Jaco Greeff
2dd7cc0e69
* Make a start * More minor cleanups * Some more cleanups * Last round? * Exclude build folders
28 lines
984 B
JavaScript
28 lines
984 B
JavaScript
/* eslint-disable @typescript-eslint/require-await */
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/* eslint-disable @typescript-eslint/unbound-method */
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/* eslint-disable @typescript-eslint/no-var-requires */
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// Required imports
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const { zip } = require('rxjs');
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const { ApiRx } = require('@polkadot/api');
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const { WsProvider } = require('@polkadot/rpc-provider');
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async function main () {
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// Initialise the provider to connect to the local node
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const provider = new WsProvider('ws://127.0.0.1:9944');
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// Create the API and wait until ready
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const api = await ApiRx.create({ provider }).toPromise();
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// We're using RxJs 'zip()' combination operator to get the emitted values
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// of multiple observables as an array
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zip(
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api.rpc.system.chain(),
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api.rpc.system.name(),
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api.rpc.system.version()
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).subscribe(([chain, nodeName, nodeVersion]) => {
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console.log(`You are connected to chain ${chain} using ${nodeName} v${nodeVersion}`);
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});
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}
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main().catch(console.error).finally(() => process.exit());
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