Detect ETH token standard

detect_standard.js

async function detectStandard() {
  // Check if the contract implements the ERC-20 interface
  if (implementsERC20(abiERC20)) {
    return 'ERC-20';
  }

  // Check if the contract implements the ERC-721 interface
  if (implementsERC721(abiERC721)) {
    return 'ERC-721';
  }

  // Check if the contract implements the ERC-1155 interface
  if (implementsERC1155(abiERC1155)) {
    return 'ERC-1155';
  }

  return 'unknown';
}

function implementsERC20(abi) {
  // Check if the ABI includes the required functions for the ERC-20 interface
  return (
    abi.filter(
      (item) => item.name === 'transfer' && item.inputs.length === 2 && item.inputs[0].type === 'address' && item.inputs[1].type === 'uint256',
    ).length > 0
    && abi.filter(
      (item) => item.name === 'transferFrom' && item.inputs.length === 3 && item.inputs[0].type === 'address' && item.inputs[1].type === 'address' && item.inputs[2].type === 'uint256',
    ).length > 0
    && abi.filter(
      (item) => item.name === 'balanceOf' && item.inputs.length === 1 && item.inputs[0].type === 'address',
    ).length > 0
  );
}

function implementsERC721(abi) {
  // Check if the ABI includes the required functions for the ERC-721 interface
  return (
    abi.filter(
      (item) => item.name === 'transferFrom' && item.inputs.length === 3 && item.inputs[0].type === 'address' && item.inputs[1].type === 'address' && item.inputs[2].type === 'uint256',
    ).length > 0
    && abi.filter(
      (item) => item.name === 'balanceOf' && item.inputs.length === 1 && item.inputs[0].type === 'address',
    ).length > 0
    && abi.filter(
      (item) => item.name === 'ownerOf' && item.inputs.length === 1 && item.inputs[0].type === 'uint256',
    ).length > 0
  );
}

function implementsERC1155(abi) {
  // Check if the ABI includes the required functions for the ERC-1155 interface
  return (
    abi.filter(
      (item) => item.name === 'safeBatchTransferFrom' && item.inputs.length === 4 && item.inputs[0].type === 'address' && item.inputs[1].type === 'address' && item.inputs[2].type === 'uint256[]' && item.inputs[3].type === 'uint256[]',
    ).length > 0
    && abi.filter(
      (item) => item.name === 'balanceOf' && item.inputs.length === 2 && item.inputs[0].type === 'address' && item.inputs[1].type === 'uint256',
    ).length > 0
  );
}


