From 3d5cd6110a1678fd138efa0285a00c8f1781089e Mon Sep 17 00:00:00 2001
From: Karsten Schmidt <k@postspectacular.com>
Date: Thu, 28 Mar 2019 18:10:24 +0000
Subject: [PATCH] feat(vectors): add Vec2/3/4Like type aliases, update
 ReadonlyVec

---
 packages/vectors/src/api.ts | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/packages/vectors/src/api.ts b/packages/vectors/src/api.ts
index a26449ff2d..bfb7f622dc 100644
--- a/packages/vectors/src/api.ts
+++ b/packages/vectors/src/api.ts
@@ -1,4 +1,5 @@
 import {
+    ArrayLikeIterable,
     Fn,
     Fn2,
     Fn3,
@@ -7,16 +8,20 @@ import {
     ICopy,
     IEmpty,
     IEqualsDelta,
-    ILength
+    ILength,
+    Tuple,
+    TypedArray
 } from "@thi.ng/api";
 
 export interface Vec extends Iterable<number>, ILength {
     [id: number]: number;
 }
 
-export interface ReadonlyVec extends Iterable<number>, ILength {
-    readonly [id: number]: number;
-}
+export type ReadonlyVec = ArrayLikeIterable<number>;
+
+export type Vec2Like = Tuple<number, 2> | TypedArray;
+export type Vec3Like = Tuple<number, 3> | TypedArray;
+export type Vec4Like = Tuple<number, 4> | TypedArray;
 
 export interface StridedVec {
     buf: Vec;