Cannot compile wasm code due to missing traits for my structs (IntoWasmAbi, OptionFromWasmAbi, FromWasmAbi, etc)

[ramarivera]

Describe the Bug

Cannot compile wasm code due to missing traits for my structs

Steps to Reproduce

1. Clone https://github.com/ramarivera/rust-wasm-problem
2. Install dependencies
3. Open a terminal and execute cargo run-script watch_compile_wasm

Expected Behavior

The code hopefully compiles, or at least provides actionable messages for me to fix it.

Actual Behavior

I get a lot of noise in the console, most of which I cannot understand why it's happening:

Snippet

[INFO]: 🎯  Checking for the Wasm target...
[INFO]: 🌀  Compiling to Wasm...
   Compiling delta_repro v0.1.0 (/Users/rrivera/dev/rust/delta_repro)
error[E0277]: the trait bound `DeltaOperation: JsObject` is not satisfied
  --> src/delta/mod.rs:14:30
   |
14 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
   |                              ^^^^^^^^^^^^ the trait `JsObject` is not implemented for `DeltaOperation`
   |
   = help: the trait `FromWasmAbi` is implemented for `Vec<T>`
   = note: required for `DeltaOperation` to implement `VectorFromWasmAbi`
   = note: required for `Vec<DeltaOperation>` to implement `FromWasmAbi`
   = note: this error originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `HashMap<std::string::String, FlexMapValue>: OptionIntoWasmAbi` is not satisfied
  --> src/delta/mod.rs:74:30
   |
74 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
   |                              ^^^^^^^^^^^^ the trait `OptionIntoWasmAbi` is not implemented for `HashMap<std::string::String, FlexMapValue>`
   |
   = help: the following other types implement trait `OptionIntoWasmAbi`:
             bool
             char
             i8
             i16
             u8
             u16
             Delta
             Box<[T]>
           and 29 others
   = note: required for `std::option::Option<HashMap<std::string::String, FlexMapValue>>` to implement `IntoWasmAbi`
   = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `HashMap<std::string::String, FlexMapValue>: OptionFromWasmAbi` is not satisfied
  --> src/delta/mod.rs:74:30
   |
74 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
   |                              ^^^^^^^^^^^^ the trait `OptionFromWasmAbi` is not implemented for `HashMap<std::string::String, FlexMapValue>`
   |
   = help: the following other types implement trait `OptionFromWasmAbi`:
             bool
             char
             i8
             i16
             u8
             u16
             Delta
             Box<[T]>
           and 3 others
   = note: required for `std::option::Option<HashMap<std::string::String, FlexMapValue>>` to implement `FromWasmAbi`
   = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `HashMap<std::string::String, FlexMapValue>: FromWasmAbi` is not satisfied
  --> src/delta/mod.rs:80:30
   |
80 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
   |                              ^^^^^^^^^^^^ the trait `FromWasmAbi` is not implemented for `HashMap<std::string::String, FlexMapValue>`
   |
   = help: the following other types implement trait `FromWasmAbi`:
             bool
             char
             isize
             i8
             i16
             i32
             i64
             usize
           and 24 others
   = note: this error originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `HashMap<std::string::String, FlexMapValue>: OptionFromWasmAbi` is not satisfied
   --> src/delta/mod.rs:105:30
    |
105 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
    |                              ^^^^^^^^^^^^ the trait `OptionFromWasmAbi` is not implemented for `HashMap<std::string::String, FlexMapValue>`
    |
    = help: the following other types implement trait `OptionFromWasmAbi`:
              bool
              char
              i8
              i16
              u8
              u16
              Delta
              Box<[T]>
            and 3 others
    = note: required for `std::option::Option<HashMap<std::string::String, FlexMapValue>>` to implement `FromWasmAbi`
    = note: this error originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `DeltaOperation: IntoWasmAbi` is not satisfied
   --> src/delta/mod.rs:105:30
    |
105 | #[cfg_attr(feature = "wasm", wasm_bindgen)]
    |                              ^^^^^^^^^^^^ the trait `IntoWasmAbi` is not implemented for `DeltaOperation`
    |
    = help: the following other types implement trait `IntoWasmAbi`:
              bool
              char
              isize
              i8
              i16
              i32
              i64
              usize
            and 73 others
    = note: required for `DeltaOperation` to implement `ReturnWasmAbi`
    = note: this error originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `delta_repro` (lib) due to 11 previous errors
Error: Compiling your crate to WebAssembly failed
Caused by: Compiling your crate to WebAssembly failed
Caused by: failed to execute `cargo build`: exited with exit status: 101
  full command: cd "/Users/rrivera/dev/rust/delta_repro" && "cargo" "build" "--lib" "--release" "--target" "wasm32-unknown-unknown" "--features" "wasm"

Additional Context

Tried with both stable and nightly.
Tried on Mac os.