You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34 lines
1.3 KiB
34 lines
1.3 KiB
import type { ErrorType } from '../../errors/utils.js'
|
|
import {
|
|
type StringToBytesErrorType,
|
|
stringToBytes,
|
|
} from '../encoding/toBytes.js'
|
|
import { type BytesToHexErrorType, bytesToHex } from '../encoding/toHex.js'
|
|
import { type Keccak256ErrorType, keccak256 } from '../hash/keccak256.js'
|
|
import {
|
|
type EncodedLabelToLabelhashErrorType,
|
|
encodedLabelToLabelhash,
|
|
} from './encodedLabelToLabelhash.js'
|
|
|
|
export type LabelhashErrorType =
|
|
| BytesToHexErrorType
|
|
| EncodedLabelToLabelhashErrorType
|
|
| Keccak256ErrorType
|
|
| StringToBytesErrorType
|
|
| ErrorType
|
|
|
|
/**
|
|
* @description Hashes ENS label
|
|
*
|
|
* - Since ENS labels prohibit certain forbidden characters (e.g. underscore) and have other validation rules, you likely want to [normalize ENS labels](https://docs.ens.domains/contract-api-reference/name-processing#normalising-names) with [UTS-46 normalization](https://unicode.org/reports/tr46) before passing them to `labelhash`. You can use the built-in [`normalize`](https://viem.sh/docs/ens/utilities/normalize) function for this.
|
|
*
|
|
* @example
|
|
* labelhash('eth')
|
|
* '0x4f5b812789fc606be1b3b16908db13fc7a9adf7ca72641f84d75b47069d3d7f0'
|
|
*/
|
|
export function labelhash(label: string) {
|
|
const result = new Uint8Array(32).fill(0)
|
|
if (!label) return bytesToHex(result)
|
|
return encodedLabelToLabelhash(label) || keccak256(stringToBytes(label))
|
|
}
|