From f681713438e40afd8e70bc51002364ed24656a33 Mon Sep 17 00:00:00 2001
From: Brord van Wierst <brord@iota.org>
Date: Mon, 31 Oct 2022 14:30:13 -0300
Subject: [PATCH] Added std to errors and crate

---
 lets/Cargo.toml      | 1 +
 lets/src/error.rs    | 6 ++++++
 streams/Cargo.toml   | 3 ++-
 streams/src/error.rs | 6 ++++++
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/lets/Cargo.toml b/lets/Cargo.toml
index edc961fc..ed9daf70 100644
--- a/lets/Cargo.toml
+++ b/lets/Cargo.toml
@@ -15,6 +15,7 @@ version = "0.2.0"
 
 [features]
 default = ["utangle-client"]
+std = ["spongos/std"]
 # Enable the IOTA-Tangle transport client (implies `std` features)
 tangle-client = ["iota-client/async", "futures", "iota-crypto/blake2b"]
 # Enable the wasm-compatible IOTA-Tangle transport client (incompatile with `tangle-client` feature due to `iota-client/async` using `tokio`. Implies `std` feature)
diff --git a/lets/src/error.rs b/lets/src/error.rs
index d39e7ea6..317db7d5 100644
--- a/lets/src/error.rs
+++ b/lets/src/error.rs
@@ -161,3 +161,9 @@ impl From<reqwest::Error> for Error {
         Self::Request(error)
     }
 }
+
+#[cfg(feature = "std")]
+extern crate std;
+
+#[cfg(feature = "std")]
+impl std::error::Error for Error {}
\ No newline at end of file
diff --git a/streams/Cargo.toml b/streams/Cargo.toml
index 7931ea4a..bdcd4e3e 100644
--- a/streams/Cargo.toml
+++ b/streams/Cargo.toml
@@ -14,7 +14,8 @@ readme = "README.md"
 version = "0.2.0"
 
 [features]
-default = ["utangle-client"]
+default = ["utangle-client", "std"]
+std = ["lets/std", "spongos/std"]
 did = ["lets/did"]
 # Enable re-export of uTangle transport client from LETS
 utangle-client = ["lets/utangle-client"]
diff --git a/streams/src/error.rs b/streams/src/error.rs
index 4be31fde..0ad93238 100644
--- a/streams/src/error.rs
+++ b/streams/src/error.rs
@@ -116,3 +116,9 @@ impl From<anyhow::Error> for Error {
         Self::External(error)
     }
 }
+
+#[cfg(feature = "std")]
+extern crate std;
+
+#[cfg(feature = "std")]
+impl std::error::Error for Error {}
\ No newline at end of file