⚙️ Ternoa SDK

The easiest and fastest way to build on top of Ternoa Chain.

Installation

Node.js

npm install ternoa-js

This package provides TypeScript types, but you will need TypeScript version 4.2 or higher to use them properly.

Quick Start

An API instance must be initialize using the initializeApi function in ternoa-js/blockchain before calling some SDK functions. The default chain endpoint is: DEFAULT_CHAIN_ENDPOINT = "wss://alphanet.ternoa.com". It can be modified by passing a new endpoint as a parameter to the initializeApi function.

Functions are organized by theme. In the example below, the import of generateSeed and getKeyringFromSeed from the subpath ternoa-js/account allows us to generate a new account and display its address.

import { generateSeed, getKeyringFromSeed } from "ternoa-js/account"
;(async () => {
  const account = await generateSeed()
  const keyring = await getKeyringFromSeed(account.seed)
  const address = keyring.address
  console.log("Your fresh public address is: ", address)
})().catch((e) => {
  console.log(e)
})

Among all the features provided by the Ternoa SDK, this short snippet of code allows you to create an NFT, submit and sign it at a glance. This single line createNft function, require a few parameters : some offchainData metadatas, a royalty, a collectionId if you want this NFT to belong to a collection, a boolean to define its isSoulbound status, the keyring to sign and submit the transaction, and a waitUntil callback parameter, to define at which point we want to get the results of the transaction execution.

import { createNft } from "ternoa-js/nft"
import { generateSeed, getKeyringFromSeed } from "ternoa-js/account"

const createMyFirstNFT = async () => {
  try {
    // We initialize an API instance connected to the Alphanet chain
    await initializeApi()

    // Here we create, sign and submit the NFT transaction with your keyring
    await createNft("My first NFT", 10, undefined, false, keyring, WaitUntil.BlockInclusion)
  } catch (e) {
    console.log(e)
  }
}

Documentation

The official SDK documentation is available: ternoa-js sdk documentation. Additional resources are available on the ternoa official documentation.

Discover our End-to-End Test dApp here to learn and test the Ternoa SDK : ternoa-js-test-dapp.

Cookbook example

If you are looking for a quick overview about the basic-usage of the Ternoa SDK, some explications or the best-practices, and how to create your first NFT, we recommand you to look at the exemple section cookbook/basic-usage

SDK Development

Building

To build a new version of the library, run:

npm run build

Generating Documentation

To generate the documentation website, run:

npm run docs

The static website will be located in the docs/ directory.

Testing

The test suites relies on testing pairs located in the testingPairs.ts file. In order to prepare those pairs, the two scripts test-setup.ts and test-teardown.ts respectively fulfilled and emptied them with CAPS. Environment variables SEED_TEST_FUNDS and SEED_TEST_FUNDS_PUBLIC_KEY have to be define to run the test suites.

To run the test suites, run:

npm run test

Code Style

This project uses recommended ESLint and Typescript rules to ensure coding good practices.

We've setup linters and formatters to help catch errors and improve the development experience:

• Prettier – ensures that code is formatted in a readable way.
• ESLint — checks code for antipatterns as well as formatting.

Husky proceeds some checks before pushing a new commit. It ensures that: the project is building, there are no linter/formatting issues and the test suites are not broken.

If you use Visual Studio Code editor we suggest you to install ESLint and Prettier extensions.

License

ternoa-js uses an Apache-2.0 License.