export const abiERC1155 = [
  {
    inputs: [
      {
        internalType: 'string',
        name: 'uri_',
        type: 'string',
      },
    ],
    stateMutability: 'nonpayable',
    type: 'constructor',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: 'address',
        name: 'account',
        type: 'address',
      },
      {
        indexed: true,
        internalType: 'address',
        name: 'operator',
        type: 'address',
      },
      {
        indexed: false,
        internalType: 'bool',
        name: 'approved',
        type: 'bool',
      },
    ],
    name: 'ApprovalForAll',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: 'address',
        name: 'operator',
        type: 'address',
      },
      {
        indexed: true,
        internalType: 'address',
        name: 'from',
        type: 'address',
      },
      {
        indexed: true,
        internalType: 'address',
        name: 'to',
        type: 'address',
      },
      {
        indexed: false,
        internalType: 'uint256[]',
        name: 'ids',
        type: 'uint256[]',
      },
      {
        indexed: false,
        internalType: 'uint256[]',
        name: 'values',
        type: 'uint256[]',
      },
    ],
    name: 'TransferBatch',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        internalType: 'address',
        name: 'operator',
        type: 'address',
      },
      {
        indexed: true,
        internalType: 'address',
        name: 'from',
        type: 'address',
      },
      {
        indexed: true,
        internalType: 'address',
        name: 'to',
        type: 'address',
      },
      {
        indexed: false,
        internalType: 'uint256',
        name: 'id',
        type: 'uint256',
      },
      {
        indexed: false,
        internalType: 'uint256',
        name: 'value',
        type: 'uint256',
      },
    ],
    name: 'TransferSingle',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: false,
        internalType: 'string',
        name: 'value',
        type: 'string',
      },
      {
        indexed: true,
        internalType: 'uint256',
        name: 'id',
        type: 'uint256',
      },
    ],
    name: 'URI',
    type: 'event',
  },
  {
    inputs: [
      {
        internalType: 'address',
        name: 'account',
        type: 'address',
      },
      {
        internalType: 'uint256',
        name: 'id',
        type: 'uint256',
      },
    ],
    name: 'balanceOf',
    outputs: [
      {
        internalType: 'uint256',
        name: '',
        type: 'uint256',
      },
    ],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'address[]',
        name: 'accounts',
        type: 'address[]',
      },
      {
        internalType: 'uint256[]',
        name: 'ids',
        type: 'uint256[]',
      },
    ],
    name: 'balanceOfBatch',
    outputs: [
      {
        internalType: 'uint256[]',
        name: '',
        type: 'uint256[]',
      },
    ],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'address',
        name: 'account',
        type: 'address',
      },
      {
        internalType: 'address',
        name: 'operator',
        type: 'address',
      },
    ],
    name: 'isApprovedForAll',
    outputs: [
      {
        internalType: 'bool',
        name: '',
        type: 'bool',
      },
    ],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'address',
        name: 'from',
        type: 'address',
      },
      {
        internalType: 'address',
        name: 'to',
        type: 'address',
      },
      {
        internalType: 'uint256[]',
        name: 'ids',
        type: 'uint256[]',
      },
      {
        internalType: 'uint256[]',
        name: 'amounts',
        type: 'uint256[]',
      },
      {
        internalType: 'bytes',
        name: 'data',
        type: 'bytes',
      },
    ],
    name: 'safeBatchTransferFrom',
    outputs: [],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'address',
        name: 'from',
        type: 'address',
      },
      {
        internalType: 'address',
        name: 'to',
        type: 'address',
      },
      {
        internalType: 'uint256',
        name: 'id',
        type: 'uint256',
      },
      {
        internalType: 'uint256',
        name: 'amount',
        type: 'uint256',
      },
      {
        internalType: 'bytes',
        name: 'data',
        type: 'bytes',
      },
    ],
    name: 'safeTransferFrom',
    outputs: [],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'address',
        name: 'operator',
        type: 'address',
      },
      {
        internalType: 'bool',
        name: 'approved',
        type: 'bool',
      },
    ],
    name: 'setApprovalForAll',
    outputs: [],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'bytes4',
        name: 'interfaceId',
        type: 'bytes4',
      },
    ],
    name: 'supportsInterface',
    outputs: [
      {
        internalType: 'bool',
        name: '',
        type: 'bool',
      },
    ],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [
      {
        internalType: 'uint256',
        name: '',
        type: 'uint256',
      },
    ],
    name: 'uri',
    outputs: [
      {
        internalType: 'string',
        name: '',
        type: 'string',
      },
    ],
    stateMutability: 'view',
    type: 'function',
  },
] as const;


export const abiERC20 = [
  {
    constant: true,
    inputs: [],
    name: 'name',
    outputs: [
      {
        name: '',
        type: 'string',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_spender',
        type: 'address',
      },
      {
        name: '_value',
        type: 'uint256',
      },
    ],
    name: 'approve',
    outputs: [
      {
        name: 'success',
        type: 'bool',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'totalSupply',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_from',
        type: 'address',
      },
      {
        name: '_to',
        type: 'address',
      },
      {
        name: '_value',
        type: 'uint256',
      },
    ],
    name: 'transferFrom',
    outputs: [
      {
        name: 'success',
        type: 'bool',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'decimals',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'version',
    outputs: [
      {
        name: '',
        type: 'string',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_owner',
        type: 'address',
      },
    ],
    name: 'balanceOf',
    outputs: [
      {
        name: 'balance',
        type: 'uint256',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'symbol',
    outputs: [
      {
        name: '',
        type: 'string',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_to',
        type: 'address',
      },
      {
        name: '_value',
        type: 'uint256',
      },
    ],
    name: 'transfer',
    outputs: [
      {
        name: 'success',
        type: 'bool',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_spender',
        type: 'address',
      },
      {
        name: '_value',
        type: 'uint256',
      },
      {
        name: '_extraData',
        type: 'bytes',
      },
    ],
    name: 'approveAndCall',
    outputs: [
      {
        name: 'success',
        type: 'bool',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_owner',
        type: 'address',
      },
      {
        name: '_spender',
        type: 'address',
      },
    ],
    name: 'allowance',
    outputs: [
      {
        name: 'remaining',
        type: 'uint256',
      },
    ],
    payable: false,
    type: 'function',
  },
  {
    inputs: [
      {
        name: '_initialAmount',
        type: 'uint256',
      },
      {
        name: '_tokenName',
        type: 'string',
      },
      {
        name: '_decimalUnits',
        type: 'uint8',
      },
      {
        name: '_tokenSymbol',
        type: 'string',
      },
    ],
    type: 'constructor',
  },
  {
    payable: false,
    type: 'fallback',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        name: '_from',
        type: 'address',
      },
      {
        indexed: true,
        name: '_to',
        type: 'address',
      },
      {
        indexed: false,
        name: '_value',
        type: 'uint256',
      },
    ],
    name: 'Transfer',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        name: '_owner',
        type: 'address',
      },
      {
        indexed: true,
        name: '_spender',
        type: 'address',
      },
      {
        indexed: false,
        name: '_value',
        type: 'uint256',
      },
    ],
    name: 'Approval',
    type: 'event',
  },
] as const;


