Update sol version

.solhint.json

@@ -17,7 +17,7 @@
     "no-unused-vars": "off",
     "no-inline-assembly": "off",
     "visibility-modifier-order": "off",
-    "compiler-version": ["error", "0.7.4"],
+    "compiler-version": ["error", "^0.8.0"],
     "func-visibility": ["warn", {"ignoreConstructors":true}],
     "reason-string": ["warn", {"maxLength": 96}]
   }

README.md

@@ -14,7 +14,7 @@ The ERC-1155 token standard contains multiple classes of tokens referenced by ID
 ### Usage
 
 ```solidity
-pragma solidity ^0.7.4;
+pragma solidity ^0.8.0;
 
 import '@0xsequence/erc-1155/contracts/tokens/ERC1155/ERC1155.sol';
 

SPECIFICATIONS.md

@@ -457,10 +457,10 @@ Towards the end of a transaction, the fee to be paid is calculated as follow:
 
 ```solidity
 // Amount of gas consumed so far
-gasUsed = _startGas.sub(gasleft()).add(_g.baseGas);
+gasUsed = _startGas - gasleft() + _g.baseGas;
 
 // Reimburse up to gasLimit (instead of throwing)
-fee = gasUsed > _g.gasLimit ? _g.gasLimit.mul(_g.gasPrice) : gasUsed.mul(_g.gasPrice);
+fee = gasUsed > _g.gasLimit ? (_g.gasLimit * _g.gasPrice) : (gasUsed * _g.gasPrice);
 ```
 
 The `baseGas` value is there to account for gas that was not accounted for by the gas counter, such as the CALLDATA, the expected cost of reimbursing the gas, a supplementary fee required by operator, etc. 

hardhat.config.ts

@@ -8,7 +8,7 @@ import 'solidity-coverage'
 
 const config: HardhatUserConfig = {
   solidity: {
-    version: '0.7.4',
+    version: '0.8.18',
     settings: {
       optimizer: {
         enabled: true,

src/README.md

@@ -13,7 +13,7 @@ Sequence ERC-1155 contracts. For more information see, [github.com/0xsequence/er
 ### Usage from Solidity
 
 ```solidity
-pragma solidity ^0.7.4;
+pragma solidity ^0.8.0;
 
 import '@0xsequence/erc-1155/contracts/tokens/ERC1155/ERC1155.sol';
 

