make async equality collections sync iterables

src/async/impl.ts

@@ -1328,7 +1328,7 @@ export class DistinctByAsyncSequence<T, U> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1763,7 +1763,7 @@ export class UnionAsyncSequence<T> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1797,7 +1797,7 @@ export class UnionByAsyncSequence<T, U> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1827,7 +1827,7 @@ export class ExceptAsyncSequence<T> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1859,7 +1859,7 @@ export class ExceptByAsyncSequence<T, U> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1889,7 +1889,7 @@ export class IntersectAsyncSequence<T> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1921,7 +1921,7 @@ export class IntersectByAsyncSequence<T, U> extends BaseAsyncSequence<T> {
       }
     }
 
-    await set.clear();
+    set.clear();
   }
 }
 
@@ -1976,7 +1976,7 @@ export class GroupByAsyncSequence<TElement, TKey, TResult> extends BaseAsyncSequ
       grouping.push(await this.#elementSelector(obj));
     }
 
-    for await (const entry of groupings) {
+    for (const entry of groupings) {
       yield new GroupedAsyncSequenceImpl(entry[0], array(entry[1]));
     }
   }

src/equality-map.ts

@@ -1,5 +1,4 @@
 import { Equater, MaybeAsyncEquater } from "./types.js";
-import { asAsyncGenerator } from "./utils.js";
 
 export interface EqualityMap<K, V> extends Iterable<[K, V]> {
   readonly size: number;
@@ -149,12 +148,12 @@ export function createEqualityMap<K, V>(keyComparer?: Equater<K>): EqualityMap<K
   return keyComparer ? new CustomEqualityMap<K, V>(keyComparer) : new NativeEqualityMap<K, V>();
 }
 
-export interface AsyncEqualityMap<K, V> extends AsyncIterable<[K, V]> {
+export interface AsyncEqualityMap<K, V> extends Iterable<[K, V]> {
   get(key: K): Promise<V | undefined>;
   set(key: K, value: V): Promise<V | undefined>;
   contains(key: K): Promise<boolean>;
   remove(key: K): Promise<V | undefined>;
-  clear(): Promise<void>;
+  clear(): void;
 }
 
 class NativeAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
@@ -180,12 +179,12 @@ class NativeAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
     return existing;
   }
 
-  async clear() {
+  clear() {
     this.#map.clear();
   }
 
-  [Symbol.asyncIterator]() {
-    return asAsyncGenerator(this.#map[Symbol.iterator]());
+  [Symbol.iterator]() {
+    return this.#map[Symbol.iterator]();
   }
 }
 
@@ -242,12 +241,14 @@ class CustomAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
     return undefined;
   }
 
-  async clear() {
+  clear() {
     this.#list.length = 0;
   }
 
-  [Symbol.asyncIterator]() {
-    return asAsyncGenerator(this.#list[Symbol.iterator]());
+  *[Symbol.iterator]() {
+    for (const entry of this.#list) {
+      yield [entry[0], entry[1]] as [K, V]; // no entry mutation allowed!
+    }
   }
 }
 

src/equality-set.ts

@@ -1,5 +1,4 @@
 import { Equater, MaybeAsyncEquater } from "./types.js";
-import { asAsyncGenerator } from "./utils.js";
 
 export interface EqualitySet<T> extends Iterable<T> {
   readonly size: number;
@@ -106,12 +105,12 @@ export function createEqualitySet<T>(equater?: Equater<T>): EqualitySet<T> {
   return equater ? new CustomEqualitySet(equater) : new NativeEqualitySet<T>();
 }
 
-export interface AsyncEqualitySet<T> extends AsyncIterable<T> {
+export interface AsyncEqualitySet<T> extends Iterable<T> {
   readonly size: number;
   add(obj: T): Promise<boolean>;
   contains(obj: T): Promise<boolean>;
   remove(obj: T): Promise<boolean>;
-  clear(): Promise<void>;
+  clear(): void;
 }
 
 class NativeAsyncEqualitySet<T> implements AsyncEqualitySet<T> {
@@ -135,12 +134,12 @@ class NativeAsyncEqualitySet<T> implements AsyncEqualitySet<T> {
     return this.#set.delete(obj);
   }
 
-  async clear() {
+  clear() {
     this.#set.clear();
   }
 
-  [Symbol.asyncIterator]() {
-    return asAsyncGenerator(this.#set[Symbol.iterator]());
+  [Symbol.iterator]() {
+    return this.#set[Symbol.iterator]();
   }
 }
 
@@ -189,12 +188,12 @@ class CustomAsyncEqualitySet<T> implements AsyncEqualitySet<T> {
     return false;
   }
 
-  async clear() {
+  clear() {
     this.#list.length = 0;
   }
 
-  [Symbol.asyncIterator]() {
-    return asAsyncGenerator(this.#list[Symbol.iterator]());
+  [Symbol.iterator]() {
+    return this.#list[Symbol.iterator]();
   }
 }