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Sergey Chernov 2026-07-04 19:36:12 +03:00
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node_modules/
npm-debug.log*
.env
.DS_Store
.idea

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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Ignored default folder with query files
/queries/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
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<module fileurl="file://$PROJECT_DIR$/u-js-sample.iml" filepath="$PROJECT_DIR$/u-js-sample.iml" />
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# u-js-sample
A small Node.js console script project.
## Setup
```sh
npm ci
```
## Run
```sh
npm start -- --name Sergey
```
or directly with Node:
```sh
node src/index.js --name Sergey
```
Generate a Universa key smoke test:
```sh
npm start -- --generate-key
```
Test a Universa network connection with `src/indigo_demo_2025.json`:
```sh
npm start -- --test-network
```
## Check
```sh
npm run check
```

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22
package.json Normal file
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@ -0,0 +1,22 @@
{
"name": "u-js-sample",
"version": "0.1.0",
"description": "A Node.js console script sample.",
"type": "module",
"private": true,
"bin": {
"u-js-sample": "./src/index.js"
},
"scripts": {
"start": "node src/index.js",
"check": "node --check src/index.js"
},
"engines": {
"node": ">=20"
},
"dependencies": {
"commander": "^14.0.2",
"unicrypto": "^1.14.1",
"universa-core": "^1.9.3"
}
}

112
src/index.js Normal file
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@ -0,0 +1,112 @@
#!/usr/bin/env node
import { readFileSync } from 'node:fs';
import { createRequire } from 'node:module';
import { basename, dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';
import { Command } from 'commander';
const require = createRequire(import.meta.url);
const scriptDirectory = dirname(fileURLToPath(import.meta.url));
const topologyFile = resolve(scriptDirectory, 'indigo_demo_2025.json');
const universaCoreDist = resolve(scriptDirectory, '../node_modules/universa-core/dist');
function withTimeout(promise, timeoutMs, message) {
let timeoutId;
const timeout = new Promise((_, reject) => {
timeoutId = setTimeout(() => reject(new Error(message)), timeoutMs);
});
return Promise.race([promise, timeout]).finally(() => clearTimeout(timeoutId));
}
async function withUniversaWasmLoader(callback) {
const fetch = globalThis.fetch;
const read = globalThis.read;
const readBinary = globalThis.readBinary;
globalThis.fetch = undefined;
globalThis.read = (fileName, binary) => {
const wasmPath = resolve(universaCoreDist, basename(fileName));
const data = readFileSync(wasmPath);
return binary ? data : data.toString('binary');
};
globalThis.readBinary = (fileName) => {
const wasmPath = resolve(universaCoreDist, basename(fileName));
return readFileSync(wasmPath);
};
try {
return await callback();
} finally {
globalThis.fetch = fetch;
if (read === undefined) delete globalThis.read;
else globalThis.read = read;
if (readBinary === undefined) delete globalThis.readBinary;
else globalThis.readBinary = readBinary;
}
}
function loadUniversaCore() {
const window = globalThis.window;
globalThis.window = globalThis;
try {
return require('universa-core');
} finally {
if (window === undefined) delete globalThis.window;
else globalThis.window = window;
}
}
function generatePrivateKey() {
return withUniversaWasmLoader(async () => {
const { PrivateKey } = require('unicrypto');
return PrivateKey.generate({ strength: 2048 });
});
}
async function loadTopology(Topology) {
return withUniversaWasmLoader(async () => {
const packedTopology = JSON.parse(readFileSync(topologyFile, 'utf8'));
return Topology.load(packedTopology);
});
}
const program = new Command();
program
.name('u-js-sample')
.description('Example Node.js console script with universa-core functions.')
.option('--generate-key', 'generate a Universa private key and print its short address')
.option('--test-network', 'generate a key and connect to the Universa network from indigo_demo_2025.json')
.action(async (options) => {
if (options.generateKey || options.testNetwork) {
const privateKey = await generatePrivateKey();
console.log(`Universa short address: ${privateKey.publicKey.shortAddress58}`);
if (options.testNetwork) {
const { Network, Topology } = loadUniversaCore();
const topology = await loadTopology(Topology);
const network = new Network(privateKey, { topology, directConnection: true });
console.log(`Connecting with topology: ${topologyFile}`);
await withTimeout(network.connect(), 20000, 'Network connection timed out');
console.log(`Connected to ${network.size()} nodes`);
const response = await withTimeout(network.command('sping'), 10000, 'Network sping command timed out');
console.log(`sping response: ${JSON.stringify(response)}`);
}
}
});
try {
await program.parseAsync();
} catch (error) {
console.error(error instanceof Error ? error.message : error);
process.exitCode = 1;
} finally {
process.exit();
}

