Configuration | JS API Reference

The JavaScript SDK can be configured with a variety of options. These options can be set globally, or on a per-instance basis.

Initialization

Initializing the Mirror World SDK only requires 2 properties in the MirrorWorld constructor object:

apiKey - Project's API Key acquired from the developer dashboard
chainConfig - Chain configuration object for the chain you would like to use. (The chain configuration can also be modified after initialization)

Multichain Configuration

The Mirror World JS SDK exports configuration factories for following multiple chains:

Solana - Solana chain configuration
Ethereum - Ethereum chain configuration
BNBChain - BNB Chain configuration
Polygon - Polygon chain configuration

Learn more about Mirror World's Multichain Support Matrix here

Below is an example of how to initialize the SDK with a Solana Configuration for the mainnet-beta network.

import { MirrorWorld, Solana } from "@usemirrorworld/web3.js"
const mirrorworld = new MirrorWorld({
  apiKey: "YOUR_API_KEY",
  chainConfig: Solana("mainnet-beta"),
})

After assigning this configuration, you can now invoke Solana methods with the SDK.

Chain / Network Configurations

The table below shows the network names configuration parameters accepted by the corresponding chain.

Chain	Mainnet name	Testnet name
`Solana`	`mainnet-beta`	`devnet`
`Polygon`	`mumbai-mainnet`	`mumbai-testnet`
`BNBChain`	`bnb-mainnet`	`bnb-testnet`
`Ethereum`	`mainnet`	`goerli`

For example, below is an example of how to initialize the SDK on Polygon Testnet and mint an NFT

import { MirrorWorld, Polygon } from "@usemirrorworld/web3.js"
const mirrorworld = new MirrorWorld({
  apiKey: "YOUR_API_KEY",
  chainConfig: Polygon("mumbai-testnet"),
})
await mirrorworld.Polygon.Asset.mintNFT(/** ... */)

Configuration Options

export interface MirrorWorldOptions {
  /**
   * API Key used to authenticate your API requests to Mirror World.
   */
  apiKey: string
  /**
   * Chain configuration for Mirror World SDK
   */
  chainConfig: ChainConfig<ChainTypes>
  /**
   * Authentication options
   */
  auth?: {
    // Authentication token
    authToken?: string
    // Developer Secret Access Key. Used when interacting with the SDK on the server-side.
    secretAccessKey?: string
  }
  /**
   * When passed, the Mirror World SDK will automatically log in
   * the user using their `refresh_token`. This expects the
   * refresh token returned with the user when logging in.
   */
  autoLoginCredentials?: string
  /**
   * Wallet UI configuration options
   */
  walletUIConfig?: {
    /**
     * When the `uxMode` is set to `popup`, it uses a new window when interacting with the Wallet UI.
     * When the `uxMode` is set to `embedded`, it uses an iframe when interacting with the Wallet UI.
     */
    uxMode: "popup" | "embedded"
  }
}

Usage with Node.js

When using the Mirror World Smart SDK with Node.js, you may need to authenticate the SDK with your API Key and Secret Access Key.

Providing this token will bypass approval for developer wallets. Learn more about the Secret Access Key.

import { MirrorWorld, Polygon } from "@usemirrorworld/web3.js"
const mirrorworld = new MirrorWorld({
  apiKey: "YOUR_API_KEY",
  chainConfig: Polygon("mumbai-testnet"),
  auth: {
    secretAccessKey: "YOUR_SECRET_ACCESS_KEY",
  },
})

Advanced Concepts

Dynamic Chain Configuration

When building multichain applciations with the Mirror World SDK, you may encounter some scenarios where you may want to switch from one chain to another. To perform this kind of switch, you can reassign the chainConfig property on the MirrorWorld instance:

// Reassigns chain config to Solana devnet
mirrorworld.chainConfig = Solana("devnet")
console.log(mirrorworld.chainConfig) // { chain: "solana", network: "devnet" }
// Reassigns chain config to Ethereum mainnet
mirrorworld.chainConfig = Ethereum("mainnet")
console.log(mirrorworld.chainConfig) // { chain: "ethereum", network: "mainnet" }
// Reassigns chain config to BNB Chain mainnet
mirrorworld.chainConfig = BNBChain("bnb-mainnet")
console.log(mirrorworld.chainConfig) // { chain: "bnb", network: "bnb-mainnet" }

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