[Draft]: Add Solidity code samples to migrate from ERC20/721 to LSP7/8

.gitpod.yml

@@ -0,0 +1,9 @@
+image: gitpod/workspace-full
+
+# Commands that will run on workspace start
+tasks:
+  - name: Setup, Install & Build
+    init: |
+      cd ./smart-contracts-hardhat
+      npm install
+      npm run build

.prettierignore

@@ -1 +0,0 @@
-smart-contract-hardhat

README.md

@@ -2,6 +2,14 @@
 
 Convenient code snippets to interact with [LSP](https://docs.lukso.tech/standards/standards-roadmap) standards on LUKSO. Code examples are taken from the [LUKSO Tech Docs](https://docs.lukso.tech/) and are working as standalone scripts.
 
+## Want to get started quickly?
+
+**Start prototyping quickly on a [Gitpod](https://gitpod.io/)!**
+
+_This will open the repository and setup everything for you automatically (install dependencies 📦, build contracts 🏗️, etc...)_
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/CJ42/lukso-playground/tree/migrate-erc-lsp)
+
 ## Contents
 
 - [`universal-profile`](./universal-profile): Universal Profile related scripts

smart-contracts-hardhat/contracts/LSP1/NewsSubscription.sol

@@ -1,4 +1,4 @@
-// SPDC-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Apache-2.0
 pragma solidity ^0.8.17;
 
 // interfaces

smart-contracts-hardhat/contracts/MigrateERCToLSP/ERC20ToLSP7.sol

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MIT
+// Compatible with OpenZeppelin Contracts <4.9.6
+pragma solidity ^0.8.19;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+contract EcoCoinAsERC20 is ERC20, ERC20Burnable, Ownable {
+    constructor(address initialOwner) ERC20("EcoCoin", "ECN") {
+        _transferOwnership(initialOwner);
+        _mint(msg.sender, 10000 * 10 ** decimals());
+    }
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+}
+
+// --------
+
+// modules
+import {
+    LSP7DigitalAsset
+} from "@lukso/lsp7-contracts/contracts/LSP7DigitalAsset.sol";
+import {
+    LSP7Burnable
+} from "@lukso/lsp7-contracts/contracts/extensions/LSP7Burnable.sol";
+
+// constants
+import {
+    _LSP4_TOKEN_TYPE_TOKEN
+} from "@lukso/lsp4-contracts/contracts/LSP4Constants.sol";
+
+contract EcoCoinAsLSP7 is LSP7DigitalAsset, LSP7Burnable {
+    constructor(
+        address initialOwner
+    )
+        LSP7DigitalAsset(
+            "EcoCoin",
+            "ECN",
+            initialOwner,
+            _LSP4_TOKEN_TYPE_TOKEN,
+            false
+        )
+    {
+        _mint(msg.sender, 10_000 * 10 ** decimals(), true, "0x");
+    }
+}

smart-contracts-hardhat/contracts/MigrateERCToLSP/ERC721ToLSP8.sol

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: MIT
+// Compatible with OpenZeppelin Contracts <4.9.6
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
+import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+contract TimeCapsulezAsERC721 is ERC721, ERC721Burnable, Ownable {
+    constructor(address initialOwner) ERC721("Time Capsulez", "TCZ") {
+        _transferOwnership(initialOwner);
+    }
+
+    function safeMint(address to, uint256 tokenId) public onlyOwner {
+        _safeMint(to, tokenId);
+    }
+}
+
+// modules
+import {
+    LSP8Mintable
+} from "@lukso/lsp8-contracts/contracts/presets/LSP8Mintable.sol";
+import {
+    LSP8Burnable
+} from "@lukso/lsp-smart-contracts/contracts/LSP8IdentifiableDigitalAsset/extensions/LSP8Burnable.sol";
+
+// constants
+import {
+    _LSP4_TOKEN_TYPE_COLLECTION
+} from "@lukso/lsp4-contracts/contracts/LSP4Constants.sol";
+import {
+    _LSP8_TOKENID_FORMAT_NUMBER
+} from "@lukso/lsp8-contracts/contracts/LSP8Constants.sol";
+
+contract TimeCapsulezAsLSP8 is LSP8Mintable, LSP8Burnable {
+    constructor(
+        address initialOwner
+    )
+        LSP8Mintable(
+            "Time Capsulez",
+            "TCZ",
+            initialOwner,
+            _LSP4_TOKEN_TYPE_COLLECTION, // number `2`
+            _LSP8_TOKENID_FORMAT_NUMBER // number `0`
+        )
+    {}
+}

smart-contracts-hardhat/contracts/MigrateERCToLSP/MyToken.sol

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: MIT
+// Compatible with OpenZeppelin Contracts ^4.9.3
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+// modules
+import {
+    LSP7DigitalAsset
+} from "@lukso/lsp7-contracts/contracts/LSP7DigitalAsset.sol";
+import {
+    LSP7Burnable
+} from "@lukso/lsp7-contracts/contracts/extensions/LSP7Burnable.sol";
+import {
+    LSP7Mintable
+} from "@lukso/lsp7-contracts/contracts/presets/LSP7Mintable.sol";
+
+// constants
+import {
+    _LSP4_TOKEN_TYPE_TOKEN
+} from "@lukso/lsp4-contracts/contracts/LSP4Constants.sol";
+
+contract EcoCoin is LSP7Burnable, LSP7Mintable {
+    constructor(
+        address initialOwner
+    )
+        LSP7Mintable(
+            "EcoCoin", // name
+            "ECN", // symbol
+            initialOwner, // contract owner
+            _LSP4_TOKEN_TYPE_TOKEN, // token type
+            false // is non divisible
+        )
+    {
+        _mint({
+            to: initialOwner,
+            amount: 10_000 * 10 ** decimals(), // 10_000_000_000_000_000_000_000
+            force: true, // allowing to send to EOA as well
+            data: bytes(unicode"Minting some tokens!!! 🔥🫡")
+        });
+    }
+}

smart-contracts-hardhat/hardhat.config.ts

@@ -7,7 +7,7 @@ LoadEnv();
 const config: HardhatUserConfig = {
   solidity: {
     // Default compiler version for all contracts
-    version: '0.8.19',
+    version: '0.8.20',
     settings: {
       optimizer: {
         enabled: true,