diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 90c3f00a..a6182aab 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,212 +1,182 @@
 name: Build
 
 on:
-    push:
-        branches-ignore:
-            - 'dependabot/**'
-    pull_request: ~
-    release:
-        types: [created]
-    schedule:
-        -
-            cron: "0 1 * * 6" # Run at 1am every Saturday
-    workflow_dispatch: ~
+  push:
+    branches-ignore:
+      - 'dependabot/**'
+  pull_request: ~
+  release:
+    types: [ created ]
+  schedule:
+    - cron: "0 1 * * 6" # Run at 1am every Saturday
+  workflow_dispatch: ~
 
 jobs:
-    tests:
-        runs-on: ubuntu-latest
-
-        name: "Sylius ${{ matrix.sylius }}, PHP ${{ matrix.php }}, Symfony ${{ matrix.symfony }}, MySQL ${{ matrix.mysql }}, Node ${{ matrix.node }}"
-
-        strategy:
-            fail-fast: false
-            matrix:
-                php: [ "8.1", "8.2", "8.3" ]
-                symfony: [ "^6.0" ]
-                sylius: [ "~1.13.0" ]
-                node: [ "18.x", "20.x" ]
-                mysql: [ "5.7", "8.0" ]
+  tests:
+    runs-on: ubuntu-latest
+
+    name: "Sylius ${{ matrix.sylius }}, PHP ${{ matrix.php }}, Symfony ${{ matrix.symfony }}, MySQL ${{ matrix.mysql }}, Node ${{ matrix.node }}"
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [ "8.1", "8.2", "8.3" ]
+        symfony: [ "^5.4", "^6.0" ]
+        sylius: [ "^1.12", "^1.13" ]
+        node: [ "18.x", "20.x" ]
+        mysql: [ "5.7", "8.0" ]
+    env:
+      APP_ENV: test
+      DATABASE_URL: "mysql://root:root@127.0.0.1/sylius?serverVersion=${{ matrix.mysql }}"
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "${{ matrix.php }}"
+          extensions: intl
+          tools: symfony
+          coverage: none
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "${{ matrix.node }}"
+
+      - name: Shutdown default MySQL
+        run: sudo service mysql stop
+
+      - name: Setup MySQL
+        uses: mirromutth/mysql-action@v1.1
+        with:
+          mysql version: "${{ matrix.mysql }}"
+          mysql root password: "root"
+
+      - name: Configure sysctl limits
+        run: |
+          sudo swapoff -a
+          sudo sysctl -w vm.swappiness=1
+          sudo sysctl -w fs.file-max=262144
+          sudo sysctl -w vm.max_map_count=262144
+
+      - name: Runs Elasticsearch
+        uses: elastic/elastic-github-actions/elasticsearch@master
+        with:
+          stack-version: 7.16.3
+
+      - name: Output PHP version for Symfony CLI
+        run: php -v | head -n 1 | awk '{ print $2 }' > .php-version
+
+      - name: Install certificates
+        run: symfony server:ca:install
+
+      - name: Run Chrome Headless
+        run: google-chrome-stable --enable-automation --disable-background-networking --no-default-browser-check --no-first-run --disable-popup-blocking --disable-default-apps --allow-insecure-localhost --disable-translate --disable-extensions --no-sandbox --enable-features=Metal --headless --remote-debugging-port=9222 --window-size=2880,1800 --proxy-server='direct://' --proxy-bypass-list='*' http://127.0.0.1 > /dev/null 2>&1 &
+
+      - name: Run webserver
+        run: (cd tests/Application && symfony server:start --port=8080 --dir=public --daemon)
+
+      - name: Get Composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache Composer
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json **/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-php-${{ matrix.php }}-composer-
+
+      - name: Restrict Symfony version
+        if: matrix.symfony != ''
+        run: |
+          composer global config --no-plugins allow-plugins.symfony/flex true
+          composer global require --no-progress --no-scripts --no-plugins "symfony/flex:^1.10"
+          composer config extra.symfony.require "${{ matrix.symfony }}"
+
+      - name: Restrict Sylius version
+        if: matrix.sylius != ''
+        run: composer require "sylius/sylius:${{ matrix.sylius }}" --no-update --no-scripts --no-interaction
+
+      - name: Install PHP dependencies
+        run: composer install --no-interaction --no-scripts
+
+      - name: Install Behat driver
+        run: vendor/bin/bdi browser:google-chrome drivers
+
+      - name: Get Yarn cache directory
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - name: Cache Yarn
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ${{ runner.os }}-node-${{ matrix.node }}-yarn-${{ hashFiles('**/package.json **/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ matrix.node }}-yarn-
+
+      - name: Install JS dependencies
+        run: (cd tests/Application && yarn install)
+
+      - name: Prepare test application database
+        run: |
+          (cd tests/Application && bin/console doctrine:database:create -vvv)
