Supports interface uses view

src/contracts/mocks/ERC20Mock.sol

@@ -1,6 +1,7 @@
 pragma solidity ^0.8.0;
 
 import "@0xsequence/erc-1155/contracts/interfaces/IERC20.sol";
+import "@0xsequence/erc-1155/contracts/interfaces/IERC165.sol";
 
 /**
  * @title Standard ERC20 token
@@ -14,7 +15,7 @@
  * all accounts just by listening to said events. Note that this isn't required by the specification, and other
  * compliant implementations may not do it.
  */
-contract ERC20 is IERC20 {
+contract ERC20 is IERC20, IERC165 {
   mapping (address => uint256) private _balances;
 
   mapping (address => mapping (address => uint256)) private _allowed;
@@ -122,7 +123,7 @@
     * @param value The amount to be transferred.
     */
   function _transfer(address from, address to, uint256 value) internal {
     require(to != address(0));
 
     _balances[from] -= value;
     _balances[to] += value;
@@ -137,7 +138,7 @@
     * @param value The amount that will be created.
     */
   function _mint(address account, uint256 value) internal {
     require(account != address(0));
 
     _totalSupply += value;
     _balances[account] += value;
@@ -151,7 +152,7 @@
     * @param value The amount that will be burnt.
     */
   function _burn(address account, uint256 value) internal {
     require(account != address(0));
 
     _totalSupply -= value;
     _balances[account] -= value;
@@ -165,8 +166,8 @@
     * @param value The number of tokens that can be spent.
     */
   function _approve(address owner, address spender, uint256 value) internal {
     require(spender != address(0));
     require(owner != address(0));
 
     _allowed[owner][spender] = value;
     emit Approval(owner, spender, value);
@@ -185,10 +186,19 @@
     _approve(account, msg.sender, _allowed[account][msg.sender] - value);
   }
 
+  /**
+   * @dev Indicates whether a contract implements the ERC-20 functions.
+   * @param  interfaceID The ERC-165 interface ID that is queried for support.
+   * @return Whether ERC-165 or ERC-20 interfaces are supported.
+   */
+  function supportsInterface(bytes4 interfaceID) public override view returns (bool) {
+    return  interfaceID == type(IERC165).interfaceId || interfaceID == type(IERC20).interfaceId;
+  }
+
 }
 
+
 contract ERC20Mock is ERC20 {
-  constructor() public { }
 
   function mockMint(address _address, uint256 _amount) public {
     _mint(_address, _amount);

src/contracts/wrapper/ERC20Wrapper.sol

@@ -34,7 +34,7 @@
   |__________________________________*/
 
   // Register ETH as ID #1 and address 0x1
-  constructor() public {
+  constructor() {
     addressToID[ETH_ADDRESS] = ETH_ID;
     IDtoAddress[ETH_ID] = ETH_ADDRESS;
   }
@@ -143,7 +143,7 @@
 
     } else {
       require(_to != address(0), "ERC20Wrapper#withdraw: INVALID_RECIPIENT");
       (bool success, ) = _to.call{value: _value}("");
       require(success, "ERC20Wrapper#withdraw: TRANSFER_FAILED");
     }
 
@@ -260,7 +260,7 @@
         }
 
         // not sure what was returned: dont mark as success
         default { }
 
     }
 
@@ -274,10 +274,10 @@
    *      This function MUST NOT consume more than 5,000 gas.
    * @return Wheter ERC-165 or ERC1155TokenReceiver interfaces are supported.
    */
-  function supportsInterface(bytes4 interfaceID) public override pure returns (bool) {
+  function supportsInterface(bytes4 interfaceID) public override view returns (bool) {
     return  interfaceID == type(IERC165).interfaceId ||
       interfaceID == type(IERC1155).interfaceId || 
-      interfaceID == type(IERC1155TokenReceiver).interfaceId;        
+      interfaceID == type(IERC1155TokenReceiver).interfaceId;
   }
 
 }

src/contracts/wrapper/MetaERC20Wrapper.sol

@@ -35,7 +35,7 @@
   |__________________________________*/
 
   // Register ETH as ID #1 and address 0x1
-  constructor() public {
+  constructor() {
     addressToID[ETH_ADDRESS] = ETH_ID;
     IDtoAddress[ETH_ID] = ETH_ADDRESS;
   }
@@ -144,7 +144,7 @@
 
     } else {
       require(_to != address(0), "MetaERC20Wrapper#withdraw: INVALID_RECIPIENT");
       (bool success, ) = _to.call{value: _value}("");
       require(success, "MetaERC20Wrapper#withdraw: TRANSFER_FAILED");
     }
 
@@ -261,7 +261,7 @@
         }
 
         // not sure what was returned: dont mark as success
         default { }
 
     }
 
@@ -270,15 +270,15 @@
 
   /**
    * @notice Indicates whether a contract implements the `ERC1155TokenReceiver` functions and so can accept ERC1155 token types.
-   * @param  interfaceID The ERC-165 interface ID that is queried for support.s
+   * @param  interfaceID The ERC-165 interface ID that is queried for support.
    * @dev This function MUST return true if it implements the ERC1155TokenReceiver interface and ERC-165 interface.
    *      This function MUST NOT consume more than 5,000 gas.
-   * @return Wheter ERC-165 or ERC1155TokenReceiver interfaces are supported.
+   * @return Whether ERC-165 or ERC1155TokenReceiver interfaces are supported.
    */
-  function supportsInterface(bytes4 interfaceID) public override pure returns (bool) {
+  function supportsInterface(bytes4 interfaceID) public override view returns (bool) {
     return  interfaceID == type(IERC165).interfaceId ||
       interfaceID == type(IERC1155).interfaceId || 
-      interfaceID == type(IERC1155TokenReceiver).interfaceId;        
+      interfaceID == type(IERC1155TokenReceiver).interfaceId;
   }
 
 }

src/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@0xsequence/erc20-meta-token",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "General ERC20 to ERC1155 Token Wrapper Contract",
   "repository": "https://github.com/0xsequence/erc20-meta-token",
   "homepage": "https://sequence.build",
@@ -19,7 +19,7 @@
     "ethers": "^5.0.32"
   },
   "dependencies": {
-    "@0xsequence/erc-1155": "^4.0.1"
+    "@0xsequence/erc-1155": "^4.0.2"
   },
   "devDependencies": {}
 }

yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@0xsequence/erc-1155@^4.0.1":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@0xsequence/erc-1155/-/erc-1155-4.0.1.tgz#c991fe06b6ae385146e69cd9d1c4982b06487c10"
-  integrity sha512-KFLxBfiocOuHmPUkGYiWw5fLZ8uCDhXhcyzFFv8oe/KWXdxL37NTD7n6CmMSRiUxr4qaXuFV5u38vPFWFdOY0g==
+"@0xsequence/erc-1155@^4.0.2":
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/@0xsequence/erc-1155/-/erc-1155-4.0.2.tgz#619f1151133aa1f3627443e575bf26deb22c1055"
+  integrity sha512-76r4lMBu75AfkwIaApW2pjCY4JikuPa+y7RPdvG8fnInS3QRLwrUUviiG7BLc4oiJ7quQBBj/kM6e6Mw/ezJFQ==
   optionalDependencies:
     "@ethersproject/abi" "^5.7.0"
     "@ethersproject/providers" "^5.7.2"