# Dependency Update Testing Results 2026

**Last Updated:** 2026-03-02

Comprehensive testing results for Node.js 22, PhpSpreadsheet 5.x, and Python pandas 3.x installation and migration.

## Executive Summary

| Component | Status | Version Installed | Tests Passed |
|-----------|--------|------------------|--------------|
| **Node.js** | ✅ Complete | 22.22.0 | 4/4 |
| **npm Packages** | ✅ Complete | See below | All |
| **PhpSpreadsheet** | ✅ Complete | 5.5.0 | 6/6 |
| **Python pandas** | ⚠️ Requires venv | 3.x (requirements.txt updated) | N/A |

## Node.js 22 Installation & Testing

### Installation

- **Method:** Homebrew (`brew install node@22`)
- **Version Installed:** 22.22.0
- **npm Version:** 10.9.4
- **Path:** `/opt/homebrew/opt/node@22/bin/node`

### Compatibility Tests

All Node.js 22 compatibility tests passed:

1. ✅ **ESLint** - JavaScript linting works correctly
2. ✅ **Prettier** - Code formatting check works correctly
3. ✅ **CSS Build** - PostCSS compilation works correctly
4. ✅ **Tailwind CSS** - Tailwind CSS v4 import works correctly

### Build Tools Testing

- ✅ **ESLint:** Runs successfully (minor warnings only, no errors)
- ✅ **Prettier:** Format check passes
- ✅ **CSS Minification:** Works correctly (40.2% size reduction)
- ✅ **npm install:** All packages installed successfully

### Updated npm Packages Verified

- `lint-staged`: 16.3.1 ✅
- `postcss-cli`: 11.0.1 ✅
- `globals`: 17.4.0 ✅
- `@fullhuman/postcss-purgecss`: 8.0.0 ✅
- `markdown-link-check`: 3.14.2 ✅
- `cssnano`: 7.1.2 ✅
- `sharp`: 0.34.5 ✅
- `postcss`: 8.5.6 ✅

## PhpSpreadsheet 5.x Installation & Testing

### Installation

- **Root composer.json:** Updated to `^5.5`
- **v2/composer.json:** Updated to `^5.5`
- **Version Installed:** 5.5.0
- **Installation Method:** `composer update phpoffice/phpspreadsheet`

### Verification Script Results

Created and ran `v2/scripts/dev-helpers/test-phpspreadsheet-5.php`:

```
Test 1: Creating new Spreadsheet... ✓ PASSED
Test 2: Checking IOFactory class... ✓ PASSED
Test 3: Checking Writer\Xlsx class... ✓ PASSED
Test 4: Testing basic spreadsheet operations... ✓ PASSED
Test 5: Testing IOFactory::load() method exists... ✓ PASSED
Test 6: Checking PhpSpreadsheet version... ✓ PASSED (Version: 5.5.0)

Results: 6/6 tests passed
```

### Breaking Changes Analysis

**Searched codebase for deprecated patterns:**
- ✅ No usage of old IOFactory format names (`'CSV'`, `'Excel2007'`, etc.)
- ✅ No usage of deprecated methods (`duplicateStyleArray()`, `DataType::dataTypeForValue()`, etc.)
- ✅ Codebase uses `IOFactory::load()` which auto-detects format (compatible with 5.x)

**Files Using IOFactory::load():**
- `v2/systems/excel-template-generator/scripts/template-validator.php` (line 686)
- `v2/systems/excel-template-generator/scripts/test-template-quality.php` (lines 228, 273)
- `v2/systems/excel-template-generator/scripts/template-research-analyzer.php` (line 93)
- `v2/systems/excel-template-generator/scripts/analyze-template-quality.php` (line 371)
- `v2/systems/excel-template-generator/scripts/analyze-charts.php` (line 203)
- `v2/systems/excel-template-generator/scripts/test-template-compatibility.php` (multiple lines)
- `v2/systems/excel-template-generator/scripts/test-template-generator.php` (line 129)
- `v2/systems/excel-template-generator/scripts/validate-formulas.php` (line 203)

**Result:** All files use `IOFactory::load()` which is compatible with PhpSpreadsheet 5.x. No code changes required.

### Excel Generation Testing

#### Template Generation

- **Command:** `php template-cli.php generate simple-example.json output.xlsx`
- **Result:** ✅ Success
- **File Generated:** 9.76 KB valid XLSX file
- **File Type Verified:** Microsoft Excel 2007+

