diff --git a/pkg/nodejs/@datasworn/core/dist/Id/Utils.d.ts b/pkg/nodejs/@datasworn/core/dist/Id/Utils.d.ts
index b61da5e83..5fdf81e8f 100644
--- a/pkg/nodejs/@datasworn/core/dist/Id/Utils.d.ts
+++ b/pkg/nodejs/@datasworn/core/dist/Id/Utils.d.ts
@@ -85,4 +85,6 @@ export type ExtractAncestorCollectionPathElements<T extends Strings.RecursiveCol
     ...infer U extends Strings.CollectionAncestorKeys,
     string
 ] ? U : never;
+export type Last<T extends unknown[]> = T extends [infer U] ? U : T extends [...T[number][], infer U] ? U : never;
+export type DropLast<T extends unknown[]> = T extends [T[number]] ? [] : T extends [...infer U extends T[number][], T[number]] ? U : never;
 export type { AnyCollectionType as AnyCollection, AnyCollectableType as AnyCollectable, NonCollectableType as AnyNonCollectable } from './TypeMaps.js';
diff --git a/pkg/nodejs/@datasworn/core/dist/Id/test.js b/pkg/nodejs/@datasworn/core/dist/Id/test.js
index 8d635ea18..7f57ab5fc 100644
--- a/pkg/nodejs/@datasworn/core/dist/Id/test.js
+++ b/pkg/nodejs/@datasworn/core/dist/Id/test.js
@@ -1,17 +1,21 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 const IdParser_js_1 = require("../IdParser.js");
-const recursiveCollectionId = 'sundered_isles/collections/oracles/core';
-const recursiveCollectableId = 'sundered_isles/oracles/core/action';
-const nonRecursiveCollectionId = 'starforged/collections/moves/combat';
-const nonRecursiveCollectableId = 'starforged/moves/combat/strike';
-const nonCollectableId = 'delve/site_themes/hallowed';
-const testParse = [
-    IdParser_js_1.IdParser.from(recursiveCollectableId),
-    IdParser_js_1.IdParser.from(nonRecursiveCollectionId),
-    IdParser_js_1.IdParser.from(recursiveCollectionId),
-    IdParser_js_1.IdParser.from(nonRecursiveCollectableId),
-    IdParser_js_1.IdParser.from(nonCollectableId)
-];
-for (const id of testParse)
+const recursiveCollectionString = 'sundered_isles/collections/oracles/core';
+const recursiveCollectableString = 'sundered_isles/oracles/core/action';
+const nonRecursiveCollectionString = 'starforged/collections/moves/combat';
+const nonRecursiveCollectableString = 'starforged/moves/combat/strike';
+const nonCollectableString = 'delve/site_themes/hallowed';
+const recursiveCollectableId = IdParser_js_1.IdParser.from(recursiveCollectableString);
+const nonRecursiveCollectionId = IdParser_js_1.IdParser.from(nonRecursiveCollectionString);
+const recursiveCollectionId = IdParser_js_1.IdParser.from(recursiveCollectionString);
+const nonRecursiveCollectableId = IdParser_js_1.IdParser.from(nonRecursiveCollectableString);
+const nonCollectableId = IdParser_js_1.IdParser.from(nonCollectableString);
+for (const id of [
+    recursiveCollectableId,
+    recursiveCollectionId,
+    nonRecursiveCollectableId,
+    nonRecursiveCollectionId,
+    nonCollectableId
+])
     console.log(id.toString(), id.toPath().join('.'));
diff --git a/pkg/nodejs/@datasworn/core/dist/IdParser.d.ts b/pkg/nodejs/@datasworn/core/dist/IdParser.d.ts
index 9ffb4b994..2753d7e1b 100644
--- a/pkg/nodejs/@datasworn/core/dist/IdParser.d.ts
+++ b/pkg/nodejs/@datasworn/core/dist/IdParser.d.ts
@@ -4,7 +4,7 @@ import ObjectGlobber from './ObjectGlobPath/ObjectGlobber.js';
 import type * as Strings from './Id/Strings.js';
 import { type CollectableType, type CollectionSubtype, type TypeForTypeComposite } from './Id/TypeMaps.js';
