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Deno 2.2 Improves Dependency Management and Expands Node.js Compatibility
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@iota/client-wasm
Advanced tools
WebAssembly (Wasm) bindings for TypeScript/JavaScript to the iota.rs
client library.
The iota.rs
client library also offers dedicated Node.js bindings. The differences with this package are outlined below.
Wasm bindings | Node.js bindings | |
---|---|---|
Environment | Node.js, browsers | Node.js |
Installation | - | Rust, Cargo required* |
Performance | ✔️ | ✔️✔️ |
Proof-of-work | Single-threaded | Multi-threaded |
MQTT | ❌ | ✔️ |
Stronghold | ❌ | ✔️ |
Ledger Nano | ❌ | ✔️ |
*Node.js bindings only need to be compiled during npm install
if a pre-compiled binary is not available for your platform.
tl;dr: Use the Node.js bindings if you can. The Wasm bindings are just more portable and support browser environments.
wasm-bindgen
(cargo install wasm-bindgen-cli
);$ npm i @iota/client-wasm
$ yarn add @iota/client-wasm
After installing the library, you can create a Client
instance and interface with it.
const { Client } = require('@iota/client-wasm/node');
const client = new Client({
nodes: ['https://api.testnet.shimmer.network'],
});
client.getInfo().then(console.log).catch(console.error);
See the Node.js examples for more demonstrations, the only change needed is to import @iota/client-wasm/node
instead of @iota/client
.
Unlike Node.js, a few more steps are required to use this in the browser.
The library loads the compiled Wasm file with an HTTP GET request, so the client_wasm_bg.wasm
file must be copied to the root of the distribution folder.
A bundler such as webpack or rollup is recommended.
rollup-plugin-copy
:npm install rollup-plugin-copy --save-dev
rollup.config.js
:// Include the copy plugin.
import copy from 'rollup-plugin-copy'
// ...
// Add the copy plugin to the `plugins` array:
copy({
targets: [{
src: 'node_modules/@iota/client-wasm/web/wasm/client_wasm_bg.wasm',
dest: 'public',
rename: 'client_wasm_bg.wasm'
}]
})
copy-webpack-plugin
:npm install copy-webpack-plugin --save-dev
webpack.config.js
:// Include the copy plugin.
const CopyWebPlugin = require('copy-webpack-plugin');
// ...
experiments: {
// futureDefaults: true, // includes asyncWebAssembly, topLevelAwait etc.
asyncWebAssembly: true
}
// Add the copy plugin to the `plugins` array:
plugins: [
new CopyWebPlugin({
patterns: [
{
from: 'node_modules/@iota/client-wasm/web/wasm/client_wasm_bg.wasm',
to: 'client_wasm_bg.wasm'
}
]
}),
// other plugins...
]
import { init, Client } from "@iota/client-wasm/web";
init().then(() => {
const client = new Client({
nodes: ['https://api.testnet.shimmer.network'],
});
client.getInfo().then(console.log).catch(console.error);
}).catch(console.error);
// Default path to load is "client_wasm_bg.wasm",
// but you can override it by passing a path explicitly.
//
// init("./static/client_wasm_bg.wasm").then(...)
FAQs
WebAssembly bindings for the IOTA client library
We found that @iota/client-wasm demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 12 open source maintainers collaborating on the project.
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