feat: add zero-config auto mode to GitHub Action

.changeset/zero-config-auto-mode.md

@@ -0,0 +1,8 @@
+---
+"@node-minify/action": minor
+"@node-minify/utils": minor
+---
+
+feat: add zero-config auto mode for GitHub Action with smart file discovery
+
+Adds `auto: true` mode that automatically discovers and minifies files without explicit input/output configuration. Includes smart file type detection, default glob patterns for common source directories, and comprehensive ignore patterns. Also adds ignore patterns support to the wildcards utility function.

.github/workflows/test-action.yml

@@ -101,6 +101,11 @@ jobs:
           input: "test-action/input.js"
           output: "test-action/output.min.js"
           compressor: "terser"
+          auto: 'false'
+          patterns: ''
+          output-dir: 'dist'
+          ignore: ''
+          dry-run: 'false'
 
       - name: Verify terser outputs
         env:
@@ -137,6 +142,11 @@ jobs:
           output: "test-action/output.esbuild.js"
           compressor: "esbuild"
           type: "js"
+          auto: 'false'
+          patterns: ''
+          output-dir: 'dist'
+          ignore: ''
+          dry-run: 'false'
 
       - name: Compare results
         env:
@@ -217,6 +227,11 @@ jobs:
           output: "test-action/output.min.css"
           compressor: "lightningcss"
           type: "css"
+          auto: 'false'
+          patterns: ''
+          output-dir: 'dist'
+          ignore: ''
+          dry-run: 'false'
 
       - name: Verify CSS output
         run: |
@@ -231,10 +246,161 @@ jobs:
 
           cat test-action/output.min.css
 
+  test-zero-config:
+    name: Test Zero Config (Auto Mode)
+    runs-on: ubuntu-latest
+    needs: build-action
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download built action
+        uses: actions/download-artifact@v4
+        with:
+          name: action-dist
+          path: packages/action/dist/
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Install compressors
+        run: |
+          mkdir -p /tmp/compressors && cd /tmp/compressors
+          npm init -y
+          npm install @node-minify/terser @node-minify/lightningcss
+          mkdir -p $GITHUB_WORKSPACE/node_modules
+          cp -r /tmp/compressors/node_modules/* $GITHUB_WORKSPACE/node_modules/
+
+      - name: Create test files
+        run: |
+          mkdir -p src
+          cat > src/app.js << 'EOF'
+          function hello() { console.log("hello world"); }
+          EOF
+
+          cat > src/utils.js << 'EOF'
+          export const add = (a, b) => a + b;
+          EOF
+
+          cat > src/styles.css << 'EOF'
+          body { margin: 0; padding: 0; }
+          EOF
+
+      - name: Run auto mode
+        uses: ./
+        with:
+          auto: "true"
+          output-dir: "dist"
+
+      - name: Verify outputs
+        run: |
+          test -f dist/src/app.js || (echo "dist/src/app.js not found" && exit 1)
+          test -f dist/src/utils.js || (echo "dist/src/utils.js not found" && exit 1)
+          test -f dist/src/styles.css || (echo "dist/src/styles.css not found" && exit 1)
+          echo "All output files created successfully"
+
+  test-zero-config-dry-run:
+    name: Test Zero Config Dry Run
+    runs-on: ubuntu-latest
+    needs: build-action
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download built action
+        uses: actions/download-artifact@v4
+        with:
+          name: action-dist
+          path: packages/action/dist/
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Install compressor
+        run: |
+          mkdir -p /tmp/compressors && cd /tmp/compressors
+          npm init -y
+          npm install @node-minify/terser
+          mkdir -p $GITHUB_WORKSPACE/node_modules
+          cp -r /tmp/compressors/node_modules/* $GITHUB_WORKSPACE/node_modules/
+
+      - name: Create test file
+        run: |
+          mkdir -p src
+          cat > src/app.js << 'EOF'
+          function test() { return 42; }
+          EOF
+
+      - name: Run dry-run mode
+        uses: ./
+        with:
+          auto: "true"
+          dry-run: "true"
+          output-dir: "dist"
+
+      - name: Verify no output created
+        run: |
+          test ! -d dist || (echo "dist/ should not exist in dry-run" && exit 1)
+          echo "Dry-run passed - no output created"
+
+  test-zero-config-custom-patterns:
+    name: Test Zero Config Custom Patterns
+    runs-on: ubuntu-latest
+    needs: build-action
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download built action
+        uses: actions/download-artifact@v4
+        with:
+          name: action-dist
+          path: packages/action/dist/
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Install compressor
+        run: |
+          mkdir -p /tmp/compressors && cd /tmp/compressors
+          npm init -y
+          npm install @node-minify/terser
+          mkdir -p $GITHUB_WORKSPACE/node_modules
+          cp -r /tmp/compressors/node_modules/* $GITHUB_WORKSPACE/node_modules/
+
+      - name: Create files in custom directory
+        run: |
+          mkdir -p custom/path
+          cat > custom/path/main.js << 'EOF'
+          console.log("custom location");
+          EOF
+
+      - name: Run with custom patterns
+        uses: ./
+        with:
+          auto: "true"
+          patterns: "custom/**/*.js"
+          output-dir: "dist"
+
+      - name: Verify custom output
+        run: |
+          test -f dist/custom/path/main.js || (echo "dist/custom/path/main.js not found" && exit 1)
+          echo "Custom patterns worked correctly"
+
   test-summary:
     name: Summary
     runs-on: ubuntu-latest
-    needs: [test-js-minification, test-css-minification]
+    needs:
+      [
+        test-js-minification,
+        test-css-minification,
+        test-zero-config,
+        test-zero-config-dry-run,
+        test-zero-config-custom-patterns,
+      ]
     steps:
       - name: All tests passed
         run: echo "All node-minify action tests passed!"

