toFunctionSignature

import { toFunctionSignature } from 'viem'

import { 
const toFunctionSignature: (def: string | AbiFunction | AbiEvent) => string
Returns the signature for a given function or event definition.
toFunctionSignature } from 'viem'
 
// from function definition
const 
const signature_1: string
signature_1 = 
function toFunctionSignature(def: string | AbiFunction | AbiEvent): string
Returns the signature for a given function or event definition.
toFunctionSignature('function ownerOf(uint256 tokenId)')
Output: ownerOf(uint256)
 
// from an `AbiFunction` on your contract ABI
const 
const signature_2: string
signature_2 = 
function toFunctionSignature(def: string | AbiFunction | AbiEvent): string
Returns the signature for a given function or event definition.
toFunctionSignature({
  
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: ownerOf(uint256)