feat: support wasm32 target (#26)

.github/workflows/ci.yml

@@ -37,6 +37,13 @@ jobs:
         target: thumbv6m-none-eabi
         override: true
 
+    - name: Install toolchain WASM
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        target: wasm32-unknown-unknown
+        override: true
+
     - name: Install Cargo.toml linter
       uses: baptiste0928/cargo-install@v1
       with:
@@ -73,6 +80,24 @@ jobs:
         command: build
         args: --verbose --target thumbv6m-none-eabi --no-default-features --features random
 
+    - name: Build WASM
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --verbose --target wasm32-unknown-unknown --no-default-features
+
+    - name: Build WASM alloc
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --verbose --target wasm32-unknown-unknown --no-default-features --features alloc
+
+    - name: Build WASM random
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --verbose --target wasm32-unknown-unknown --no-default-features --features random
+
     - name: Run tests all features
       uses: actions-rs/cargo@v1
       with:

Cargo.toml

@@ -16,10 +16,8 @@ coins-bip32 = { version = "0.7", default-features = false, optional = true }
 coins-bip39 = { version = "0.7", default-features = false, optional = true }
 fuel-types = { version = "0.5", default-features = false }
 lazy_static = { version = "1.4", optional = true }
-rand = { version = "0.8", default-features = false, features = ["std_rng"], optional = true }
-# `rand-std` is used to further protect the blinders from side-channel attacks and won't compromise
-# the deterministic arguments of the signature (key, nonce, message), as defined in the RFC-6979
-secp256k1 = { version = "0.24", features = [ "rand-std", "recovery" ], optional = true }
+rand = { version = "0.8", default-features = false, optional = true }
+secp256k1 = { version = "0.24", default-features = false, features = ["recovery"], optional = true }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
 sha2 = { version = "0.10", default-features = false }
 
@@ -33,9 +31,13 @@ sha2 = "0.10"
 
 [features]
 default = ["fuel-types/default", "std"]
+alloc = ["rand/alloc", "secp256k1/alloc"]
 random = ["fuel-types/random", "rand"]
 serde = ["dep:serde", "fuel-types/serde"]
-std = ["fuel-types/std", "lazy_static", "secp256k1", "serde?/default", "coins-bip32", "coins-bip39"]
+# `rand-std` is used to further protect the blinders from side-channel attacks and won't compromise
+# the deterministic arguments of the signature (key, nonce, message), as defined in the RFC-6979
+std = ["alloc", "coins-bip32", "coins-bip39", "fuel-types/std", "lazy_static", "rand/std_rng", "secp256k1/rand-std", "serde?/default"]
+wasm = ["secp256k1/rand"]
 
 [[test]]
 name = "test-mnemonic"