Add Crypto HmacSha256 support

Makefile

@@ -22,7 +22,7 @@ docs:
 	cargo doc --package=javy-core --open --target=wasm32-wasi
 
 test-javy:
-	CARGO_TARGET_WASM32_WASI_RUNNER="wasmtime --dir=."  cargo wasi test --package=javy --features json,messagepack -- --nocapture
+	CARGO_TARGET_WASM32_WASI_RUNNER="wasmtime --dir=."  cargo wasi test --package=javy --features json,messagepack,crypto -- --nocapture
 
 test-core:
 	cargo wasi test --package=javy-core -- --nocapture
@@ -37,7 +37,7 @@ test-runner:
 	cargo test --package=javy-runner -- --nocapture
 
 # WPT requires a Javy build with the experimental_event_loop feature to pass
-test-wpt: export CORE_FEATURES ?= experimental_event_loop
+test-wpt: export CORE_FEATURES ?= experimental_event_loop,crypto
 test-wpt:
 # Can't use a prerequisite here b/c a prequisite will not cause a rebuild of the CLI
 	$(MAKE) cli

crates/config/src/lib.rs

@@ -31,6 +31,7 @@ bitflags! {
         const JAVY_STREAM_IO = 1 << 2;
         const REDIRECT_STDOUT_TO_STDERR = 1 << 3;
         const TEXT_ENCODING = 1 << 4;
+        const CRYPTO = 1 << 5;
     }
 }
 
@@ -44,5 +45,6 @@ mod tests {
         assert!(Config::JAVY_STREAM_IO == Config::from_bits(1 << 2).unwrap());
         assert!(Config::REDIRECT_STDOUT_TO_STDERR == Config::from_bits(1 << 3).unwrap());
         assert!(Config::TEXT_ENCODING == Config::from_bits(1 << 4).unwrap());
+        assert!(Config::CRYPTO == Config::from_bits(1 << 5).unwrap());
     }
 }

crates/core/Cargo.toml

@@ -21,3 +21,4 @@ javy-config = { workspace = true }
 
 [features]
 experimental_event_loop = []
+crypto = ["experimental_event_loop", "javy/crypto"]

crates/core/src/runtime.rs

@@ -4,7 +4,7 @@ use javy_config::Config as SharedConfig;
 
 pub(crate) fn new(shared_config: SharedConfig) -> Result<Runtime> {
     let mut config = Config::default();
-    let config = config
+    config
         .text_encoding(shared_config.contains(SharedConfig::TEXT_ENCODING))
         .redirect_stdout_to_stderr(shared_config.contains(SharedConfig::REDIRECT_STDOUT_TO_STDERR))
         .javy_stream_io(shared_config.contains(SharedConfig::JAVY_STREAM_IO))
@@ -14,5 +14,8 @@ pub(crate) fn new(shared_config: SharedConfig) -> Result<Runtime> {
         .override_json_parse_and_stringify(false)
         .javy_json(false);
 
-    Runtime::new(std::mem::take(config))
+    #[cfg(feature = "crypto")]
+    config.crypto(shared_config.contains(SharedConfig::CRYPTO));
+
+    Runtime::new(std::mem::take(&mut config))
 }

crates/javy/Cargo.toml

@@ -13,6 +13,7 @@ categories = ["wasm"]
 anyhow = { workspace = true }
 rquickjs = { version = "=0.6.1", features = ["array-buffer", "bindgen"] }
 rquickjs-core = "=0.6.1"
+rquickjs-macro = "=0.6.1"
 rquickjs-sys = "=0.6.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", optional = true }
@@ -24,6 +25,8 @@ quickcheck = "1"
 bitflags = { workspace = true }
 fastrand = "2.1.0"
 simd-json = { version = "0.13.10", optional = true, default-features = false, features = ["big-int-as-float", "serde_impl"] }
+sha2 = { version = "0.10.8", optional = true }
+hmac = { version = "0.12.1", optional = true }
 
 [dev-dependencies]
 javy-test-macros = { path = "../test-macros/" }
@@ -39,3 +42,5 @@ messagepack = ["rmp-serde", "serde-transcode"]
 # implications of enabling by default (due to the extra dependencies) and also
 # because the native implementation is probably fine for most use-cases.
 json = ["serde_json", "serde-transcode", "simd-json"]
+# Enable support for WinterCG-compatible Crypto APIs
+crypto = ["dep:sha2", "dep:hmac"]

crates/javy/src/apis/crypto/crypto.js

@@ -0,0 +1,17 @@
+(function() {
+  const __javy_cryptoSubtleSign = globalThis.__javy_cryptoSubtleSign;
+
+  const crypto = {
+    subtle: {}
+  };
+
+
+  crypto.subtle.sign = function(obj, key, msg) {
+    return new Promise((resolve, _) => {
+      resolve(__javy_cryptoSubtleSign(obj, key, msg));
+    });
+  }
+
+  globalThis.crypto = crypto;
+  // Reflect.deleteProperty(globalThis, "__javy_cryptoSubtleSign");
+})();