gnu: Add node-safe-buffer.

* gnu/packages/node-xyz.scm (node-safe-buffer): New variable.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

gnu/packages/node-xyz.scm

@@ -391,6 +391,35 @@ (define-public node-inherits
 defaulting to Node's implementation otherwise.")
     (license license:isc)))
 
+(define-public node-safe-buffer
+  (package
+    (name "node-safe-buffer")
+    (version "5.2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/feross/safe-buffer")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "0r26m0nl41h90ihnl2xf0cqs6z9z7jb87dl5j8yqb7887r9jlbpi"))))
+    (build-system node-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'patch-dependencies 'delete-dependencies
+           (lambda args
+             (delete-dependencies '("tape" "standard")))))
+       #:tests? #f))
+    (home-page "https://github.com/feross/safe-buffer")
+    (synopsis "Buffer creation with explicit semantics")
+    (description "This package provides a drop-in replacement for Node.js
+@code{Buffer} API, which provides newer, explicit constructors (such as
+@code{Buffer.alloc(SIZE)}) in older versions.")
+    (license license:expat)))
+
 (define-public node-irc-colors
   (package
     (name "node-irc-colors")