casper-cep78-js-client

casper-cep78-js-client

This package was created to help JS/TS users with the cep-78-enhanced-nft and is published in npm as the casper-cep78-js-client. It was built on top of the casper-js-sdk.

Users can treat this package as a deploy builder for all of these possible interactions:

• contract installation including different configurations
• token minting
• token transfers
• token burning
• approvals
• changing configurations after installation
• setting token metadata
• storing some of the contract-related data in an Account's NamedKeys

Usage

• To install, run:

  npm i -S casper-cep78-js-client

• Import the contract in your code:

  import { CEP78Client } from 'casper-cep78-js-client'

• If you want to install it, look at the install method and all of the possible configuration options (InstallArgs).

• If you want to start working with a previously installed contract, use the setContractHash(contractHash) method.

NOTE: Since version 1.3 both casper-js-sdk and @make-software/ces-js-parser are peer dependencies. If you are using npm version <7 you may need to install both dependencies manually.

Examples

As a good starting point, you can look into the examples/ directory to see the most common usage scenarios (install.ts and usage.ts). You can install the contract and run the example scenario by running the npm run example:install and npm run example:usage. You will need to specify environment variables, preferebly in a client-js/.env file. Here are some example values for the environment variables that need to be specified:

NODE_URL=http://localhost:11101/rpc
NETWORK_NAME=casper-net-1
MASTER_KEY_PAIR_PATH=/Users/someuser/.casper/casper-node/utils/nctl/assets/net-1/faucet
USER1_KEY_PAIR_PATH=/Users/someuser/.casper/casper-node/utils/nctl/assets/net-1/users/user-1

Events Handling

As CEP-78 1.2 supports two events modes - CEP47 and CES we have two parsers as a part of this SDK.

• Example usage of CEP47 parser

import { EventStream, EventName } from 'casper-js-sdk';
import { CEP47EventParserFactory, CEP47Events } from 'casper-cep78-js-sdk';

const cep47EventParser = CEP47EventParserFactory({
  contractPackageHash,
  eventNames: [
    CEP47Events.Mint,
    CEP47Events.Transfer,
    CEP47Events.Burn
  ],
});

const es = new EventStream(EVENT_STREAM_ADDRESS);

es.subscribe(EventName.DeployProcessed, async (event) => {
  const parsedEvents = cep47EventParser(event);

  if (parsedEvents?.success) {
    console.log(parsedEvents.data);
  }
});

es.start();

• Example usage of CES parser

import { EventStream, EventName, CasperServiceByJsonRPC } from 'casper-js-sdk';
import { CESEventParserFactory } from 'casper-cep78-js-sdk';

const casperClient = new CasperServiceByJsonRPC(NODE_URL);

const cesEventParser = CESEventParserFactory({
  contractHashes: [contractHash],
  casperClient,
});

const es = new EventStream(EVENT_STREAM_ADDRESS);
es.subscribe(EventName.DeployProcessed, async (event) => {
  const parsedEvents = await cesEventParser(event);

  if (parsedEvents?.success) {
    console.log(parsedEvents.data);
  }
});
es.start();