toFunctionHash

import { toFunctionHash } from 'viem'

import { 
function toFunctionHash(fn: string | AbiFunction | AbiEvent): `0x${string}`
Returns the hash (of the function/event signature) for a given event or function definition.
toFunctionHash } from 'viem'
 
const 
const hash_1: `0x${string}`
hash_1 = 
function toFunctionHash(fn: string | AbiFunction | AbiEvent): `0x${string}`
Returns the hash (of the function/event signature) for a given event or function definition.
toFunctionHash('function ownerOf(uint256)')
Output: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
 
// or from an `AbiEvent` on your contract ABI
const 
const hash_2: `0x${string}`
hash_2 = 
function toFunctionHash(fn: string | AbiFunction | AbiEvent): `0x${string}`
Returns the hash (of the function/event signature) for a given event or function definition.
toFunctionHash({
  
name: string
name: 'ownerOf',
  
type: "function"
type: 'function',
  
inputs: readonly AbiParameter[]
inputs: [{ 
name: string
name: 'tokenId', 
type: "uint256"
type: 'uint256' }],
  
outputs: readonly AbiParameter[]
outputs: [],
  
stateMutability: AbiStateMutability
stateMutability: 'view',
})
Output: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef