Fix dependency issues

1. Reorganize dependencies and remove requirements ("=") on wasm-bindgen
   and js-sys, due to conflicts that can occur when using this crate.
2. Replace wasm-bindgen's "serde-serialize" feature with
   serde-wasm-bindgen due to cyclical dependency issue.

Relates to:
tkaitchuck/aHash#95
rustwasm/wasm-bindgen#3031

rust/Cargo.toml

@@ -32,7 +32,6 @@ num-integer = "0.1.45"
 # feature or this one
 clear_on_drop = { version = "0.2", features = ["no_cc"] }
 itertools = "0.10.1"
-getrandom = { version = "0.2.3", features = ["js"] }
 rand = "0.8.4"
 schemars = "0.8.8"
 serde = { version = "1.0", features = ["derive"] }
@@ -41,12 +40,15 @@ serde = { version = "1.0", features = ["derive"] }
 [target.'cfg(not(all(target_arch = "wasm32", not(target_os = "emscripten"))))'.dependencies]
 rand_os = "0.1"
 noop_proc_macro = "0.3.0"
+getrandom = "0.2.3"
 
 # wasm
 [target.'cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))'.dependencies]
-wasm-bindgen = { version = "=0.2.78", features = ["serde-serialize"] }
+serde-wasm-bindgen = "0.4.3"
+wasm-bindgen = "=0.2.78"
 rand_os = { version = "0.1", features = ["wasm-bindgen"] }
-js-sys = "=0.3.51"
+js-sys = "0.3.51"
+getrandom = { version = "0.2.3", features = ["js"] }
 
 [profile.release]
 # Tell `rustc` to optimize for small code size.

rust/src/utils.rs

@@ -43,7 +43,7 @@ macro_rules! to_from_json {
 
             #[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
             pub fn to_js_value(&self) -> Result<JsValue, JsError> {
-                JsValue::from_serde(&self)
+                serde_wasm_bindgen::to_value(&self)
                     .map_err(|e| JsError::from_str(&format!("to_js_value: {}", e)))
             }