.gitignore

@@ -16,3 +16,5 @@ examples/public/**/*-dist
 examples/public/**/*.min.html
 packages/utils/__tests__/temp_perf/
 *.tmp
+.sisyphus/
+.claude/

action.yml

@@ -8,10 +8,28 @@ branding:
 inputs:
   input:
     description: "Files to minify (glob pattern or path)"
-    required: true
+    required: false
   output:
     description: "Output file path"
-    required: true
+    required: false
+  auto:
+    description: "Enable zero-config auto mode"
+    required: false
+    default: "false"
+  patterns:
+    description: "Custom glob patterns for auto mode (comma-separated)"
+    required: false
+  output-dir:
+    description: "Output directory for auto mode"
+    required: false
+    default: "dist"
+  ignore:
+    description: "Additional ignore patterns for auto mode (comma-separated)"
+    required: false
+  dry-run:
+    description: "Preview mode - show what would be processed without minifying"
+    required: false
+    default: "false"
   compressor:
     description: |
       Compressor to use.

docs/src/content/docs/github-action.md

@@ -15,6 +15,140 @@ Minify JavaScript, CSS, and HTML files directly in your GitHub workflows with de
 - 🎯 **Thresholds** - Fail builds on size regressions
 - 🏁 **Benchmark** - Compare compressor performance
 
