Skill

typo3-conformance

Use when assessing TYPO3 extension quality, conformance checking, standards compliance, modernization to v12/v13/v14, TER readiness, or best practices review. Also triggers on: extension audit, quality score, full assessment, fix all findings, conformance audit, Bootstrap 5 migration, CSP compliance, ViewHelper security, XLIFF hygiene, PHP 8.4/8.5 compat.

From typo3-conformance

Install

Run in your terminal

npx claudepluginhub netresearch/claude-code-marketplace --plugin typo3-conformance

Tool Access

This skill uses the workspace's default tool permissions.

Supporting Assets

View in Repository

assets/Build/composer-unused/composer-unused.php

assets/Build/php-cs-fixer/php-cs-fixer.php

assets/Build/phpstan/phpstan-baseline.neon

assets/Build/phpstan/phpstan.neon

assets/Build/rector/rector.php

assets/Build/typoscript-lint/TypoScriptLint.yml

checkpoints.yaml

references/backend-module-v13.md

references/backend-wizard-patterns.md

references/best-practices.md

references/coding-guidelines.md

references/composer-validation.md

references/crowdin-integration.md

references/development-environment.md

references/directory-structure.md

references/dual-version-compatibility.md

references/excellence-indicators.md

references/ext-emconf-validation.md

references/ext-files-validation.md

references/extension-architecture.md

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Stats

Stars5

Forks0

Last CommitApr 1, 2026

Actions

View Source View Plugin View on GitHub View README

TYPO3 Extension Conformance Checker

Evaluate TYPO3 extensions against TYPO3 coding standards, architecture patterns, and best practices.

When to Use

Assessing extension quality or TER readiness
Generating scored conformance reports
Planning modernization to v12/v13/v14

Delegation

Testing -> typo3-testing | Docs -> typo3-docs | OpenSSF -> enterprise-readiness

Workflow

Step 0: Context

Read ext_emconf.php + composer.json to determine TYPO3/PHP version, extension type, scope.

Steps 1-10: Checks

Metadata -- Extension key, TYPO3 version, type
Structure -- composer.json, ext_emconf.php, Classes/, Configuration/, Resources/
Coding -- strict_types, PSR-12, PHP 8.4 explicit nullable, PHP 8.5 float-to-int
Prohibited -- No $GLOBALS, no GeneralUtility::makeInstance() for services
Architecture -- Constructor DI, Services.yaml, PSR-14 events
Backend -- ES6 modules, Modal API, CSRF, CSP (v13+)
Testing -- PHPUnit, Playwright E2E, coverage >70%
Practices -- DDEV, runTests.sh, CI/CD, quality tools
TER -- Publish workflow, upload comment format
Audit -- PHPStan baseline, TCA searchFields/default_sortby, XLIFF completeness, cache has()+get() anti-pattern, Extbase query property names, multi-version adapters

Step 11: Verify

Re-run after fixes. Document score delta (e.g., "58 -> 82").

Quick Grep Recipes

# Missing strict_types
grep -rL 'strict_types' Classes/ --include='*.php'
# Prohibited $GLOBALS
grep -rn '\$GLOBALS' Classes/ --include='*.php'
# makeInstance for services
grep -rn 'GeneralUtility::makeInstance' Classes/ --include='*.php'
# PHP 8.4 implicit nullable (deprecated)
grep -rPn '\(\s*[A-Za-z\\]+\s+\$\w+\s*=\s*null' Classes/ --include='*.php' | grep -v '?'
# Cache has()+get() anti-pattern
grep -rn '->has(' Classes/ --include='*.php'
# ext_emconf must NOT have strict_types
grep -l 'strict_types' ext_emconf.php
# PHP 8.5 implicit float-to-int (deprecated)
grep -rn '(int)\s*\$' Classes/ --include='*.php'
# Bootstrap 4 data attributes in Fluid
grep -rn 'data-toggle\|data-dismiss\|data-ride' Resources/ --include='*.html'

Scoring

Base (0-100): Architecture(20) + Guidelines(20) + PHP(20) + Testing(20) + Practices(20). Excellence bonus up to 22. Critical issues block regardless.

Range	Level	Action
90+	Excellent	Production/TER ready
80-89	Good	Minor fixes
70-79	Acceptable	Fix before release
50-69	Needs Work	Significant effort
<50	Critical	Block deployment

References

references/extension-architecture.md -- Structure, required files
references/coding-guidelines.md -- PSR-12, naming, PHPStan
references/php-architecture.md -- DI, events, middleware
references/testing-standards.md -- PHPUnit/Playwright
references/composer-validation.md -- composer.json rules
references/ext-emconf-validation.md -- TER fields
references/version-requirements.md -- TYPO3/PHP compat
references/dual-version-compatibility.md -- v12+v13
references/multi-version-dependency-compatibility.md -- Adapter pattern
references/v13-deprecations.md -- Migration paths
references/backend-module-v13.md -- ES6, Modal, a11y
references/ter-publishing.md -- TER workflow
references/report-template.md -- Report format
references/excellence-indicators.md -- Bonus scoring
references/best-practices.md -- Organizational patterns

Asset templates in assets/Build/: PHPStan, PHP-CS-Fixer, Rector, ESLint, Stylelint, TypoScript lint.