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• .. (вверх)
• [DIR] ..
• [FILE] hashSignature.ts
• [FILE] isHash.ts
• [FILE] keccak256.ts
• [FILE] normalizeSignature.ts
• [FILE] ripemd160.ts
• [FILE] sha256.ts
• [FILE] toEventHash.ts
• [FILE] toEventSelector.ts
• [FILE] toEventSignature.ts
• [FILE] toFunctionHash.ts
• [FILE] toFunctionSelector.ts
• [FILE] toFunctionSignature.ts
• [FILE] toSignature.ts
• [FILE] toSignatureHash.ts

Просмотр файла: toFunctionSelector.ts

import type { AbiFunction } from 'abitype'

import type { ErrorType } from '../../errors/utils.js'
import { type SliceErrorType, slice } from '../data/slice.js'
import {
  type ToSignatureHashErrorType,
  toSignatureHash,
} from './toSignatureHash.js'

export type ToFunctionSelectorErrorType =
  | ToSignatureHashErrorType
  | SliceErrorType
  | ErrorType

/**
 * Returns the function selector for a given function definition.
 *
 * @example
 * const selector = toFunctionSelector('function ownerOf(uint256 tokenId)')
 * // 0x6352211e
 */
export const toFunctionSelector = (fn: string | AbiFunction) =>
  slice(toSignatureHash(fn), 0, 4)

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