add get.setResult, which can be used to call a Atom.fn inside an atom context

Author: tim-smart

.changeset/cuddly-carrots-play.md

@@ -0,0 +1,8 @@
+---
+"@effect-atom/atom": patch
+"@effect-atom/atom-livestore": patch
+"@effect-atom/atom-react": patch
+"@effect-atom/atom-vue": patch
+---
+
+add get.setResult, which can be used to call a Atom.fn inside an atom context

packages/atom/src/Atom.ts

@@ -140,6 +140,7 @@ export interface Context {
   self<A>(this: Context): Option.Option<A>
   setSelf<A>(this: Context, a: A): void
   set<R, W>(this: Context, atom: Writable<R, W>, value: W): void
+  setResult<A, E, W>(this: Context, atom: Writable<Result.Result<A, E>, W>, value: W): Effect.Effect<A, E>
   some<A>(this: Context, atom: Atom<Option.Option<A>>): Effect.Effect<A>
   someOnce<A>(this: Context, atom: Atom<Option.Option<A>>): Effect.Effect<A>
   stream<A>(this: Context, atom: Atom<A>, options?: {
@@ -983,6 +984,7 @@ export interface FnContext {
   self<A>(this: FnContext): Option.Option<A>
   setSelf<A>(this: FnContext, a: A): void
   set<R, W>(this: FnContext, atom: Writable<R, W>, value: W): void
+  setResult<A, E, W>(this: Context, atom: Writable<Result.Result<A, E>, W>, value: W): Effect.Effect<A, E>
   some<A>(this: FnContext, atom: Atom<Option.Option<A>>): Effect.Effect<A>
   stream<A>(this: FnContext, atom: Atom<A>, options?: {
     readonly withoutInitialValue?: boolean

packages/atom/src/internal/registry.ts

@@ -578,6 +578,14 @@ const LifetimeProto: Omit<Lifetime<any>, "node" | "finalizers" | "disposed" | "i
     })
   },
 
+  setResult<A, E, W>(this: Lifetime<any>, atom: Atom.Writable<Result.Result<A, E>, W>, value: W): Effect.Effect<A, E> {
+    if (this.disposed) {
+      throw disposedError(this.node.atom)
+    }
+    this.node.registry.set(atom, value)
+    return this.resultOnce(atom, { suspendOnWaiting: true })
+  },
+
   some<A>(this: Lifetime<any>, atom: Atom.Atom<Option.Option<A>>): Effect.Effect<A> {
     if (this.disposed) {
       throw disposedError(this.node.atom)