+          (cd tests/Application && bin/console doctrine:schema:create -vvv)
+
+      - name: Prepare test application assets
+        run: |
+          (cd tests/Application && bin/console assets:install public -vvv)
+          (cd tests/Application && yarn encore production)
+
+      - name: Prepare test application cache
+        run: (cd tests/Application && bin/console cache:warmup -vvv)
+
+      - name: Load fixtures in test application
+        run: (cd tests/Application && bin/console sylius:fixtures:load -n)
+
+      - name: Validate composer.json
+        run: composer validate --ansi --strict
+
+      - name: Validate database schema
+        run: (cd tests/Application && bin/console doctrine:schema:validate)
+
+      - name: Run PHPSpec
+        run: vendor/bin/phpspec run --ansi -f progress --no-interaction
+
+      - name: Run PHPUnit
+        run: vendor/bin/phpunit --colors=always
+
+      - name: Run Behat
+        if: ${{ matrix.sylius != '^1.13.0' }}
+        run: vendor/bin/behat --colors --strict -vvv --no-interaction  --tags '~@sylius113' || vendor/bin/behat --colors --strict -vvv --no-interaction --rerun --tags '~@sylius113'
+
+      - name: Run Behat
+        if: ${{ matrix.sylius == '^1.13.0' }}
+        run: vendor/bin/behat --colors --strict -vvv --no-interaction --tags '~@sylius112' || vendor/bin/behat --colors --strict -vvv --no-interaction --rerun --tags '~@sylius112'
+
+      - name: Upload Behat logs
+        uses: actions/upload-artifact@v3
+        if: failure()
+        with:
+          name: Behat logs
+          path: etc/build/
+          if-no-files-found: ignore
+
+      - name: Run PHPUnit
+        run: vendor/bin/phpunit --colors=always
+
+      - name: Failed build Slack notification
+        uses: rtCamp/action-slack-notify@v2
+        if: ${{ failure() && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master') }}
         env:
-            APP_ENV: test
-            DATABASE_URL: "mysql://root:root@127.0.0.1/sylius?serverVersion=${{ matrix.mysql }}"
-
-        steps:
-            -
-                uses: actions/checkout@v2
-
-            -
-                name: Setup PHP
-                uses: shivammathur/setup-php@v2
-                with:
-                    php-version: "${{ matrix.php }}"
-                    extensions: intl
-                    tools: symfony
-                    coverage: none
-
-            -
-                name: Setup Node
-                uses: actions/setup-node@v1
-                with:
-                    node-version: "${{ matrix.node }}"
-
-            -
-                name: Shutdown default MySQL
-                run: sudo service mysql stop
-
-            -
-                name: Setup MySQL
-                uses: mirromutth/mysql-action@v1.1
-                with:
-                    mysql version: "${{ matrix.mysql }}"
-                    mysql root password: "root"
-
-            -
-                name: Configure sysctl limits
-                run: |
-                    sudo swapoff -a
-                    sudo sysctl -w vm.swappiness=1
-                    sudo sysctl -w fs.file-max=262144
-                    sudo sysctl -w vm.max_map_count=262144
-
-            -
-                name: Runs Elasticsearch
-                uses: elastic/elastic-github-actions/elasticsearch@master
-                with:
-                    stack-version: 7.16.3
-
-            -
-                name: Output PHP version for Symfony CLI
-                run: php -v | head -n 1 | awk '{ print $2 }' > .php-version
-
-            -
-                name: Install certificates
-                run: symfony server:ca:install
-
-            -
-                name: Run Chrome Headless
-                run: google-chrome-stable --enable-automation --disable-background-networking --no-default-browser-check --no-first-run --disable-popup-blocking --disable-default-apps --allow-insecure-localhost --disable-translate --disable-extensions --no-sandbox --enable-features=Metal --headless --remote-debugging-port=9222 --window-size=2880,1800 --proxy-server='direct://' --proxy-bypass-list='*' http://127.0.0.1 > /dev/null 2>&1 &
-
-            -
-                name: Run webserver
-                run: (cd tests/Application && symfony server:start --port=8080 --dir=public --daemon)
-
-            -
-                name: Get Composer cache directory
-                id: composer-cache
-                run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-
-            -
-                name: Cache Composer
-                uses: actions/cache@v2
-                with:
-                    path: ${{ steps.composer-cache.outputs.dir }}
-                    key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json **/composer.lock') }}
