Add getrandom js feature and wasm dependencies

Cargo.toml

@@ -2,7 +2,7 @@
 resolver = "2"
 members = [ "crates/bindings",
     "crates/cli"
-, "crates/metaboard"]
+, "crates/metaboard", "crates/metadata_wasm"]
 
 [workspace.dependencies]
 reqwest = { version = "0.11.17", features = ["json"] }

crates/metadata_wasm/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "metadata_wasm"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+serde_cbor = "0.11"
+hex = "0.4.3"
+wasm-bindgen = "0.2"
+js-sys = "0.3"
+rain-metadata = "0.0.2-alpha.6"
+serde_bytes = "0.11.12"
+serde-wasm-bindgen = "0.4"
+wasm-bindgen-futures = "0.4"

crates/metadata_wasm/src/lib.rs

@@ -0,0 +1,22 @@
+use wasm_bindgen::prelude::*;
+use rain_metadata::meta::{
+                             RainMetaDocumentV1Item                         };
+use serde_wasm_bindgen::to_value;
+
+#[wasm_bindgen]
+pub fn cbor_decode_wasm(data: &[u8]) -> JsValue {
+    // Decode the data
+    let cbor_decoded = RainMetaDocumentV1Item::cbor_decode(&data);
+
+    // Convert the result to JsValue
+    match cbor_decoded {
+        Ok(decoded) => {
+            let js_value = to_value(&decoded);
+            match js_value {
+                Ok(value) => value,
+                Err(_) => JsValue::from_str("Error converting to JsValue"),
+            }
+        }
+        Err(err) => JsValue::from_str(&format!("CBOR decoding error: {:?}", err)),
+    }
+}