#### Template Validator

- **Command:** `php template-validator.php simple-example.json output.xlsx`
- **Result:** ✅ Success
- **Validation:** 0 errors, 2 warnings (preset usage warnings, not PhpSpreadsheet-related)
- **IOFactory::load():** Works correctly with PhpSpreadsheet 5.x

#### API Endpoints

- **Health Check:** `REQUEST_METHOD=GET php v2/api/generate_excel.php`
- **Result:** ✅ Success
- **Response:**
  ```json
  {
    "phpspreadsheet_available": true,
    "phpspreadsheet_test": true,
    "phpspreadsheet_error": ""
  }
  ```

#### Batch Generation

- **Command:** `php generate-all-templates.php --template=simple-example --verbose`
- **Result:** ✅ Success
- **Output:** Template generated successfully (9.76 KB, 0.03s)

### Code Fixes Applied

1. **template-validator.php:** Fixed `validateSchema()` function call (added missing `$schema` parameter)
2. **template-validator.php:** Fixed undefined `$validationResults` variable

## Python pandas 3.x Status

### Requirements File Updated

- **requirements.txt:** Updated to `pandas>=3.0.0`
- **jsonschema:** Updated to `>=4.26.0`
- **pytest:** Updated to `>=9.0.0`

### Installation Status

⚠️ **Note:** Python packages require virtual environment installation due to PEP 668 restrictions on macOS.

**Installation Command (when ready):**
```bash
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt --upgrade
```

### Testing Status

- ⏳ **Pending:** Requires virtual environment setup
- **Scripts to Test (when pandas 3.x installed):**
  - `v2/systems/excel-template-generator/scripts/enhance-template.py`
  - `v2/systems/excel-template-generator/scripts/analyze-keyword-reports.py`
  - `docs/strategy-2026/scripts/extract_metrics.py`

## Pre-Deployment Validation

### Dependency Version Check

- ✅ **Script:** `php v2/scripts/dev-helpers/check-dependency-versions.php`
- ✅ **Result:** All versions verified correctly

### Linting & Formatting

- ✅ **ESLint:** Runs successfully (minor warnings only)
- ✅ **Prettier:** Format check passes

## Known Issues

### Minor Issues (Non-Blocking)

1. **template-validator.php:** Fixed undefined variable warning
2. **E_STRICT deprecation:** PHP 8.4+ deprecation warning in template-cli.php (non-critical)
3. **Python pandas:** Requires virtual environment setup (documented)

### No Critical Issues

- ✅ No PhpSpreadsheet 5.x compatibility issues
- ✅ No Node.js 22 compatibility issues
- ✅ All core functionality working correctly

## Rollback Procedures

### Node.js 22 Rollback

If Node.js 22 causes issues:

```bash
# Switch back to Node 20 (if installed)
brew install node@20
export PATH="/opt/homebrew/opt/node@20/bin:$PATH"

# Or use nvm (if available)
nvm install 20
nvm use 20
```

### PhpSpreadsheet 5.x Rollback

If PhpSpreadsheet 5.x causes issues:

```bash
# Root composer.json
cd /Users/hadyelhady/Documents/GitHub/landingpage
php composer.phar require phpoffice/phpspreadsheet:^1.29

# v2/composer.json
cd v2
php ../composer.phar require phpoffice/phpspreadsheet:^1.20
```

### Python pandas 3.x Rollback

If pandas 3.x causes issues:

```bash
# In virtual environment
pip install "pandas>=2.0.0,<3.0.0"
```

## Next Steps

1. ✅ **Node.js 22:** Installation and testing complete
2. ✅ **PhpSpreadsheet 5.x:** Installation and testing complete
3. ⏳ **Python pandas 3.x:** Requires virtual environment setup (deferred)
4. ⏳ **Production Deployment:** Monitor for regressions after deployment
5. ⏳ **Follow-up Testing:** Schedule comprehensive testing in 1-2 weeks

## Test Artifacts

- **Generated Template:** `/tmp/test-template-output.xlsx` (9.76 KB)
- **Verification Script:** `v2/scripts/dev-helpers/test-phpspreadsheet-5.php`
- **Compatibility Test:** `v2/scripts/dev-helpers/test-node-22-compatibility.js`

## Conclusion

✅ **Node.js 22 and PhpSpreadsheet 5.x installations are complete and fully tested. All core functionality works correctly. No breaking changes found in codebase. Ready for production deployment.**

⚠️ **Python pandas 3.x update is deferred pending virtual environment setup. Requirements.txt has been updated and can be installed when ready.**