+## Zero-Config Mode
+
+Enable automatic file discovery and compressor selection with `auto: true`. The action scans standard directories (`src/`, `app/`, `lib/`, `styles/`), detects file types, and applies appropriate compressors automatically.
+
+### How It Works
+
+1. **File Discovery**: Scans project for JS, CSS, HTML, JSON, and SVG files
+2. **Type Detection**: Determines file type from extension
+3. **Compressor Selection**: Chooses optimal compressor per file type
+4. **Parallel Processing**: Minifies files concurrently with concurrency limit
+5. **Grouped Results**: Summary organized by file type
+
+### Default Behavior
+
+**Included Directories**:
+- `src/**/*.{js,mjs,cjs,jsx,css,html,htm,json,svg}`
+- `app/**/*.{js,mjs,cjs,jsx,css,html,htm,json,svg}`
+- `lib/**/*.{js,mjs,cjs,jsx,css,html,htm,json,svg}`
+- `styles/**/*.{css}`
+- Root-level `*.{js,css,html,json,svg}`
+
+**Excluded By Default**:
+- `**/node_modules/**`
+- `**/dist/**`, `**/build/**`, `**/.next/**`
+- `**/*.min.{js,css}` (already minified)
+- `**/__tests__/**` (test files)
+- `**/.*` (hidden files)
+- `**/*.d.ts` (TypeScript declarations)
+
+**Note**: TypeScript files (`.ts`, `.tsx`) are excluded. Minifiers operate on compiled JavaScript, not TypeScript source. Compile first, then minify.
+
+### Required Compressor Packages
+
+| File Type | Default Compressor | Required Package |
+|-----------|-------------------|------------------|
+| JavaScript (`.js`, `.mjs`, `.cjs`, `.jsx`) | terser | `@node-minify/terser` |
+| CSS (`.css`) | lightningcss | `@node-minify/lightningcss` |
+| HTML (`.html`, `.htm`) | html-minifier | `@node-minify/html-minifier` |
+| JSON (`.json`) | jsonminify | `@node-minify/jsonminify` |
+| SVG (`.svg`) | svgo | `@node-minify/svgo` |
+
+**Install only the compressors you need** based on your project's file types.
+
+### Basic Usage
+
+```yaml
+- name: Setup Node.js
+  uses: actions/setup-node@v4
+  with:
+    node-version: '20'
+
+# Install compressors for your file types
+- name: Install compressors
+  run: |
+    npm install @node-minify/terser @node-minify/lightningcss
+
+- name: Minify all files
+  uses: srod/node-minify@v1
+  with:
+    auto: 'true'
+```
+
+Output files preserve directory structure in `dist/`:
+- `src/app.js` → `dist/src/app.js`
+- `src/styles.css` → `dist/src/styles.css`
+
+### Custom Patterns
+
+Override default patterns to target specific files:
+
+```yaml
+- name: Minify custom locations
+  uses: srod/node-minify@v1
+  with:
+    auto: 'true'
+    patterns: 'public/**/*.js,assets/**/*.css'
+    output-dir: 'build'
+```
+
+### Custom Ignore Patterns
+
+Add additional ignore patterns (merges with defaults):
+
+```yaml
+- name: Minify with custom ignores
+  uses: srod/node-minify@v1
+  with:
+    auto: 'true'
+    ignore: '**/*.config.js,**/vendor/**'
+```
+
+### Dry-Run Mode
+
+Preview which files would be processed without minifying:
+
+```yaml
+- name: Preview auto mode
+  uses: srod/node-minify@v1
+  with:
+    auto: 'true'
+    dry-run: 'true'
+```
+
+Check the job summary or logs to see discovered files.
+
+### Inputs
+
+| Input | Description | Required | Default |
+|-------|-------------|----------|---------|
+| `auto` | Enable zero-config mode | No | `false` |
+| `patterns` | Custom glob patterns (comma-separated) | No | Standard directories |
+| `output-dir` | Output directory | No | `dist` |
+| `ignore` | Additional ignore patterns (comma-separated) | No | - |
+| `dry-run` | Preview mode - discover files without processing | No | `false` |
+
+### Example: Mixed Project
+
+For a project with JavaScript, CSS, and HTML:
+
+```yaml
+- name: Install all compressors
+  run: |
+    npm install \
+      @node-minify/terser \
+      @node-minify/lightningcss \
+      @node-minify/html-minifier
+
+- name: Minify all assets
+  uses: srod/node-minify@v1
+  with:
+    auto: 'true'
+    output-dir: 'public/dist'
+```
+
 ## Quick Start
 
 ```yaml