diff --git a/src/services/processor.ts b/src/services/processor.ts
index ba58212..660fe99 100644
--- a/src/services/processor.ts
+++ b/src/services/processor.ts
@@ -1,7 +1,7 @@
 import type { Client } from "./client";
 import type { Context } from "../types/context";
 import { HandlerType, Trait, type EventPayload } from "../types/common";
-import { CommandHandler, type Handler, type ArgsFromOptions, OptionTypeMap } from "../types/handler";
+import { CommandHandler, type Handler, type ArgsFromOptions, OptionConstructorMap } from "../types/handler";
 import type { API } from "./api";
 import { ApplicationCommandType, type ApplicationCommandOption, type ApplicationCommandOptionResult } from "../types/applicationCommand";
 import type { Emitter } from "./bus";
@@ -89,7 +89,7 @@ export class Processor {
                 validated[def.name] = choice.value;
             } else {
                 // Otherwise just check the type
-                if (arg.value instanceof OptionTypeMap[def.type]) {
+                if (arg.value instanceof OptionConstructorMap[def.type]) {
                     // TODO: Coerce the type if possible
                     throw new Error(`Invalid type for ${def.name}: expected ${def.type}, got ${typeof arg}`);
                 } else {
diff --git a/src/types/handler.ts b/src/types/handler.ts
index 221a684..a4012e9 100644
--- a/src/types/handler.ts
+++ b/src/types/handler.ts
@@ -2,7 +2,7 @@ import { ApplicationCommandOptionType, type ApplicationCommandOption } from "./a
 import { Trait, type EventPayload } from "./common";
 import type { Context } from "./context";
 
-export const OptionTypeMap = {
+export const OptionConstructorMap = {
     [ApplicationCommandOptionType.String]: String,
     [ApplicationCommandOptionType.Integer]: Number,
     [ApplicationCommandOptionType.Boolean]: Boolean,
@@ -16,6 +16,20 @@ export const OptionTypeMap = {
     [ApplicationCommandOptionType.SubCommandGroup]: String, // Handled by `options`
 };
 
+export type OptionTypeMap = {
+    [ApplicationCommandOptionType.String]: string,
+    [ApplicationCommandOptionType.Integer]: number,
+    [ApplicationCommandOptionType.Boolean]: boolean,
+    [ApplicationCommandOptionType.Number]: number,
+    [ApplicationCommandOptionType.User]: string, // Could be a user ID or object depending on your use case
+    [ApplicationCommandOptionType.Channel]: string, // Could be a channel ID or object
+    [ApplicationCommandOptionType.Role]: string, // Could be a role ID or object
+    [ApplicationCommandOptionType.Mentionable]: string, // Could be a mentionable ID or object
+    [ApplicationCommandOptionType.Attachment]: string, // Could represent attachment IDs
+    [ApplicationCommandOptionType.SubCommand]: string, // Handled by `options`
+    [ApplicationCommandOptionType.SubCommandGroup]: string, // Handled by `options`
+};
+
 // Recursive type to map ApplicationCommandOption to arguments
 export type ArgsFromOptions<T extends readonly ApplicationCommandOption[]> = {
     [Option in T[number] as Option['name']]: Option extends { options: readonly ApplicationCommandOption[] }
@@ -24,10 +38,10 @@ export type ArgsFromOptions<T extends readonly ApplicationCommandOption[]> = {
         ? Option['required'] extends true // If required, keep as is; otherwise, make optional
             ? U
             : U | undefined
-        : Option['type'] extends keyof typeof OptionTypeMap
+        : Option['type'] extends keyof OptionTypeMap
         ? Option['required'] extends true // If required, keep as is; otherwise, make optional
-            ? typeof OptionTypeMap[Option['type']]
-            : typeof OptionTypeMap[Option['type']] | undefined
+            ? OptionTypeMap[Option['type']]
+            : OptionTypeMap[Option['type']] | undefined
         : Option['required'] extends true
         ? unknown
         : unknown | undefined;