Michael Freno
7c684a42cc
- Consolidated duplicate UndoManagers to single instance - Fixed connection promise to only resolve on 'connected' status - Fixed WebSocketProvider import (WebsocketProvider) - Added proper doc.destroy() cleanup - Renamed isPresenceInitialized property to avoid conflict Co-Authored-By: Paperclip <noreply@paperclip.ing>
81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
import type { Address } from 'abitype'
|
|
|
|
import type { Client } from '../../clients/createClient.js'
|
|
import type { Transport } from '../../clients/transports/createTransport.js'
|
|
import type { ErrorType } from '../../errors/utils.js'
|
|
import type { BlockTag } from '../../types/block.js'
|
|
import type { Chain } from '../../types/chain.js'
|
|
import {
|
|
type GetAddressErrorType,
|
|
getAddress,
|
|
} from '../../utils/address/getAddress.js'
|
|
import { type SizeErrorType, size } from '../../utils/data/size.js'
|
|
import { type SliceErrorType, slice } from '../../utils/data/slice.js'
|
|
import { type GetCodeErrorType, getCode } from './getCode.js'
|
|
|
|
export type GetDelegationParameters = {
|
|
/** The address to check for delegation. */
|
|
address: Address
|
|
} & (
|
|
| {
|
|
blockNumber?: undefined
|
|
blockTag?: BlockTag | undefined
|
|
}
|
|
| {
|
|
blockNumber?: bigint | undefined
|
|
blockTag?: undefined
|
|
}
|
|
)
|
|
|
|
export type GetDelegationReturnType = Address | undefined
|
|
|
|
export type GetDelegationErrorType =
|
|
| GetAddressErrorType
|
|
| GetCodeErrorType
|
|
| SliceErrorType
|
|
| SizeErrorType
|
|
| ErrorType
|
|
|
|
/**
|
|
* Returns the address that an account has delegated to via EIP-7702.
|
|
*
|
|
* - Docs: https://viem.sh/docs/actions/public/getDelegation
|
|
*
|
|
* @param client - Client to use
|
|
* @param parameters - {@link GetDelegationParameters}
|
|
* @returns The delegated address, or undefined if not delegated. {@link GetDelegationReturnType}
|
|
*
|
|
* @example
|
|
* import { createPublicClient, http } from 'viem'
|
|
* import { mainnet } from 'viem/chains'
|
|
* import { getDelegation } from 'viem/actions'
|
|
*
|
|
* const client = createPublicClient({
|
|
* chain: mainnet,
|
|
* transport: http(),
|
|
* })
|
|
* const delegation = await getDelegation(client, {
|
|
* address: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
|
|
* })
|
|
*/
|
|
export async function getDelegation<chain extends Chain | undefined>(
|
|
client: Client<Transport, chain>,
|
|
{ address, blockNumber, blockTag = 'latest' }: GetDelegationParameters,
|
|
): Promise<GetDelegationReturnType> {
|
|
const code = await getCode(client, {
|
|
address,
|
|
...(blockNumber !== undefined ? { blockNumber } : { blockTag }),
|
|
} as GetDelegationParameters)
|
|
|
|
if (!code) return undefined
|
|
|
|
// EIP-7702 delegation designator: 0xef0100 prefix (3 bytes) + address (20 bytes) = 23 bytes
|
|
if (size(code) !== 23) return undefined
|
|
|
|
// Check for EIP-7702 delegation designator prefix
|
|
if (!code.startsWith('0xef0100')) return undefined
|
|
|
|
// Extract the delegated address (bytes 3-23) and checksum it
|
|
return getAddress(slice(code, 3, 23))
|
|
}
|