 import type * as Utils from './Id/Utils.js';
-type DataswornTree = Record<string, Datasworn.RulesPackage> | Map<string, Datasworn.RulesPackage>;
+export type DataswornTree = Record<string, Datasworn.RulesPackage> | Map<string, Datasworn.RulesPackage>;
 /**
  * Creates, parses, and locates Datasworn IDs in the Datasworn tree. Id utilities are collected here as static methods.
  * @see
@@ -159,8 +159,6 @@ declare namespace IdParser {
     };
     type ToStringArray<RulesPackage extends string, TypeKeys extends Utils.AnyTypeKeys, PathKeys extends Utils.AnyPathKeys> = [RulesPackage, ...TypeKeys, ...PathKeys];
     type ToString<RulesPackage extends string, TypeKeys extends Utils.AnyTypeKeys, PathKeys extends Utils.AnyPathKeys> = Utils.Join<ToStringArray<RulesPackage, TypeKeys, PathKeys>, CONST.Sep>;
-    type Last<T extends unknown[]> = T extends [infer U] ? U : T extends [...T[number][], infer U] ? U : never;
-    type DropLast<T extends unknown[]> = T extends [T[number]] ? [] : T extends [...infer U extends T[number][], T[number]] ? U : never;
     type AnyParsedId = IdParser.Parsed<Strings.AnyCollectableId> | IdParser.Parsed<Strings.AnyCollectionId> | IdParser.Parsed<Strings.NonCollectableId>;
 }
 declare abstract class CollectionId<RulesPackage extends string = string, Subtype extends TypeElements.Collectable.Any = TypeElements.Collectable.Any, AncestorKeys extends Strings.DictKey[] | [] = Strings.DictKey[], Key extends Strings.DictKey = Strings.DictKey> extends IdParser<RulesPackage, [
@@ -325,7 +323,7 @@ interface RecursiveCollectableId<RulesPackage extends string = string, Type exte
     get ancestorCollectionKeys(): AncestorKeys;
 }
 declare namespace RecursiveCollectableId {
-    type FromString<T extends Strings.RecursiveCollectableId> = T extends `${infer RulesPackage}${CONST.Sep}${infer Type extends TypeElements.Collectable.Recursive}${infer AncestorPath extends `${CONST.Sep}${string}`}${CONST.Sep}${infer Key}` ? RecursiveCollectableId<RulesPackage, Type, Utils.Split<AncestorPath>, Key> & {
+    type FromString<T extends Strings.RecursiveCollectableId> = T extends `${infer RulesPackage}${CONST.Sep}${infer Type extends TypeElements.Collectable.Recursive}${CONST.Sep}${string}` ? RecursiveCollectableId<RulesPackage, Type, Utils.ExtractAncestorPathElements<T>, Utils.ExtractKey<T>> & {
         id: T;
     } : never;
 }
@@ -350,7 +348,7 @@ declare class RecursiveCollectionId<RulesPackage extends string = string, Subtyp
     /**
      * Returns a new {@link RecursiveCollectionId} instance for the ID of this object's parent RecursiveCollection, if one exists.
      */
-    getParentCollectionId(): AncestorKeys extends [] ? never : RecursiveCollectionId<RulesPackage, Subtype, IdParser.DropLast<AncestorKeys>, IdParser.Last<AncestorKeys>>;
+    getParentCollectionId(): AncestorKeys extends [] ? never : RecursiveCollectionId<RulesPackage, Subtype, Utils.DropLast<AncestorKeys>, Utils.Last<AncestorKeys>>;
     get canHaveCollectionChild(): AncestorKeys extends string[] & {
         length: 1 | 2;
     } ? true : false;
diff --git a/src/pkg-core/Id/Utils.ts b/src/pkg-core/Id/Utils.ts
index 7810fcc1d..3bb3e84fc 100644
--- a/src/pkg-core/Id/Utils.ts
+++ b/src/pkg-core/Id/Utils.ts
@@ -437,6 +437,19 @@ export type ExtractAncestorCollectionPathElements<
 	? U
 	: never
 
