@unique-nft/api

Definitely typed JS API for the Unique Network

Install

yarn add @unique-nft/api

npm install @unique-nft/api

Since this project requires the BigInt support, there may be needed some additional bundler settings.

For example, you may need to add the following to your tsconfig.json file:

"compilerOptions" {
...
"target": "es2020",
...
}

For Vite, you can do the same. Example of vite.config.ts:

import { defineConfig } from 'vite'

// https://vitejs.dev/config/
export default defineConfig({
  // ...
  build: {
    target: 'es2020'
  }
})

One more thing before you start, please make sure that you delete the ^ symbol in the package.json file. This is needed to avoid compatibility conflicts. The version of the library must be without this symbol:

"dependencies": {
    "@unique-nft/api": "0.0.7",

Quick Start

Feel free to execute the code below to check some library features.

import {init, Substrate, utils} from '@unique-nft/api'

const run = async () => {
  await init({})

  console.log(utils.address.normalizeSubstrateAddress('yGHGXr2qCKygrxFw16XXEYRLmQwQt8RN8eMN5UuuJ17ZFPosP'))

  const chain = new Substrate.Unique()
  await chain.connect(`wss://quartz.unique.network`)

  console.log(chain.ss58Prefix)
  console.log(chain.coin.format(1_500_000_000_000_000_000n))

  console.log(await chain.getChainProperties())

  await chain.disconnect()
}
run().catch(err => console.error(err))

Initializing

Initializing with Polkadot extension enabling (works only in browser)

import {init} from '@unique-nft/api'

await init({connectToPolkadotExtensionsAs: 'my app'})

or, another way to do the same:

import {init, Substrate} from '@unique-nft/api'

await init()
await Substrate.extension.connectAs('my app')

Signer

An extrinsic may be signed with keyring as well as with an account from the Polkadot extension.

With keyring (available in both browser and Node.js):

import {Substrate, init, WS_RPC} from '@unique-nft/api'

await init()

const chain = new Substrate.Unique()
await chain.connect(WS_RPC.quartz)

const keyring = Substrate.signer.keyringFromSeed('electric suit...')

const result = await chain.transferCoins({toAddress: "5C...", amountInWei: 1_500_000_000_000_000_000n}).signAndSend(keyring)

With the polkadot extension (available in browser only):

import {Substrate, WS_RPC} from '@unique-nft/api'

const quartz = new Substrate.Unique()
const kusama = new Substrate.Common()

await init({connectToPolkadotExtensionsAs: 'my app'})

// we can create instances before init 
// but connect must be invoked only after init call
await quartz.connect(WS_RPC.quartz)
await kusama.connect(WS_RPC.kusama)

const accounts = await Substrate.extension.getAllAccounts()
const account = accounts[0]
// or, better option take some specific account
// accounts.find(account => account.address === '5...')

const KSMTransfer = await kusama.transferCoins({...}).signAndSend(account)

const QTZTransfer = await quartz.transferCoins({...}).signAndSend(account)

Note: in case of Substrate.Unique.transferCoins (but not for Substrate.Common),
we can pass both substrate address (starting from 5 in normal form) and an Ethereum address (starting from 0x...).

Unique's transferCoins (and other functions where it makes sense) can accept any address - substrate or ethereum.

Extrinsics

Substrate class provides methods which take extrinsic parameters and return an Extrinsic instance.

Example:

const result = await quartz
  .transferCoins({toAddress: '5...', amountInWei: 1n})
  .signAndSend(keyringOrAccount)

More verbose example:

const quartz = new Substrate.Unique()
const tx = quartz.transferCoins({toAddress: '5...', amountInWei: 1n})
await tx.sign(keyringOrAccount)
console.log(tx.getRawTx().toJSON())
const result = await tx.send()

All params have typings which can be imported this way:

import {SubstrateMethodsParams} from '@unique-nft/api'

const params: SubstrateMethodsParams.TransferCoins = {
  toAddress: '5...',
  amountInWei: 1n
}

Extrinsic instance fields and methods:

• async sign(signer: KeyringPair | InjectedAccountWithMeta) - returns it's instance
• async send() - returns extrinsic result
• async signAndSend(signer: KeyringPair | InjectedAccountWithMeta) - returns extrinsic result
• isSigned - boolean
• getRawTx() - returns SubmittableExtrinsic object