add formatter

.editorconfig

@@ -0,0 +1,12 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  lint-and-format:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '20'
+    - run: npm ci
+    - name: Check linting
+      run: npm run lint
+    - name: Check formatting
+      run: npx prettier --check 'src/**/*.{js,ts,tsx}'
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '20'
+    - run: npm ci
+    - run: npm run compile
+    - run: npm test

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "semi": true,
+  "printWidth": 100
+}

README.md

@@ -84,6 +84,22 @@ MIT
 
 If you encounter any problems or have any suggestions, please open an issue on the [GitHub repository](https://github.com/collinc777/context-copy).
 
+## Development
+
+This project uses ESLint and Prettier for code linting and formatting. These checks are run in the CI pipeline for all pull requests.
+
+To manually run linting:
+
+```bash
+npm run lint
+```
+
+To manually run formatting:
+
+```bash
+npm run format
+```
+
 ---
 
 Happy coding, and enjoy using Copy for Context!