mysterybox1

contracts/external/ERC721/ERC721.sol

@@ -4,6 +4,7 @@
 pragma solidity 0.6.9;
 
 import {IERC721} from "../../intf/IERC721.sol";
+import {IERC165} from "../../intf/IERC165.sol";
 import {IERC721Receiver} from "../../intf/IERC721Receiver.sol";
 import {IERC721Metadata} from "../../intf/IERC721Metadata.sol";
 import {ERC165} from "../utils/ERC165.sol";
@@ -21,10 +22,12 @@ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
     using Strings for uint256;
 
     // Token name
-    string private _name;
+    string internal _name;
 
     // Token symbol
-    string private _symbol;
+    string internal _symbol;
+
+    string internal _baseURI = "";
 
     // Mapping from token ID to owner address
     mapping (uint256 => address) private _owners;
@@ -84,20 +87,12 @@ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
     function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
         require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
 
-        string memory baseURI = _baseURI();
+        string memory baseURI = _baseURI;
         return bytes(baseURI).length > 0
             ? string(abi.encodePacked(baseURI, tokenId.toString()))
             : '';
     }
 
-    /**
-     * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden
-     * in child contracts.
-     */
-    function _baseURI() internal view virtual returns (string memory) {
-        return "";
-    }
-
     /**
      * @dev See {IERC721-approve}.
      */

contracts/external/ERC721/InitializableERC721.sol

@@ -9,7 +9,7 @@ pragma solidity 0.6.9;
 
 import {ERC721} from "./ERC721.sol";
 
-contract InitializableERC1155 is ERC721 {
+contract InitializableERC721 is ERC721 {
     function init(
         address creator,
         string memory name,