Add experimental support for the anyref type

.travis.yml

@@ -65,6 +65,8 @@ matrix:
         - cargo test
         # Run the main body of the test suite
         - cargo test --target wasm32-unknown-unknown
+        # Make sure the anyref pass at least compiles even if it doesn't run
+        - NODE_ARGS=/dev/null WASM_BINDGEN_ANYREF=1 cargo test --target wasm32-unknown-unknown --test wasm
         # Rerun the test suite but disable `--debug` in generated JS
         - WASM_BINDGEN_NO_DEBUG=1 cargo test --target wasm32-unknown-unknown
         # Make sure our serde tests work

crates/anyref-xform/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "wasm-bindgen-anyref-xform"
+version = "0.2.37"
+authors = ["The wasm-bindgen Developers"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/anyref-xform"
+homepage = "https://rustwasm.github.io/wasm-bindgen/"
+documentation = "https://docs.rs/wasm-bindgen-anyref-xform"
+description = """
+Internal anyref transformations for wasm-bindgen
+"""
+edition = '2018'
+
+[dependencies]
+failure = "0.1"
+walrus = "0.4"