From dc4ac7742690f8f2bd759d57108ac4455e717fe9 Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <me@liz.coffee>
Date: Sun, 20 Jul 2025 13:03:39 -0700
Subject: Mount src directory from path on host running worker container

---
 u/types/fn/optional.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'u/types/fn/optional.ts')

diff --git a/u/types/fn/optional.ts b/u/types/fn/optional.ts
index 3396a45..504e496 100644
--- a/u/types/fn/optional.ts
+++ b/u/types/fn/optional.ts
@@ -1,4 +1,4 @@
-import { type Mapper, type Supplier, Tagged, isTagged } from '@emprespresso/pengueno';
+import { type Mapper, Predicate, type Supplier, Tagged, isTagged } from '@emprespresso/pengueno';
 
 export type MaybeGiven<T> = T | undefined | null;
 
@@ -9,7 +9,7 @@ export class IOptionalEmptyError extends Error {}
 export interface IOptional<t, T extends NonNullable<t> = NonNullable<t>> extends Tagged<IOptionalTag>, Iterable<T> {
     readonly move: <_T>(t: MaybeGiven<_T>) => IOptional<_T>;
     readonly map: <_T>(mapper: Mapper<T, MaybeGiven<_T>>) => IOptional<_T>;
-    readonly filter: (mapper: Mapper<T, boolean>) => IOptional<T>;
+    readonly filter: (mapper: Predicate<T>) => IOptional<T>;
     readonly flatMap: <_T>(mapper: Mapper<T, MaybeGiven<IOptional<_T>>>) => IOptional<_T>;
     readonly orSome: (supplier: Supplier<MaybeGiven<t>>) => IOptional<T>;
     readonly get: Supplier<T>;
@@ -48,11 +48,11 @@ export class Optional<t, T extends NonNullable<t> = NonNullable<t>> extends _Tag
     }
 
     public get(): T {
-        if (isNone(this.self)) throw new IOptionalEmptyError('empty value');
+        if (isNone(this.self)) throw new IOptionalEmptyError('called get() on None optional');
         return this.self.value;
     }
 
-    public filter(mapper: Mapper<T, boolean>): IOptional<T> {
+    public filter(mapper: Predicate<T>): IOptional<T> {
         if (isNone(this.self) || !mapper(this.self.value)) return Optional.none();
         return Optional.some(this.self.value);
     }
-- 
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