From 5a303202529bfea40b29e5c6b43fe3879e440753 Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <me@liz.coffee>
Date: Thu, 31 Jul 2025 22:27:55 -0700
Subject: Adds JSON datatypes from advent of code utils

---
 lib/types/collections/index.ts  |  1 +
 lib/types/collections/jsonds.ts | 62 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 lib/types/collections/jsonds.ts

diff --git a/lib/types/collections/index.ts b/lib/types/collections/index.ts
index 8a12ad8..7b968fe 100644
--- a/lib/types/collections/index.ts
+++ b/lib/types/collections/index.ts
@@ -1 +1,2 @@
 export * from './cons';
+export * from './jsonds';
diff --git a/lib/types/collections/jsonds.ts b/lib/types/collections/jsonds.ts
new file mode 100644
index 0000000..2bfaeee
--- /dev/null
+++ b/lib/types/collections/jsonds.ts
@@ -0,0 +1,62 @@
+export class JSONSet<T extends Object> {
+    constructor(private readonly items: Set<string> = new Set()) {}
+
+    public add(item: T): void {
+        const itemJson = JSON.stringify(item, Object.keys(item).sort());
+        this.items.add(itemJson);
+    }
+
+    public has(item: T): boolean {
+        const itemJson = JSON.stringify(item, Object.keys(item).sort());
+        return this.items.has(itemJson);
+    }
+
+    public delete(item: T): boolean {
+        const itemJson = JSON.stringify(item, Object.keys(item).sort());
+        return this.items.delete(itemJson);
+    }
+
+    public clear(): void {
+        this.items.clear();
+    }
+
+    public size(): number {
+        return this.items.size;
+    }
+}
+
+export class JSONHashMap<T extends Object, R extends Object> {
+    constructor(private readonly map: Map<string, R> = new Map()) {}
+
+    public set(key: T, value: R): void {
+        const keyJson = JSON.stringify(key, Object.keys(key).sort());
+        this.map.set(keyJson, value);
+    }
+
+    public get(key: T): R | undefined {
+        const keyJson = JSON.stringify(key, Object.keys(key).sort());
+        return this.map.get(keyJson);
+    }
+
+    public has(key: T): boolean {
+        const keyJson = JSON.stringify(key, Object.keys(key).sort());
+        return this.map.has(keyJson);
+    }
+
+    public keys(): T[] {
+        return Array.from(this.map.keys()).map((x) => JSON.parse(x) as T);
+    }
+
+    public delete(key: T): boolean {
+        const keyJson = JSON.stringify(key, Object.keys(key).sort());
+        return this.map.delete(keyJson);
+    }
+
+    public clear(): void {
+        this.map.clear();
+    }
+
+    public size(): number {
+        return this.map.size;
+    }
+}
-- 
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