From c918f4c3a2ac6c1afdeae74228ab32cdeb281674 Mon Sep 17 00:00:00 2001
From: Noel <cutie@floofy.dev>
Date: Fri, 5 Nov 2021 20:27:03 -0700
Subject: [PATCH 1/2] Make `arg` function more type-safe

---
 index.d.ts | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/index.d.ts b/index.d.ts
index 09c3a98..55243d3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,11 +1,23 @@
 declare const flagSymbol: unique symbol;
 
 declare function arg<T extends arg.Spec>(
-	spec: T,
+	spec: arg.SpecToMap<T>,
 	options?: arg.Options
 ): arg.Result<T>;
 
 declare namespace arg {
+	type AddDashesToArg<T> = T extends string
+		? `--${T}`
+		: T extends `--${infer K}`
+		? K
+		: never;
+
+	type SpecToMap<T> = T extends arg.Spec
+		? {
+				[K in keyof T as AddDashesToArg<T>]: T[K];
+		  }
+		: never;
+
 	export function flag<T>(fn: T): T & { [flagSymbol]: true };
 
 	export const COUNT: Handler<number> & { [flagSymbol]: true };

From 97c7ec150876476967c0c4bfc4a6d354a62063e1 Mon Sep 17 00:00:00 2001
From: Noel <cutie@floofy.dev>
Date: Fri, 5 Nov 2021 20:35:19 -0700
Subject: [PATCH 2/2] support single dashes

---
 index.d.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.d.ts b/index.d.ts
index 55243d3..5886c44 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -10,6 +10,8 @@ declare namespace arg {
 		? `--${T}`
 		: T extends `--${infer K}`
 		? K
+		: T extends `-${infer K}`
+		? K
 		: never;
 
 	type SpecToMap<T> = T extends arg.Spec