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README.md

@joystream/types

The types package is required to register the custom Substrate runtime types when working with @polkadot/api to communicate with a Joystream full node.

Installation

Add the package as a dependency in your project.

yarn add @joystream/types

# or

npm install --save @joystream/types

Example usage

import { types } from '@joystream/types'
import { ApiPromise, WsProvider } from '@polkadot/api'

async function main() {
  // Initialise the provider to connect to the local node
  const provider = new WsProvider('ws://127.0.0.1:9944')

  // Create the API and wait until ready
  const api = await ApiPromise.create({ provider, types })

  // Retrieve the chain & node information information via rpc calls
  const [chain, nodeName, nodeVersion] = await Promise.all([
    api.rpc.system.chain(),
    api.rpc.system.name(),
    api.rpc.system.version(),
  ])

  console.log(`Chain ${chain} using ${nodeName} v${nodeVersion}`)
}

main()