input-output-hk · NicolasDP · Jun 21, 2018
diff --git a/wallet-wasm2/Cargo.toml b/wallet-wasm2/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "wallet-wasm2"
+version = "0.1.0"
+authors = [ "Nicolas Di Prima <nicolas.diprima@iohk.io>"
+          , "Vincent Hanquez <vincent.hanquez@iohk.io>"
+          ]
+description = "JS/Wasm binding for Cardano's Wallet rust library."
+repository = "https://github.com/input-output-hk/js-cardano-wasm"
+license = "MIT"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+raw_cbor = { path = "../rust/cbor" }
+wallet-crypto = { path = "../rust/wallet-crypto" }
+wasm-bindgen = "0.2"
diff --git a/wallet-wasm2/LICENSE b/wallet-wasm2/LICENSE
@@ -0,0 +1,18 @@
+Copyright (c) 2018 IOHK
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/wallet-wasm2/README.md b/wallet-wasm2/README.md
@@ -0,0 +1,59 @@
+# Wallet Wasm (using wasm-bindgen)
+
+This is an experimental js/wasm/rust binding of
+[cardano-rust](https://github.com/input-output-hk/rust-cardano)'s `wallet-crypto`
+crate. It uses the binding generator tool
+[`wasm-bindgen`](https://github.com/rustwasm/wasm-bindgen) and
+[`wasm-pack`](https://github.com/rustwasm/wasm-pack).
+
+## Generate npm package
+
+We use `wasm-pack` to generate a NPM package:
+
+1. [install `rustup`](https://www.rust-lang.org/en-US/install.html):
+   ```
+   $ curl https://sh.rustup.rs -sSf | sh
+   ```
+2. install `wasm-pack`:
+   ```
+   $ cargo install wasm-pack
+   ```
+3. generate it all:
+   ```
+   $ wasm-pack init .
+   ```
+
+## Example
+
+see [js-test](./js-test) for an example of use:
+
+```
+$ cd js-test
+$ npm install
+$ npm run serve
+```
+
+open your browser to: http://localhost:8080/index.html and look at the JSON logs.
+
+## features
+
+Here we strive to remove some of the hand-written functions that came with limitations
+regarding: allocating more memory than needed for output, using JSON
+RPC style...
+
+Instead, we expose a collection of objects:
+
+- private key;
+- public key;
+- payload;
+
+```js
+const loadModule = import('wallet-wasm2/wallet_wasm2.js');
+
+loadModule.then(Cardano => {
+    const MNEMONICS = "town refuse ribbon antenna average enough crumble ice fashion giant question glance";
+
+    // retrieve a root private key
+    let root_xprv = Cardano.XPrv.from_daedalus_mnemonics(MNEMONICS);
+});
+```
diff --git a/wallet-wasm2/js-test/index.html b/wallet-wasm2/js-test/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>cardano wallet example</title>
+  </head>
+  <body>
+    <script src="./index.js"></script>
+  </body>
+</html>
+
diff --git a/wallet-wasm2/js-test/index.js b/wallet-wasm2/js-test/index.js
@@ -0,0 +1,20 @@
+const loadModule = import("wallet-wasm2/wallet_wasm2.js");
+
+loadModule.then(Cardano => {
+    const MNEMONICS = "town refuse ribbon antenna average enough crumble ice fashion giant question glance";
+    const PATH      = [0x8000000, 0x8000000];
+
+    console.log("retrieving root_xprv from a daedalus mnemonic", MNEMONICS);
+    let root_xprv = Cardano.XPrv.from_daedalus_mnemonics(MNEMONICS);
+    let root_xpub = root_xprv.public();
+
+    console.log("daedalus derivation from derivation path", PATH);
+    let xprv = root_xprv;
+    PATH.forEach(index => xprv = xprv.derive_v1(index));
+    let xpub = xprv.public();
+    console.log("daedalus payload");
+    let payload = Cardano.Payload.new(root_xpub, PATH);
+
+    let addr = xpub.to_adddress_with_payload(payload);
+    console.log("Daedalus Address", addr.to_base58());
+});
diff --git a/wallet-wasm2/js-test/package.json b/wallet-wasm2/js-test/package.json
@@ -0,0 +1,13 @@
+{
+  "scripts": {
+    "serve": "webpack-dev-server"
+  },
+  "dependencies": {
+    "wallet-wasm2": "file:../pkg"
+  },
+  "devDependencies": {
+    "webpack": "^4.0.1",
+    "webpack-cli": "^2.0.10",
+    "webpack-dev-server": "^3.1.0"
+  }
+}
diff --git a/wallet-wasm2/js-test/webpack.config.js b/wallet-wasm2/js-test/webpack.config.js
@@ -0,0 +1,9 @@
+const path = require('path');
+module.exports = {
+  entry: "./index.js",
+  output: {
+    path: path.resolve(__dirname, "dist"),
+    filename: "index.js",
+  },
+  mode: "development"
+};