wp-phpstan

WP PHPStan When to use Use this skill when working on PHPStan in a WordPress codebase, for example: setting up or updating phpstan.neon / phpstan.neon.dist generating or updating phpstan-baseline.neon fixing PHPStan errors via WordPress-friendly PHPDoc (REST requests, hooks, query results) handling third-party plugin/theme classes safely (stubs/autoload/targeted ignores) Inputs required wp-project-triage output (run first if you haven't) Whether adding/updating Composer dev dependencies is allowed (stubs). Whether changing the baseline is allowed for this task. Procedure 0) Discover PHPStan entrypoints (deterministic) Inspect PHPStan setup (config, baseline, scripts): node skills/wp-phpstan/scripts/phpstan_inspect.mjs Prefer the repo’s existing composer script (e.g. composer run phpstan ) when present. 1) Ensure WordPress core stubs are loaded szepeviktor/phpstan-wordpress or php-stubs/wordpress-stubs are effectively required for most WordPress plugin/theme repos. Without it, expect a high volume of errors about unknown WordPress core functions. Confirm the package is installed (see composer.dependencies in the inspect report). Ensure the PHPStan config references the stubs (see references/third-party-classes.md ). 2) Ensure a sane phpstan.neon for WordPress projects Keep paths focused on first-party code (plugin/theme directories). Exclude generated and vendored code ( vendor/ , node_modules/ , build artifacts, tests unless explicitly analyzed). Keep ignoreErrors entries narrow and documented. See: references/configuration.md 3) Fix errors with WordPress-specific typing (preferred) Prefer correcting types over ignoring errors. Common WP patterns that need help: REST endpoints: type request parameters using WP_REST_Request<...> Hook callbacks: add accurate @param types for callback args Database results and iterables: use array shapes or object shapes for query results Action Scheduler: type $args array shapes for job callbacks See: references/wordpress-annotations.md 4) Handle third-party plugin/theme classes (only when needed) When integrating with plugins/themes not present in the analysis environment: First, confirm the dependency is real (installed/required). Prefer plugin-specific stubs already used in the repo (common examples: php-stubs/woocommerce-stubs , php-stubs/acf-pro-stubs ). If PHPStan still cannot resolve classes, add targeted ignoreErrors patterns for the specific vendor prefix. See: references/third-party-classes.md 5) Baseline management (use as a migration tool, not a trash bin) Generate a baseline once for legacy code, then reduce it over time. Do not “baseline” newly introduced errors. See: references/configuration.md Verification Run PHPStan using the discovered command ( composer run ... or vendor/bin/phpstan analyse ). Confirm the baseline file (if used) is included and didn’t grow unexpectedly. Re-run after changing ignoreErrors to ensure patterns are not masking unrelated issues. Failure modes / debugging “Class not found”: confirm autoloading/stubs, or add a narrow ignore pattern Huge error counts after enabling PHPStan: reduce paths , add excludePaths , start at a lower level, then ratchet up Inconsistent types around hooks / REST params: add explicit PHPDoc (see references) rather than runtime guards Escalation If a type depends on a third-party plugin API you can’t confirm, ask for the dependency version or source before inventing types. If fixing requires adding new Composer dependencies (stubs/extensions), confirm it with the user first.