export const abiERC721 = [
  {
    constant: true,
    inputs: [
      {
        name: 'interfaceID',
        type: 'bytes4',
      },
    ],
    name: 'supportsInterface',
    outputs: [
      {
        name: '',
        type: 'bool',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'name',
    outputs: [
      {
        name: '_name',
        type: 'string',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'getApproved',
    outputs: [
      {
        name: '',
        type: 'address',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_approved',
        type: 'address',
      },
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'approve',
    outputs: [],
    payable: true,
    stateMutability: 'payable',
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'totalSupply',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_from',
        type: 'address',
      },
      {
        name: '_to',
        type: 'address',
      },
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'transferFrom',
    outputs: [],
    payable: true,
    stateMutability: 'payable',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_owner',
        type: 'address',
      },
      {
        name: '_index',
        type: 'uint256',
      },
    ],
    name: 'tokenOfOwnerByIndex',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_from',
        type: 'address',
      },
      {
        name: '_to',
        type: 'address',
      },
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'safeTransferFrom',
    outputs: [],
    payable: true,
    stateMutability: 'payable',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_index',
        type: 'uint256',
      },
    ],
    name: 'tokenByIndex',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'ownerOf',
    outputs: [
      {
        name: '',
        type: 'address',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_owner',
        type: 'address',
      },
    ],
    name: 'balanceOf',
    outputs: [
      {
        name: '',
        type: 'uint256',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [],
    name: 'symbol',
    outputs: [
      {
        name: '_symbol',
        type: 'string',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_operator',
        type: 'address',
      },
      {
        name: '_approved',
        type: 'bool',
      },
    ],
    name: 'setApprovalForAll',
    outputs: [],
    payable: false,
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    constant: false,
    inputs: [
      {
        name: '_from',
        type: 'address',
      },
      {
        name: '_to',
        type: 'address',
      },
      {
        name: '_tokenId',
        type: 'uint256',
      },
      {
        name: 'data',
        type: 'bytes',
      },
    ],
    name: 'safeTransferFrom',
    outputs: [],
    payable: true,
    stateMutability: 'payable',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'tokenURI',
    outputs: [
      {
        name: '',
        type: 'string',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    constant: true,
    inputs: [
      {
        name: '_owner',
        type: 'address',
      },
      {
        name: '_operator',
        type: 'address',
      },
    ],
    name: 'isApprovedForAll',
    outputs: [
      {
        name: '',
        type: 'bool',
      },
    ],
    payable: false,
    stateMutability: 'view',
    type: 'function',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        name: '_from',
        type: 'address',
      },
      {
        indexed: true,
        name: '_to',
        type: 'address',
      },
      {
        indexed: true,
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'Transfer',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        name: '_owner',
        type: 'address',
      },
      {
        indexed: true,
        name: '_approved',
        type: 'address',
      },
      {
        indexed: true,
        name: '_tokenId',
        type: 'uint256',
      },
    ],
    name: 'Approval',
    type: 'event',
  },
  {
    anonymous: false,
    inputs: [
      {
        indexed: true,
        name: '_owner',
        type: 'address',
      },
      {
        indexed: true,
        name: '_operator',
        type: 'address',
      },
      {
        indexed: false,
        name: '_approved',
        type: 'bool',
      },
    ],
    name: 'ApprovalForAll',
    type: 'event',
  },
] as const;