49
src/indigo_demo_2025.json Normal file
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@ -0,0 +1,49 @@
{
"list": [
{
"number": 1,
"domain_urls": [
"https://31.41.155.11"
],
"name": "node-01",
"direct_urls": [
"http://31.41.155.11:8080"
],
"key": "HggcAQABxAAB5IfycVepakIjOt3c5eyLFswYH8dokrmHTyRIgaCSz+EY+mm8hM2Cn1PJjyiJj4K1A8CPN9p9mj6z/yyGSH6pvW3HMGs6Az7KvhGbZJlsFP0tNy6A3YQEWP/XToSqtT3f0Ji/r2nYw2zEgnGvOBkkcyN/EEslnxTj1R3fZlaSHh9Uem6NFk62ZxSBj8hJkvfHbTB/XZ2z8wtpwcAJClylITbbCSg9RdXoD8ZwCJMaCWasxfdo5+sMYTcABYFErbw8ndeQ5aL3N2+XiFM8WO5wQnd3SNTYUQGucBkXO5zqmZjnreVOWIsQtKzjwH4WIi57kz+87V72TbDrX0jYMYsOSw=="
},
{
"number": 2,
"domain_urls": [
"https://37.9.5.102"
],
"name": "node-02",
"direct_urls": [
"http://37.9.5.102:8080"
],
"key": "HggcAQABxAAB3GST2bRm2SrwypfKZRplqDwLUvDF7DoRgVMZfzOHzYodHfIpNrRKZfJdr63UdpK6359G1TAAHm52UaLCaCqBZNuFDqE9s9fEe+2UoSzoMKGG0NtgFD2HdDhuNWw4LnqZiZ5lPlZuUKtxVCzhlI0SNweBKMn0oopjdOYfx7hkPHVB2TyADXPrcnxFHEpc6USjJgP3aHPgum4CxYD09KTF59t5W+B+rDpTd/ro3ENBSFi9xlt4qMrLx5KzIdm8IqcsEm+mTYS5mx0F4e6wlCiXElwGe1NdXNwb/A8S2JBSUKP2CfSKdJtB0D7GHFnMuF3+u29/pykBOvlUoUa4S5QxJQ=="
},
{
"number": 3,
"domain_urls": [
"https://37.9.4.133"
],
"name": "node-03",
"direct_urls": [
"http://37.9.4.133:8080"
],
"key": "HggcAQABxAABtTajk8wkzstB+mmj09fkP/a9IqX4tVuuXnd/fO6a3TAjNbulqtkvVyfhu2DeUdUFiYP9kc+YQmHsIe5T/xZgdecWAbHKT0Ok530nLju8dog+75j6aCqD+winCCb+s7dzAYNIsKS0QgBPPWyBUyDL+di17s2Z5U2mibV+sXQYfWU4Gy02WNuavC8QZ0gA7K3Ah6ohR/Yn37WpiWvS+kQOnZF/q/8LYRQgxdDrztzTgpouggwk/1VJ181fYcXq/54n+L5yV2M0GZy7B942ce07MV6EGmQJu4eoOQi8DN3Ee30WOuIIiEyiQLMJjva0uxvkXmlftsr8rGiLXB+kiMd2fQ=="
},
{
"number": 4,
"domain_urls": [
"https://37.9.4.137"
],
"name": "node-04",
"direct_urls": [
"http://37.9.4.137:8080"
],
"key": "HggcAQABxAABkGzNgQnnNh/aNR3zQujD/6mgcqqfZ3tl14DDLhXLunUhc8hkn3y+ViukIj1qbkPi6Ps5irDZ2TzVfepoVWqX+XkI8wUbXKpDN/zWYx9kW4/soA4C7KS6fS/NFsFflUyzDNQeQXmiQkPTNnn43sdSqYb6Zr3I7Wa6mEwIP7MakKo6SbJQ/gTdXPlKWnU1nGJISMowCfhawYQLZgI5URsgS3VV7Owb3Yo4IZ0YNDTceboY4ljYuc/R2LqJcGjcWfSweaHV2T64RY6yQt1W0h2KweK99cflJdh/QSCqBhRdSYYfgKDlmp2ZTvrrfj0bbz2mPBh5JG5RQe+O9MzT0Is4ew=="
}
],
"updated": 1742911675
}

8
u-js-sample.iml Normal file
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@ -0,0 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="GENERAL_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>