tsCopyEditimport { Buffer } from 'buffer'
global.Buffer = Buffer
Then, import this shim in your entry point (e.g. before your App.tsx is rendered):
tsCopyEditimport './shim'
After installing the dependencies, we can register the cheqd module on the agent by adding the below code snippet to the agent constructor.
import { Agent, DidsModule, KeyType, DidDocument } from '@credo-ts/core'
import { agentDependencies } from '@credo-ts/node'
import { AskarModule } from '@credo-ts/askar'
import { askar } from '@openwallet-foundation/askar-nodejs'
import {
ConnectionsModule,
V2ProofProtocol,
V2CredentialProtocol,
ProofsModule,
AutoAcceptProof,
AutoAcceptCredential,
CredentialsModule,
HttpOutboundTransport,
getDefaultDidcommModules,
} from '@credo-ts/didcomm'
import {
CheqdAnonCredsRegistry,
CheqdDidRegistrar,
CheqdDidResolver,
CheqdModule,
CheqdModuleConfig,
} from '@credo-ts/cheqd'
import { AnonCredsModule } from '@credo-ts/anoncreds'
import { anoncreds } from '@hyperledger/anoncreds-nodejs'
const agent = new Agent({
config,
dependencies: agentDependencies,
modules: {
dids: new DidsModule({
registrars: [new CheqdDidRegistrar()],
resolvers: [new CheqdDidResolver()],
}),
// AnonCreds
anoncreds: new AnonCredsModule({
registries: [new CheqdAnonCredsRegistry()],
anoncreds,
}),
// Add cheqd module
cheqd: new CheqdModule(
new CheqdModuleConfig({
networks: [
{
network: '<mainnet or testnet>',
cosmosPayerSeed: '<cosmos payer seed or mnemonic>',
},
],
})
),
// Indy VDR can optionally be used with Askar as wallet and storage implementation
askar: new AskarModule({
askar,
}),
connections: new ConnectionsModule({
autoAcceptConnections: true,
}),
credentials: new CredentialsModule({
autoAcceptCredentials: AutoAcceptCredential.ContentApproved,
credentialProtocols: [
new V2CredentialProtocol({
credentialFormats: [new LegacyIndyCredentialFormatService(), new AnonCredsCredentialFormatService()],
}),
],
}),
},
})
The cosmosPayerSeed can be a 32-bit seed value or mnemonic. It can be managed using Leap wallet, which is available as a mobile app or browser extension for Chrome and Safari. Leap enables users to create accounts, exchange tokens, etc. To setup Leap wallet for cheqd follow the tutorial below:
Next steps
Now that your Credo agent is successfully set up to work with cheqd, try following our tutorials for creating a new DID or issuing Verifiable Credentials.
