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utils.ts
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utils.ts
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import { providers } from 'ethers'
import { useEffect, useState } from 'react'
import { useAccount as useWagmiAccount, useNetwork } from 'wagmi'
export const EMPTY_ARRAY = []
export type Token = {
chainId: ChainId
address: string
}
// override wagmi's useAccount to work with NextJS SSR
// https://github.com/wagmi-dev/wagmi/issues/542
export function useAccount() {
const { address, connector, isConnected } = useWagmiAccount()
const { chain } = useNetwork()
const [isLoaded, setLoaded] = useState(false)
useEffect(() => {
setLoaded(true)
}, [])
return { isLoaded, address: isLoaded ? address : null, connector, isConnected, chain: isLoaded ? chain : null }
}
export enum ChainId {
Mainnet = 1,
Goerli = 5,
ArbitrumOne = 42161,
Optimism = 10,
Polygon = 137,
PolygonMumbai = 80001,
}
export function isPolygonChain(chainId: number): chainId is ChainId.Polygon | ChainId.PolygonMumbai {
return chainId === ChainId.PolygonMumbai || chainId === ChainId.Polygon
}
export function areAddressesEqual(a1?: string | null, a2?: string | null): boolean {
return a1 !== null && a2 !== null && a1 === a2
}
/** Alternative addres used to denote a native currency (e.g. MATIC on Polygon) */
export const NATIVE_ADDRESS_ALT = '0x0000000000000000000000000000000000001010'
/** Address that represents native currencies on ETH, Polygon, etc. */
export const NATIVE_ADDRESS = '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'
export const isNativeCurrencyAddress = (chainId: ChainId, address?: string | null) => {
if (!address) return true
return isPolygonChain(chainId)
? areAddressesEqual(address, NATIVE_ADDRESS_ALT)
: areAddressesEqual(address, NATIVE_ADDRESS)
}
// graphql chain names
export enum Chain {
Arbitrum = 'ARBITRUM',
Celo = 'CELO',
Ethereum = 'ETHEREUM',
EthereumGoerli = 'ETHEREUM_GOERLI',
Optimism = 'OPTIMISM',
Polygon = 'POLYGON',
}
export function fromGraphQLChain(chain: Chain | undefined): ChainId | null {
switch (chain) {
case Chain.Ethereum:
return ChainId.Mainnet
case Chain.Arbitrum:
return ChainId.ArbitrumOne
case Chain.EthereumGoerli:
return ChainId.Goerli
case Chain.Optimism:
return ChainId.Optimism
case Chain.Polygon:
return ChainId.Polygon
}
return null
}
export async function resolveENS(provider: providers.Provider, squad: string[]): Promise<string[]> {
const resolved = []
for (var i = 0; i < squad.length; i++) {
if (squad[i].endsWith('.eth')) {
const resolvedAddress = await provider.resolveName(squad[i])
if (!resolvedAddress) {
throw new Error('No address found for ENS')
}
resolved[i] = resolvedAddress
} else {
resolved[i] = squad[i]
}
}
return resolved
}