diff --git a/src/utils.rs b/src/utils.rs
index 53c6515..bc3e34a 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -15,7 +15,9 @@ pub fn cbor_type_code_str(cbor_type: cbor_event::Type) -> &'static str {
 
 pub fn convert_to_snake_case(ident: &str) -> String {
     let mut snake_case = String::new();
-    for c in ident.chars() {
+    let mut in_uppercase_run = false;
+    let mut iter = ident.chars().peekable();
+    while let Some(c) = iter.next() {
         match c {
             '-' => {
                 snake_case.push('_');
@@ -24,8 +26,27 @@ pub fn convert_to_snake_case(ident: &str) -> String {
                 // ignored
             }
             c => {
-                if c.is_ascii_uppercase() && !snake_case.is_empty() {
-                    snake_case.push('_')
+                // NFT -> nft
+                // IPAddress -> ip_address
+                // shelley_MA -> shelley_ma
+                if in_uppercase_run {
+                    if c.is_ascii_uppercase() {
+                        if let Some(next) = iter.peek() {
+                            if next.is_ascii_lowercase() {
+                                if !snake_case.is_empty() {
+                                    snake_case.push('_');
+                                }
+                                in_uppercase_run = false;
+                            }
+                        }
+                    } else {
+                        in_uppercase_run = false;
+                    }
+                } else if c.is_ascii_uppercase() {
+                    if !snake_case.is_empty() {
+                        snake_case.push('_');
+                    }
+                    in_uppercase_run = true;
                 }
                 snake_case.push(c.to_ascii_lowercase());
             }
diff --git a/static/package.json b/static/package.json
index a44998c..d3f7ae4 100644
--- a/static/package.json
+++ b/static/package.json
@@ -3,10 +3,11 @@
   "version": "0.0.1",
   "description": "cddl-codegen generated library",
   "scripts": {
-    "rust:build-nodejs": "rimraf ./rust/wasm/pkg && cd rust/wasm; wasm-pack build --target=nodejs; wasm-pack pack",
-    "rust:build-browser": "rimraf ./rust/wasm/pkg && cd rust/wasm; wasm-pack build --target=browser; wasm-pack pack"
+    "rust:build-nodejs": "rimraf ./rust/wasm/pkg && cd rust/wasm; cross-env WASM_BINDGEN_WEAKREF=1 wasm-pack build --target=nodejs; wasm-pack pack",
+    "rust:build-browser": "rimraf ./rust/wasm/pkg && cd rust/wasm; cross-env WASM_BINDGEN_WEAKREF=1 wasm-pack build --target=browser; wasm-pack pack"
   },
   "devDependencies": {
-    "rimraf": "3.0.2"
+    "rimraf": "3.0.2",
+    "cross-env": "^7.0.3"
   }
 }
diff --git a/static/package_json_schemas.json b/static/package_json_schemas.json
index af90d65..b613c56 100644
--- a/static/package_json_schemas.json
+++ b/static/package_json_schemas.json
@@ -3,12 +3,13 @@
   "version": "0.0.1",
   "description": "cddl-codegen generated library",
   "scripts": {
-    "rust:build-nodejs": "rimraf ./rust/wasm/pkg && cd rust/wasm; wasm-pack build --target=nodejs; cd ../..; npm run js:ts-json-gen; cd rust/wasm; wasm-pack pack",
-    "rust:build-browser": "rimraf ./rust/wasm/pkg && cd rust/wasm; wasm-pack build --target=browser; cd ../..; npm run js:ts-json-gen; cd rust/wasm; wasm-pack pack",
+    "rust:build-nodejs": "rimraf ./rust/wasm/pkg && cd rust/wasm; cross-env WASM_BINDGEN_WEAKREF=1 wasm-pack build --target=nodejs; cd ../..; npm run js:ts-json-gen; cd rust/wasm; wasm-pack pack",
+    "rust:build-browser": "rimraf ./rust/wasm/pkg && cd rust/wasm; cross-env WASM_BINDGEN_WEAKREF=1 wasm-pack build --target=browser; cd ../..; npm run js:ts-json-gen; cd rust/wasm; wasm-pack pack",
     "js:ts-json-gen": "cd rust/json-gen && cargo +stable run && cd ../.. && node ./scripts/run-json2ts.js && node ./scripts/json-ts-types.js"
   },
   "devDependencies": {
     "json-schema-to-typescript": "^10.1.5",
-    "rimraf": "3.0.2"
+    "rimraf": "3.0.2",
+    "cross-env": "^7.0.3"
   }
 }
diff --git a/tests/core/input.cddl b/tests/core/input.cddl
index 1c8cbd8..7fa0a8c 100644
--- a/tests/core/input.cddl
+++ b/tests/core/input.cddl
@@ -256,6 +256,17 @@ enum_opt_embed_fields = [
   1, ? overlapping_inlined, #6.13(13)
 ]
 
+casing_test = [
+	; @name NFT
+	1 //
+	; @name IPAddress
+	2 //
+  ; @name ShelleyMA
+  3 //
+  ; @name VRF_vkey
+  4
+]
+
 custom_bytes = bytes ; @custom_serialize custom_serialize_bytes @custom_deserialize custom_deserialize_bytes
 
 struct_with_custom_serialization = [
diff --git a/tests/core/tests.rs b/tests/core/tests.rs
index 444ade0..a026cde 100644
--- a/tests/core/tests.rs
+++ b/tests/core/tests.rs
@@ -508,6 +508,18 @@ mod tests {
     }
 
     #[test]
+    fn casing_test() {
+        // these are just testing that these exist under these names
+        let _ = CasingTest::new_nft();
+        let _ = CasingTest::NFT;
+        let _ = CasingTest::new_ip_address();
+        let _ = CasingTest::IPAddress;
+        let _ = CasingTest::new_shelley_ma();
+        let _ = CasingTest::ShelleyMA;
+        let _ = CasingTest::new_vrf_vkey();
+        let _ = CasingTest::VRFVkey;
+    }
+  
     fn custom_serialization() {
         let struct_with_custom_bytes = StructWithCustomSerialization::new(
             vec![0xCA, 0xFE, 0xF0, 0x0D],