+export type Last<T extends unknown[]> = T extends [infer U]
+	? U
+	: T extends [...T[number][], infer U]
+	  ? U
+	  : never
+
+export type DropLast<T extends unknown[]> = T extends [T[number]]
+	? []
+	: T extends [...infer U extends T[number][], T[number]]
+	  ? U
+	  : never
+
+
 type fff = ExtractAncestorPathElements<'sundered_isles/oracles/core/action'>
 
 export type {
diff --git a/src/pkg-core/Id/test.ts b/src/pkg-core/Id/test.ts
index bdc7d96da..576884252 100644
--- a/src/pkg-core/Id/test.ts
+++ b/src/pkg-core/Id/test.ts
@@ -1,23 +1,30 @@
 import type * as Strings from './Strings.js'
 import { IdParser } from '../IdParser.js'
 
-const recursiveCollectionId =
+const recursiveCollectionString =
 	'sundered_isles/collections/oracles/core' satisfies Strings.RecursiveCollectionId
-const recursiveCollectableId =
+const recursiveCollectableString =
 	'sundered_isles/oracles/core/action' satisfies Strings.RecursiveCollectableId
-const nonRecursiveCollectionId =
+const nonRecursiveCollectionString =
 	'starforged/collections/moves/combat' satisfies Strings.NonRecursiveCollectionId
-const nonRecursiveCollectableId =
+const nonRecursiveCollectableString =
 	'starforged/moves/combat/strike' satisfies Strings.NonRecursiveCollectableId
-const nonCollectableId =
+const nonCollectableString =
 	'delve/site_themes/hallowed' satisfies Strings.NonCollectableId
-const testParse = [
-	IdParser.from(recursiveCollectableId),
-	IdParser.from(nonRecursiveCollectionId),
-	IdParser.from(recursiveCollectionId),
-	IdParser.from(nonRecursiveCollectableId),
-	IdParser.from(nonCollectableId)
-]
 
-for (const id of testParse) console.log(id.toString(), id.toPath().join('.'))
+const recursiveCollectableId = IdParser.from(recursiveCollectableString)
 
+const nonRecursiveCollectionId = IdParser.from(nonRecursiveCollectionString)
+const recursiveCollectionId = IdParser.from(recursiveCollectionString)
+
+const nonRecursiveCollectableId = IdParser.from(nonRecursiveCollectableString)
+const nonCollectableId = IdParser.from(nonCollectableString)
+
+for (const id of [
+	recursiveCollectableId,
+	recursiveCollectionId,
+	nonRecursiveCollectableId,
+	nonRecursiveCollectionId,
+	nonCollectableId
+])
+	console.log(id.toString(), id.toPath().join('.'))
diff --git a/src/pkg-core/IdParser.ts b/src/pkg-core/IdParser.ts
index 796f98412..e568ac416 100644
--- a/src/pkg-core/IdParser.ts
+++ b/src/pkg-core/IdParser.ts
@@ -12,7 +12,7 @@ import {
 } from './Id/TypeMaps.js'
 import type * as Utils from './Id/Utils.js'
 
-type DataswornTree =
+export type DataswornTree =
 	| Record<string, Datasworn.RulesPackage>
 	| Map<string, Datasworn.RulesPackage>
 
@@ -720,18 +720,6 @@ namespace IdParser {
 		PathKeys extends Utils.AnyPathKeys
 	> = Utils.Join<ToStringArray<RulesPackage, TypeKeys, PathKeys>, CONST.Sep>
 
-	export type Last<T extends unknown[]> = T extends [infer U]
-		? U
-		: T extends [...T[number][], infer U]
-		  ? U
-		  : never
-
-	export type DropLast<T extends unknown[]> = T extends [T[number]]
-		? []
-		: T extends [...infer U extends T[number][], T[number]]
-		  ? U
-		  : never
-
 	export type AnyParsedId =
 		| IdParser.Parsed<Strings.AnyCollectableId>
 		| IdParser.Parsed<Strings.AnyCollectionId>
@@ -1052,13 +1040,12 @@ interface RecursiveCollectableId<
 namespace RecursiveCollectableId {
 	export type FromString<T extends Strings.RecursiveCollectableId> =
 		T extends `${infer RulesPackage}${CONST.Sep}${infer Type extends
-			TypeElements.Collectable.Recursive}${infer AncestorPath extends
-			`${CONST.Sep}${string}`}${CONST.Sep}${infer Key}`
+			TypeElements.Collectable.Recursive}${CONST.Sep}${string}`
 			? RecursiveCollectableId<
 					RulesPackage,
 					Type,
-					Utils.Split<AncestorPath>,
-					Key
+					Utils.ExtractAncestorPathElements<T>,
+					Utils.ExtractKey<T>
 			  > & {
 					id: T
 			  }
@@ -1135,8 +1122,8 @@ class RecursiveCollectionId<
 		const result = new RecursiveCollectionId<
 			RulesPackage,
 			Subtype,
-			IdParser.DropLast<AncestorKeys>,
-			IdParser.Last<AncestorKeys>
+			Utils.DropLast<AncestorKeys>,
+			Utils.Last<AncestorKeys>
 		>(this.rulesPackage, this.subtype, ...(this.ancestorCollectionKeys as any))
 
 		return result as AncestorKeys extends [] ? never : typeof result