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>
53 lines
1.9 KiB
TypeScript
53 lines
1.9 KiB
TypeScript
import type { ErrorType } from '../../errors/utils.js'
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import type { ByteArray } from '../../types/misc.js'
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import { type ConcatErrorType, concat } from '../data/concat.js'
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import {
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type StringToBytesErrorType,
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stringToBytes,
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type ToBytesErrorType,
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toBytes,
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} from '../encoding/toBytes.js'
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import { type BytesToHexErrorType, bytesToHex } from '../encoding/toHex.js'
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import { type Keccak256ErrorType, keccak256 } from '../hash/keccak256.js'
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import {
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type EncodedLabelToLabelhashErrorType,
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encodedLabelToLabelhash,
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} from './encodedLabelToLabelhash.js'
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export type NamehashErrorType =
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| BytesToHexErrorType
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| EncodedLabelToLabelhashErrorType
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| ToBytesErrorType
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| Keccak256ErrorType
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| StringToBytesErrorType
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| ConcatErrorType
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| ErrorType
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/**
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* @description Hashes ENS name
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*
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* - Since ENS names prohibit certain forbidden characters (e.g. underscore) and have other validation rules, you likely want to [normalize ENS names](https://docs.ens.domains/contract-api-reference/name-processing#normalising-names) with [UTS-46 normalization](https://unicode.org/reports/tr46) before passing them to `namehash`. You can use the built-in [`normalize`](https://viem.sh/docs/ens/utilities/normalize) function for this.
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*
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* @example
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* namehash('wevm.eth')
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* '0x08c85f2f4059e930c45a6aeff9dcd3bd95dc3c5c1cddef6a0626b31152248560'
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*
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* @link https://eips.ethereum.org/EIPS/eip-137
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*/
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export function namehash(name: string) {
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let result = new Uint8Array(32).fill(0) as ByteArray
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if (!name) return bytesToHex(result)
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const labels = name.split('.')
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// Iterate in reverse order building up hash
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for (let i = labels.length - 1; i >= 0; i -= 1) {
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const hashFromEncodedLabel = encodedLabelToLabelhash(labels[i])
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const hashed = hashFromEncodedLabel
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? toBytes(hashFromEncodedLabel)
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: keccak256(stringToBytes(labels[i]), 'bytes')
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result = keccak256(concat([result, hashed]), 'bytes')
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}
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return bytesToHex(result)
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}
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