feat: add ERC721 token standard

.editorconfig

@@ -12,5 +12,5 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-[*.sol]
+[*.{sol,toml}]
 indent_size = 4

.env.example

@@ -1,3 +1,2 @@
-BOB_PRIVATE_KEY="private key"
-INFURA_API_KEY="zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
-MNEMONIC="here is where your twelve words mnemonic should be put my friend"
+export ETH_FROM="YOUR_DEFAULT_SENDER_ACCOUNT"
+export ETH_RPC_URL="https://rinkeby.infura.io/v3/INFURA_API_KEY"

.github/workflows/integration.yml

@@ -0,0 +1,51 @@
+name: "Continuous Integration"
+
+on:
+  pull_request:
+    branches:
+      - "main"
+  push:
+    branches:
+      - "main"
+
+jobs:
+  integration:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: "Check out the repo"
+        uses: "actions/checkout@v3"
+        with:
+          submodules: "recursive"
+
+      - name: "Install Foundry"
+        uses: "onbjerg/foundry-toolchain@v1"
+        with:
+          version: "nightly"
+
+      - name: "Install Node.js"
+        uses: "actions/setup-node@v3"
+        with:
+          cache: "yarn"
+          node-version: "16"
+
+      - name: "Install the Node.Js dependencies"
+        run: "yarn install --immutable"
+
+      - name: "Lint the contracts"
+        run: "yarn lint"
+
+      - name: "Add lint summary"
+        run: |
+          echo "## Lint results" >> $GITHUB_STEP_SUMMARY
+          echo "✅ Passed" >> $GITHUB_STEP_SUMMARY
+
+      - name: "Show the Foundry config"
+        run: "forge config"
+
+      - name: "Run the tests"
+        run: "forge test"
+
+      - name: "Add test summary"
+        run: |
+          echo "## Test results" >> $GITHUB_STEP_SUMMARY
+          echo "✅ Passed" >> $GITHUB_STEP_SUMMARY

.gitignore

@@ -5,20 +5,17 @@
 !.yarn/plugins
 !.yarn/sdks
 !.yarn/versions
-**/artifacts
-**/build
 **/cache
-**/coverage
-**/dist
 **/node_modules
 **/out
 
 # files
 *.env
 *.log
-*.tsbuildinfo
-contracts/README.md
-coverage.json
+.DS_Store
+.pnp.*
 npm-debug.log*
+src/CHANGELOG.md
+src/README.md
 yarn-debug.log*
 yarn-error.log*

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "lib/forge-std"]
 	path = lib/forge-std
 	url = https://github.com/foundry-rs/forge-std
+[submodule "lib/prb-math"]
+	path = lib/prb-math
+	url = https://github.com/paulrberg/prb-math

.lintstagedrc

@@ -1,5 +1,5 @@
 {
-  "*.{js,json,md,sol,ts,yaml,yml}": [
-    "prettier --config ./.prettierrc.yaml --write"
+  "*.{md,sol,yaml,yml}": [
+    "prettier --config ./.prettierrc.yml --write"
   ]
 }

.prettierignore

@@ -1,20 +1,12 @@
 # directories
 .yarn/
-**/.coverage_artifacts
-**/.coverage_cache
-**/.coverage_contracts
-**/artifacts
-**/build
 **/cache
-**/coverage
-**/dist
+**/out
 **/node_modules
-**/src/types
 
 # files
 *.env
 *.log
-*.tsbuildinfo
 .pnp.*
 coverage.json
 npm-debug.log*

.prettierrc.yml

@@ -0,0 +1,12 @@
+arrowParens: "avoid"
+bracketSpacing: true
+endOfLine: "auto"
+printWidth: 120
+singleQuote: false
+tabWidth: 2
+trailingComma: "all"
+
+overrides:
+  - files: ["*.sol", "*.toml"]
+    options:
+      tabWidth: 4

.solhint.json

@@ -10,13 +10,16 @@
     "func-name-mixedcase": "off",
     "func-visibility": ["error", { "ignoreConstructors": true }],
     "max-line-length": ["error", 120],
+    "no-empty-blocks": "off",
+    "no-inline-assembly": "off",
     "not-rely-on-time": "off",
     "prettier/prettier": [
       "error",
       {
         "endOfLine": "auto"
       }
     ],
-    "reason-string": ["warn", { "maxLength": 64 }]
+    "reason-string": ["warn", { "maxLength": 64 }],
+    "var-name-mixedcase": "off"
   }
 }

.yarnrc.yml

@@ -1,7 +1,7 @@
-nodeLinker: node-modules
+nodeLinker: "node-modules"
 
 plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
+  - path: ".yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs"
     spec: "@yarnpkg/plugin-interactive-tools"
 
-yarnPath: .yarn/releases/yarn-3.2.0.cjs
+yarnPath: ".yarn/releases/yarn-3.2.0.cjs"