Ethereum Provider

You can interact with EVM-based blockchains using Ethers.js or Web3.js together with the Wepin Provider.

Supported Networks

Is the blockchain you need not listed? Please contact the Wepin team for blockchain support.

Chain ID	Network Name	Network Variable
1	Ethereum Mainnet	ethereum
5	Ethereum Goerli Testnet	evmeth-goerli
8217	Kaia Mainnet	klaytn
1001	Kaia Kairos Testnet	klaytn-testnet
19	Songbird Canary Network	evmsongbird
137	Polygon Mainnet	evmpolygon
248	Oasys	evmoasys-games
34	XPLA Mainnet	evmxpla
7300	XPLA Verse Mainnet	evmxpla-verse
2731	TimeNetwork Testnet	evmtime-elizabeth
11155111	Ethereum Sepolia Testnet	evmeth-sepolia
80002	Polygon Amoy Testnet	evmpolygon-amoy
9372	Oasys Testnet	evmoasys-games-testnet
47	XPLA Testnet	evmxpla-testnet
2225	XPLA Verse Testnet	evmxpla-verse-testnet
204	opBNB Mainnet	evmopbnb
56	Binance Smart Chain	evmbsc
97	BSC-TESTNET	evmbsc-testnet
5611	opBNB Testnet	evmopbnb-testnet
656476	Open Campus Testnet	evmopencampus-testnet
43114	Avalanche	evmavax-c-chain

Installation

npm

npm install @wepin/provider-js

yarn

yarn add @wepin/provider-js

Once the installation is complete, initialize the WepinProvider instance using the app ID and app key assigned after registering the app. This will enable the use of WepinProvider.

// 1. Import the package
import { WepinProvider } from '@wepin/provider-js'

// 2. Initialization
const WepinProvider = new WepinProvider({
    appId: 'your-wepin-app-id',
    appKey: 'your-wepin-api-key',
})

Initialization

Here's how to initialize the Wepin Provider.

init

await wepinProvider.init(attributes?)

Parameters

• attributes <object> optional

  • defaultLanguage: The language to be displayed on the widget (default: 'ko') Currently, only 'ko' , 'en' and 'ja' are supported.

  • defaultCurrency: The currency to be displayed on the widget (default: 'KRW') Currently, only 'KRW' 'USD' and 'JPY' are supported.

Return value

• Promise<void>

Example

await wepinProvider.init({
    defaultLanguage: 'ko',
    defaultCurrency: 'KRW',
})

isInitialized

It checks if WepinProvider is initialized properly.

wepinProvider.isInitialized()

Parameters

• <void>

Return value

• <boolean> Returns true if init was successful, otherwise returns false.

Example

if(wepinProvider.isInitialized()) {
  console.log('wepinProvider is initialized!')
}

changeLanguage

It allows changing the language and currency of the widget.

wepinProvider.changeLanguage(attributes)

Parameters

• attributes <object>

  • language <string> It specifies the language to be displayed on the widget. Currently supported languages are en , ko and ja.

  • currency <string> It specifies the currency to be displayed on the widget. Currently supported currencies are USD , KRW and JPY.

Return value

• <boolean> It returns true if the change was successful, otherwise returns false.

Example

if(wepinProvider.isInitialized()) {
  console.log('wepinProvider is initialized!')
}

Methods

Methods can be used after initializing the Wepin Provider.

getProvider

It returns the provider for the specified network.

await wepinProvider.getProvider(network)

Parameters

• network <string> The Network Variable value for providers supported by Wepin, such as "ethereum" for Ethereum Mainnet, must be entered in lowercase. For the complete list, please refer to the "Supported Networks for Ethereum Provider."

Return value

• Promise<BaseProvider> - A EIP-1193 provider

Example

const provider = await wepinProvider.getProvider('ethereum')

finalize

It terminates the use of WepinProvider.

wepinProvider.finalize()

Parameters

• <void>

Return value

• <void>

Example

wepinProvider.finalize()

For more details on EVM-compatible network providers, please refer to the link below.

EIP-1193: Ethereum Provider JavaScript APIEthereum Improvement Proposals