feat: refactor core into simplified WASM module

.github/workflows/dusk_ci.yml

@@ -92,7 +92,7 @@ jobs:
         # Move the compiled package to the root for better paths in the npm module.
         # We also automatically populate the version with the given tag.
         run: >
-          ./asyncify.sh &&
+          make package &&
           sed -i "/\"version\": \"0.0.1\"/s/\"0.0.1\"/\"${GITHUB_REF:11}\"/" package.json &&
           npm publish
         env:
@@ -124,6 +124,8 @@ jobs:
           command: check
           args: --all-targets
 
+      - run: make wasm
+
       - name: Test project
         if: ${{ matrix.os != 'ubuntu-latest' || matrix.toolchain != 'nightly' }}
         uses: actions-rs/cargo@v1

Cargo.toml

@@ -5,24 +5,31 @@ edition = "2021"
 description = "The core functionality of the Dusk wallet"
 license = "MPL-2.0"
 
+[lib]
+crate-type = ["cdylib", "rlib"]
+
 [dependencies]
-rand_core = "^0.6"
-rand_chacha = { version = "^0.3", default-features = false }
-sha2 = { version = "^0.10", default-features = false }
-phoenix-core = { version = "0.20.0-rc.0", default-features = false, features = ["alloc", "rkyv-impl"] }
-dusk-pki = { version = "0.12", default-features = false }
-dusk-bytes = "^0.1"
-dusk-schnorr = { version = "0.13", default-features = false }
+bytecheck = { version = "0.6", default-features = false }
+dusk-bls12_381-sign = { version = "0.4", default-features = false }
 dusk-jubjub = { version = "0.12", default-features = false }
+dusk-merkle = { version = "0.5", features = ["rkyv-impl"] }
+dusk-pki = { version = "0.12", default-features = false, features = ["rkyv-impl"] }
 dusk-poseidon = { version = "0.30", default-features = false }
+dusk-schnorr = { version = "0.13", default-features = false }
+phoenix-core = { version = "0.20.0-rc.0", default-features = false, features = ["alloc", "rkyv-impl"] }
 poseidon-merkle = { version = "0.2.1-rc.0", features = ["rkyv-impl"] }
-dusk-plonk = { version = "0.14", default-features = false }
+rand_core = "^0.6"
+rand_chacha = { version = "^0.3", default-features = false }
+rkyv = { version = "^0.7", default-features = false }
+rusk-abi = { version = "0.10.0-piecrust.0.6", default-features = false }
+sha2 = { version = "^0.10", default-features = false }
+
+[target.'cfg(target_family = "wasm")'.dependencies]
+rusk-abi = "0.10.0-piecrust.0.6"
+
+[target.'cfg(not(target_family = "wasm"))'.dependencies]
 rusk-abi = { version = "0.10.0-piecrust.0.6", default-features = false }
-dusk-bls12_381-sign = { version = "0.4", default-features = false }
-rkyv = { version = "0.7", default-features = false }
 
 [dev-dependencies]
 rand = "^0.8"
-
-[lib]
-crate-type = ["cdylib", "rlib"]
+wasmer = "=3.1"

Makefile

@@ -0,0 +1,23 @@
+help: ## Display this help screen
+	@grep -h \
+		-E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | \
+		awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+test: wasm ## Run the wasmer tests
+	@cargo test
+
+wasm: ## Build the WASM files
+	@RUSTFLAGS="$(RUSTFLAGS) --remap-path-prefix $(HOME)= -C link-args=-zstack-size=65536" \
+		cargo build \
+			--release \
+			--color=always \
+			-Z build-std=core,alloc,panic_abort \
+			-Z build-std-features=panic_immediate_abort \
+			--target wasm32-unknown-unknown
+
+package: ## Prepare the WASM npm package
+	wasm-opt -O4 \
+		--output-target/wasm32-unknown-unknown/release/dusk_wallet_core.wasm \
+		-o mod.wasm
+
+.PHONY: test wasm help