get rid of OssifiedOpDir, DBRef, simplify current_op/3

Cargo.lock

@@ -251,6 +251,26 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "console_log"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be8aed40e4edbf4d3b4431ab260b63fdc40f5780a4766824329ea0f1eefe3c0f"
+dependencies = [
+ "log",
+ "web-sys",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.3"
@@ -1899,6 +1919,8 @@ dependencies = [
  "blake2 0.8.1",
  "bytes",
  "chrono",
+ "console_error_panic_hook",
+ "console_log",
  "cpu-time",
  "crossterm",
  "crrl",
@@ -1938,6 +1960,7 @@ dependencies = [
  "rustyline",
  "ryu",
  "select",
+ "serde-wasm-bindgen",
  "serial_test",
  "sha3 0.8.2",
  "smallvec",
@@ -1949,6 +1972,9 @@ dependencies = [
  "to-syn-value_derive",
  "tokio",
  "walkdir",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
 ]
 
 [[package]]
@@ -1994,6 +2020,17 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-wasm-bindgen"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3b143e2833c57ab9ad3ea280d21fd34e285a42837aeb0ee301f4f41890fa00e"
+dependencies = [
+ "js-sys",
+ "serde",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.188"