Update ERC20 Token with Decimals & Permit support (#220)

* Update ERC20 Token with Decimals & Permit support * Fixing decimals on token amounts * Fix lint * Change to float number * lint * Handle 0 decimal case with int value on transfer * lint
MetaMask · Mar 17, 2023 · 9947689 · 9947689
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commit 9947689
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diff --git a/contracts/ERC20.sol b/contracts/ERC20.sol
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.9;
+
+import "@openzeppelin/[email protected]/token/ERC20/ERC20.sol";
+import "@openzeppelin/[email protected]/access/Ownable.sol";
+import "@openzeppelin/[email protected]/token/ERC20/extensions/draft-ERC20Permit.sol";
+
+contract MyToken is ERC20, Ownable, ERC20Permit {
+
+    constructor(uint256 initialAmount, string memory tokenName, uint8 decimalUnits, string memory tokenSymbol) ERC20(tokenName, tokenSymbol, decimalUnits) ERC20Permit(tokenName) {
+        _mint(msg.sender, initialAmount * 10 ** decimals);
+    }    
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+}