fix: add getrandom with js feature for wasm (#2076)

Cargo.lock

@@ -1409,6 +1409,7 @@ dependencies = [
  "elliptic-curve",
  "ethabi",
  "generic-array 0.14.6",
+ "getrandom 0.2.8",
  "hex",
  "hex-literal",
  "k256",

ethers-core/Cargo.toml

@@ -47,6 +47,10 @@ num_enum = "0.5.9"
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 tempfile = { version = "3.3.0", default-features = false }
 
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+# NOTE: this enables wasm compatibility for getrandom indirectly
+getrandom = { version = "0.2", features = ["js"] }
+
 [dev-dependencies]
 serde_json = { version = "1.0.64", default-features = false }
 bincode = { version = "1.3.3", default-features = false }

ethers-core/src/lib.rs

@@ -1,7 +1,7 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![doc = include_str!("../README.md")]
 #![deny(rustdoc::broken_intra_doc_links)]
-#![deny(unused_crate_dependencies)]
+#![cfg_attr(not(target_arch = "wasm32"), deny(unused_crate_dependencies))]
 
 pub mod types;