toFunctionHash

Returns the hash (of the function signature) for a given function definition.

Install

import { toFunctionHash } from 'viem'

Usage

import { toFunctionHash } from 'viem'
 
const hash_1 = toFunctionHash('function ownerOf(uint256)')Output: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
 
// or from an `AbiEvent` on your contract ABI
const hash_2 = toFunctionHash({
  name: 'ownerOf',
  type: 'function',
  inputs: [{ name: 'tokenId', type: 'uint256' }],
  outputs: [],
  stateMutability: 'view',
})Output: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef

Returns

Hex

The hash of the function signature.

Parameters

function

Type: string | AbiFunction

The function to generate a hash for.