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toFunctionSignature

Returns the signature for a given function definition.

Install

import { toFunctionSignature } from 'viem'

Usage

import { toFunctionSignature } from 'viem'
 
// from function definition
const signature_1 = toFunctionSignature('function ownerOf(uint256 tokenId)')

Output: ownerOf(uint256)
 // from an `AbiFunction` on your contract ABI
const signature_2 = toFunctionSignature({
  name: 'ownerOf',
  type: 'function',
  inputs: [{ name: 'tokenId', type: 'uint256' }],
  outputs: [],
  stateMutability: 'view',
})

Output: ownerOf(uint256)

Returns

string

The signature as a string value.

Parameters

definition

  • Type: string | AbiFunction

The function definition to generate a signature for.