("@effect-fc/Lens/Lens")
@@ -74,32 +74,21 @@ export const fromSubscriptionRef = <A>(
 export const map = <A, ER, RR, EW, RW, B>(
     self: Lens<A, ER, RR, EW, RW>,
     get: (a: NoInfer<A>) => B,
-    set: {
-        (b: B): (parent: NoInfer<A>) => NoInfer<A>
-        (parent: NoInfer<A>, b: B): NoInfer<A>
-    },
+    set: (a: NoInfer<A>, b: B) => NoInfer<A>,
 ): Lens<B, ER, RR, EW, RW> => make({
     get get() { return Effect.map(self.get, get) },
     get changes() { return Stream.map(self.changes, get) },
     modify: <C, E1 = never, R1 = never>(
         f: (b: B) => Effect.Effect<readonly [C, B], E1, R1>
     ) => self.modify(a =>
-        Effect.flatMap(f(get(a)), ([c, next]) => Effect.succeed([
-            c,
-            set.length >= 2
-                ? (set as (parent: A, b: B) => A)(a, next)
-                : (set as (b: B) => (parent: A) => A)(next)(a),
-        ]))
+        Effect.flatMap(f(get(a)), ([c, next]) => Effect.succeed([c, set(a, next)]))
     ),
 })
 
 export const mapEffect = <A, ER, RR, EW, RW, B, EGet = never, RGet = never, ESet = never, RSet = never>(
     self: Lens<A, ER, RR, EW, RW>,
     get: (a: NoInfer<A>) => Effect.Effect<B, EGet, RGet>,
-    set: {
-        (b: B): (parent: NoInfer<A>) => Effect.Effect<NoInfer<A>, ESet, RSet>
-        (parent: NoInfer<A>, b: B): Effect.Effect<NoInfer<A>, ESet, RSet>
-    },
+    set: (a: NoInfer<A>, b: B) => Effect.Effect<NoInfer<A>, ESet, RSet>,
 ): Lens<B, ER | EGet, RR | RGet, EW | ESet, RW | RSet> => make({
     get get() { return Effect.flatMap(self.get, get) },
     get changes() { return Stream.mapEffect(self.changes, get) },
@@ -110,9 +99,7 @@ export const mapEffect = <A, ER, RR, EW, RW, B, EGet = never, RGet = never, ESet
         b => Effect.flatMap(
             f(b),
             ([c, bNext]) => Effect.flatMap(
-                set.length >= 2
-                    ? (set as (parent: A, b: B) => Effect.Effect<A, ESet, RSet>)(a, bNext)
-                    : (set as (b: B) => (parent: A) => Effect.Effect<A, ESet, RSet>)(bNext)(a),
+                set(a, bNext),
                 nextA => Effect.succeed([c, nextA] as const),
             ),
         )
@@ -131,13 +118,12 @@ export const unwrap = <A, ER, RR, EW, RW, E1, R1>(
 
 
 Effect.gen(function*() {
-    const myArrayRef = yield* SubscriptionRef.make([12, 38, 69])
-    const myArrayLens = fromSubscriptionRef(myArrayRef)
-    const arrayValueLens = map(myArrayLens, flow(Array.get(1), Option.getOrThrow), (a, b) => Array.replace(a, 1, b))
-
-    const myChunkRef = yield* SubscriptionRef.make(Chunk.make([12, 38, 69]))
+    const myChunkRef = yield* SubscriptionRef.make(Chunk.make(12, 38, 69) as Chunk.Chunk<number>)
     const myChunkLens = fromSubscriptionRef(myChunkRef)
     const chunkValueLens = mapEffect(myChunkLens, Chunk.get(1), (a, b) => Effect.succeed(Chunk.replace(a, 1, b)))
+
+    console.log(yield* myChunkRef.get)
+    console.log(yield* chunkValueLens.get)
 }).pipe(
     Effect.runSync
 )