build: Add js Cargo feature flag for WASM builds

Cargo.toml

@@ -3,6 +3,7 @@ resolver = "2"
 members = [
     "clients/rust",
     "interface",
+    "interface-wasm-js",
 ]
 
 [workspace.package]
@@ -27,3 +28,4 @@ solana-program = { version = "2.2.1", default-features = false }
 solana-program-entrypoint = "2.2.1"
 solana-program-error = "2.2.1"
 solana-pubkey = { version = "2.2.1", default-features = false }
+solana-system-interface = { path = "interface" }

interface-wasm-js/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "solana-system-interface-wasm-js"
+version = "1.0.0"
+description = "Instructions and constructors for the System program"
+readme = "README.md"
+authors = { workspace = true }
+repository = { workspace = true }
+homepage = { workspace = true }
+license = { workspace = true }
+edition = { workspace = true }
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu", "wasm32-unknown-unknown"]
+all-features = true
+rustdoc-args = ["--cfg=docsrs"]
+
+[dependencies]
+solana-instruction = { workspace = true, features = ["bincode", "std"] }
+solana-pubkey = { workspace = true, default-features = false }
+solana-system-interface = { workspace = true }
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+js-sys = { version = "0.3.72" }
+wasm-bindgen = { version = "0.2" }
+
+[lib]
+crate-type = ["cdylib"]

interface-wasm-js/README.md

@@ -0,0 +1,12 @@
+<p align="center">
+  <a href="https://solana.com">
+    <img alt="Solana" src="https://i.imgur.com/IKyzQ6T.png" width="250" />
+  </a>
+</p>
+
+# Solana System Interface WASM JS
+
+Use the Solana System Interface WASM JS crate to build a JS package with `wasm-pack` usable in Node or browser environments.
+See the [Solana System Interface Crate](https://crates.io/crates/solana-system-interface) instead for on-chain programs and client-side applications.
+
+Still have questions?  Ask us on [Stack Exchange](https://sola.na/sse)

interface-wasm-js/src/lib.rs

@@ -0,0 +1,121 @@
+//! `SystemInstruction` Javascript interface
+#![allow(non_snake_case)]
+use {
+    solana_instruction::Instruction,
+    solana_pubkey::Pubkey,
+    solana_system_interface::instruction::{
+        advance_nonce_account, allocate_with_seed, assign_with_seed, authorize_nonce_account,
+        create_account, create_account_with_seed, create_nonce_account, transfer_with_seed,
+        withdraw_nonce_account,
+    },
+    wasm_bindgen::prelude::*,
+};
+
+#[wasm_bindgen]
+pub fn createAccount(
+    from_pubkey: &Pubkey,
+    to_pubkey: &Pubkey,
+    lamports: u64,
+    space: u64,
+    owner: &Pubkey,
+) -> Instruction {
+    create_account(from_pubkey, to_pubkey, lamports, space, owner)
+}
+
+#[wasm_bindgen]
+pub fn createAccountWithSeed(
+    from_pubkey: &Pubkey,
+    to_pubkey: &Pubkey,
+    base: &Pubkey,
+    seed: &str,
+    lamports: u64,
+    space: u64,
+    owner: &Pubkey,
+) -> Instruction {
+    create_account_with_seed(from_pubkey, to_pubkey, base, seed, lamports, space, owner)
+}
+
+#[wasm_bindgen]
+pub fn assign(pubkey: &Pubkey, owner: &Pubkey) -> Instruction {
+    solana_system_interface::instruction::assign(pubkey, owner)
+}
+
+#[wasm_bindgen]
+pub fn assignWithSeed(pubkey: &Pubkey, base: &Pubkey, seed: &str, owner: &Pubkey) -> Instruction {
+    assign_with_seed(pubkey, base, seed, owner)
+}
+
+#[wasm_bindgen]
+pub fn transfer(from_pubkey: &Pubkey, to_pubkey: &Pubkey, lamports: u64) -> Instruction {
+    solana_system_interface::instruction::transfer(from_pubkey, to_pubkey, lamports)
+}
+
+#[wasm_bindgen]
+pub fn transferWithSeed(
+    from_pubkey: &Pubkey,
+    from_base: &Pubkey,
+    from_seed: String,
+    from_owner: &Pubkey,
+    to_pubkey: &Pubkey,
+    lamports: u64,
+) -> Instruction {
+    transfer_with_seed(
+        from_pubkey,
+        from_base,
+        from_seed,
+        from_owner,
+        to_pubkey,
+        lamports,
+    )
+}
+
+#[wasm_bindgen]
+pub fn allocate(pubkey: &Pubkey, space: u64) -> Instruction {
+    solana_system_interface::instruction::allocate(pubkey, space)
+}
+
+#[wasm_bindgen]
+pub fn allocateWithSeed(
+    address: &Pubkey,
+    base: &Pubkey,
+    seed: &str,
+    space: u64,
+    owner: &Pubkey,
+) -> Instruction {
+    allocate_with_seed(address, base, seed, space, owner)
+}
+
+#[wasm_bindgen]
+pub fn createNonceAccount(
+    from_pubkey: &Pubkey,
+    nonce_pubkey: &Pubkey,
+    authority: &Pubkey,
+    lamports: u64,
+) -> js_sys::Array {
+    let instructions = create_nonce_account(from_pubkey, nonce_pubkey, authority, lamports);
+    instructions.into_iter().map(JsValue::from).collect()
+}
+
+#[wasm_bindgen]
+pub fn advanceNonceAccount(nonce_pubkey: &Pubkey, authorized_pubkey: &Pubkey) -> Instruction {
+    advance_nonce_account(nonce_pubkey, authorized_pubkey)
+}
+
+#[wasm_bindgen]
+pub fn withdrawNonceAccount(
+    nonce_pubkey: &Pubkey,
+    authorized_pubkey: &Pubkey,
+    to_pubkey: &Pubkey,
+    lamports: u64,
+) -> Instruction {
+    withdraw_nonce_account(nonce_pubkey, authorized_pubkey, to_pubkey, lamports)
+}
+
+#[wasm_bindgen]
+pub fn authorizeNonceAccount(
+    nonce_pubkey: &Pubkey,
+    authorized_pubkey: &Pubkey,
+    new_authority: &Pubkey,
+) -> Instruction {
+    authorize_nonce_account(nonce_pubkey, authorized_pubkey, new_authority)
+}

interface/Cargo.toml

@@ -27,10 +27,6 @@ solana-msg = { workspace = true }
 solana-program-error = { workspace = true }
 solana-pubkey = { workspace = true, default-features = false }
 
-[target.'cfg(target_arch = "wasm32")'.dependencies]
-js-sys = "0.3.72"
-wasm-bindgen = "0.2"
-
 [dev-dependencies]
 anyhow = "1.0.89"
 borsh = { version = "1.5.1", features = ["derive", "unstable__schema"] }
@@ -59,4 +55,4 @@ frozen-abi = [
 serde = ["dep:serde", "dep:serde_derive", "solana-pubkey/serde"]
 
 [lib]
-crate-type = ["cdylib", "rlib"]
+crate-type = ["rlib"]

interface/src/lib.rs

@@ -5,8 +5,6 @@
 
 pub mod error;
 pub mod instruction;
-#[cfg(target_arch = "wasm32")]
-mod wasm;
 
 #[cfg(test)]
 static_assertions::const_assert!(MAX_PERMITTED_DATA_LENGTH <= u32::MAX as u64);