From 86937b9dbafaa96c4ef7a40f5bcf47d50a1927de Mon Sep 17 00:00:00 2001
From: Pauan <pcxunlimited@gmail.com>
Date: Mon, 24 Jun 2019 18:00:25 +0200
Subject: [PATCH] Adding in From impl for TypedArrays

---
 crates/js-sys/src/lib.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index d96e784c..d5b49fcf 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -4589,6 +4589,17 @@ macro_rules! arrays {
                 all_wasm_memory.set(self, offset as u32);
             }
         }
+
+        impl<'a> From<&'a [$ty]> for $name {
+            #[inline]
+            fn from(slice: &'a [$ty]) -> $name {
+                // TODO if this was written in JS it could avoid passing the `view` TypedArray to Rust,
+                //      which would be more efficient
+
+                // This is safe because the `new` function makes a copy if its argument is a TypedArray
+                unsafe { $name::new(&$name::view(slice)) }
+            }
+        }
     )*);
 }