src/adapter/factories/mocks/ERC1155OperatorMock__factory.d.ts

@@ -13,7 +13,7 @@ export declare class ERC1155OperatorMock__factory extends ContractFactory {
     }): TransactionRequest;
     attach(address: string): ERC1155OperatorMock;
     connect(signer: Signer): ERC1155OperatorMock__factory;
-    static readonly bytecode = "0x608060405234801561001057600080fd5b50610d18806100206000396000f3fe608060405234801561001057600080fd5b50600436106100675760003560e01c8063e7e4f05211610050578063e7e4f05214610333578063eb46c45b14610519578063f06978b7146105f957610067565b80637ee7f69b1461006c57806387fd22fc1461024a575b600080fd5b610248600480360360c081101561008257600080fd5b73ffffffffffffffffffffffffffffffffffffffff823581169260208101358216926040820135909216918101906080810160608201356401000000008111156100cb57600080fd5b8201836020820111156100dd57600080fd5b803590602001918460208302840111640100000000831117156100ff57600080fd5b919080806020026020016040519081016040528093929190818152602001838360200280828437600092019190915250929594936020810193503591505064010000000081111561014f57600080fd5b82018360208201111561016157600080fd5b8035906020019184602083028401116401000000008311171561018357600080fd5b91908080602002602001604051908101604052809392919081815260200183836020028082843760009201919091525092959493602081019350359150506401000000008111156101d357600080fd5b8201836020820111156101e557600080fd5b8035906020019184600183028401116401000000008311171561020757600080fd5b91908080601f0160208091040260200160405190810160405280939291908181526020018383808284376000920191909152509295506106dd945050505050565b005b610248600480360360e081101561026057600080fd5b73ffffffffffffffffffffffffffffffffffffffff8235811692602081013582169260408201359092169160608201359160808101359160a08201351515919081019060e0810160c08201356401000000008111156102be57600080fd5b8201836020820111156102d057600080fd5b803590602001918460018302840111640100000000831117156102f257600080fd5b91908080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525092955061087a945050505050565b610248600480360360e081101561034957600080fd5b73ffffffffffffffffffffffffffffffffffffffff8235811692602081013582169260408201359092169181019060808101606082013564010000000081111561039257600080fd5b8201836020820111156103a457600080fd5b803590602001918460208302840111640100000000831117156103c657600080fd5b919080806020026020016040519081016040528093929190818152602001838360200280828437600092019190915250929594936020810193503591505064010000000081111561041657600080fd5b82018360208201111561042857600080fd5b8035906020019184602083028401116401000000008311171561044a57600080fd5b9190808060200260200160405190810160405280939291908181526020018383602002808284376000920191909152509295843515159590949093506040810192506020013590506401000000008111156104a457600080fd5b8201836020820111156104b657600080fd5b803590602001918460018302840111640100000000831117156104d857600080fd5b91908080601f0160208091040260200160405190810160405280939291908181526020018383808284376000920191909152509295506109a6945050505050565b610248600480360360c081101561052f57600080fd5b73ffffffffffffffffffffffffffffffffffffffff8235811692602081013582169260408201359092169160608201359160808101359181019060c0810160a082013564010000000081111561058457600080fd5b82018360208201111561059657600080fd5b803590602001918460018302840111640100000000831117156105b857600080fd5b91908080601f016020809104026020016040519081016040528093929190818152602001838380828437600092019190915250929550610b2d945050505050565b610248600480360360c081101561060f57600080fd5b73ffffffffffffffffffffffffffffffffffffffff823581169260208101358216926040820135909216916060820135151591608081013515159181019060c0810160a082013564010000000081111561066857600080fd5b82018360208201111561067a57600080fd5b8035906020019184600183028401116401000000008311171561069c57600080fd5b91908080601f016020809104026020016040519081016040528093929190818152602001838380828437600092019190915250929550610c2e945050505050565b8573ffffffffffffffffffffffffffffffffffffffff16632eb2c2d686868686866040518663ffffffff1660e01b8152600401808673ffffffffffffffffffffffffffffffffffffffff1681526020018573ffffffffffffffffffffffffffffffffffffffff168152602001806020018060200180602001848103845287818151815260200191508051906020019060200280838360005b8381101561078d578181015183820152602001610775565b50505050905001848103835286818151815260200191508051906020019060200280838360005b838110156107cc5781810151838201526020016107b4565b50505050905001848103825285818151815260200191508051906020019080838360005b838110156108085781810151838201526020016107f0565b50505050905090810190601f1680156108355780820380516001836020036101000a031916815260200191505b5098505050505050505050600060405180830381600087803b15801561085a57600080fd5b505af115801561086e573d6000803e3d6000fd5b50505050505050505050565b8673ffffffffffffffffffffffffffffffffffffffff1663ce0b514b8787878787876040518763ffffffff1660e01b8152600401808773ffffffffffffffffffffffffffffffffffffffff1681526020018673ffffffffffffffffffffffffffffffffffffffff168152602001858152602001848152602001831515815260200180602001828103825283818151815260200191508051906020019080838360005b8381101561093457818101518382015260200161091c565b50505050905090810190601f1680156109615780820380516001836020036101000a031916815260200191505b50975050505050505050600060405180830381600087803b15801561098557600080fd5b505af1158015610999573d6000803e3d6000fd5b50505050505050505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+    static readonly bytecode = "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     static readonly abi: {
         inputs: {
             internalType: string;