import { type AbiEvent, type AbiFunction, formatAbiItem } from 'abitype' import type { ErrorType } from '../../errors/utils.js' import { type NormalizeSignatureErrorType, normalizeSignature, } from './normalizeSignature.js' export type ToSignatureErrorType = NormalizeSignatureErrorType | ErrorType /** * Returns the signature for a given function or event definition. * * @example * const signature = toSignature('function ownerOf(uint256 tokenId)') * // 'ownerOf(uint256)' * * @example * const signature_3 = toSignature({ * name: 'ownerOf', * type: 'function', * inputs: [{ name: 'tokenId', type: 'uint256' }], * outputs: [], * stateMutability: 'view', * }) * // 'ownerOf(uint256)' */ export const toSignature = (def: string | AbiFunction | AbiEvent) => { const def_ = (() => { if (typeof def === 'string') return def return formatAbiItem(def) })() return normalizeSignature(def_) }