watchConnection

Subscribe to connection changes.

Import

import { watchConnection } from '@wagmi/core'

Usage

index.ts

import { watchConnection } from '@wagmi/core'
import { config } from './config'

const unwatch = watchConnection(config, {
  onChange(data) {
    console.log('Connection changed!', data)
  },
})
unwatch()

config.ts

import { createConfig, http } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

Parameters

import { type WatchConnectionParameters } from '@wagmi/core'

onChange

onChange(connection: GetConnectionReturnType, prevConnection: GetConnectionReturnType): void

Callback function called when connection changes.

index.ts

import { watchConnection } from '@wagmi/core'
import { config } from './config'

const unwatch = watchConnection(config, {
  onChange(connection) { 
    console.log('Connection changed!', connection)
  },
})
unwatch()

config.ts

import { createConfig, http } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

Return Type

import { type WatchConnectionReturnType } from '@wagmi/core'

Function for cleaning up watcher.