-                    restore-keys: |
-                        ${{ runner.os }}-php-${{ matrix.php }}-composer-
-
-            -
-                name: Restrict Symfony version
-                if: matrix.symfony != ''
-                run: |
-                    composer global config --no-plugins allow-plugins.symfony/flex true
-                    composer global require --no-progress --no-scripts --no-plugins "symfony/flex:^1.10"
-                    composer config extra.symfony.require "${{ matrix.symfony }}"
-
-            -
-                name: Restrict Sylius version
-                if: matrix.sylius != ''
-                run: composer require "sylius/sylius:${{ matrix.sylius }}" --no-update --no-scripts --no-interaction
-
-            -
-                name: Install PHP dependencies
-                run: composer install --no-interaction --no-scripts
-
-            -
-                name: Get Yarn cache directory
-                id: yarn-cache
-                run: echo "::set-output name=dir::$(yarn cache dir)"
-
-            -
-                name: Cache Yarn
-                uses: actions/cache@v2
-                with:
-                    path: ${{ steps.yarn-cache.outputs.dir }}
-                    key: ${{ runner.os }}-node-${{ matrix.node }}-yarn-${{ hashFiles('**/package.json **/yarn.lock') }}
-                    restore-keys: |
-                        ${{ runner.os }}-node-${{ matrix.node }}-yarn-
-
-            -
-                name: Install JS dependencies
-                run: (cd tests/Application && yarn install)
-
-            -
-                name: Prepare test application database
-                run: |
-                    (cd tests/Application && bin/console doctrine:database:create -vvv)
-                    (cd tests/Application && bin/console doctrine:schema:create -vvv)
-
-            -
-                name: Prepare test application assets
-                run: |
-                    (cd tests/Application && bin/console assets:install public -vvv)
-                    (cd tests/Application && yarn encore production)
-
-            -
-                name: Prepare test application cache
-                run: (cd tests/Application && bin/console cache:warmup -vvv)
-
-            -
-                name: Load fixtures in test application
-                run: (cd tests/Application && bin/console sylius:fixtures:load -n)
-
-            -
-                name: Validate composer.json
-                run: composer validate --ansi --strict
-
-            -
-                name: Validate database schema
-                run: (cd tests/Application && bin/console doctrine:schema:validate)
-
-            -   name: Run ECS
-                run: vendor/bin/ecs check src
-
-            -
-                name: Run PHPSpec
-                run: vendor/bin/phpspec run --ansi -f progress --no-interaction
-
-            -
-                name: Run Behat
-                if: ${{ matrix.sylius != '~1.13.0' }}
-                run: vendor/bin/behat --colors --strict -vvv --no-interaction  --tags '~@sylius113' || vendor/bin/behat --colors --strict -vvv --no-interaction --rerun --tags '~@sylius113'
-
-            -
-                name: Run Behat
-                if: ${{ matrix.sylius == '~1.13.0' }}
-                run: vendor/bin/behat --colors --strict -vvv --no-interaction --tags '~@sylius112' || vendor/bin/behat --colors --strict -vvv --no-interaction --rerun --tags '~@sylius112'
-
-
-            -
-                name: Upload Behat logs
-                uses: actions/upload-artifact@v2
-                if: failure()
-                with:
-                    name: Behat logs
-                    path: etc/build/
-                    if-no-files-found: ignore
-
-            -
-                name: Run PHPUnit
-                run: vendor/bin/phpunit --colors=always
-
-            -
-                name: Failed build Slack notification
-                uses: rtCamp/action-slack-notify@v2
-                if: ${{ failure() && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master') }}
-                env:
-                    SLACK_CHANNEL: ${{ secrets.FAILED_BUILD_SLACK_CHANNEL }}
-                    SLACK_COLOR: ${{ job.status }}
-                    SLACK_ICON: https://github.com/rtCamp.png?size=48
-                    SLACK_MESSAGE: ':x:'
-                    SLACK_TITLE: Failed build on ${{ github.event.repository.name }} repository
-                    SLACK_USERNAME: ${{ secrets.FAILED_BUILD_SLACK_USERNAME }}
-                    SLACK_WEBHOOK: ${{ secrets.FAILED_BUILD_SLACK_WEBHOOK }}
+          SLACK_CHANNEL: ${{ secrets.FAILED_BUILD_SLACK_CHANNEL }}
+          SLACK_COLOR: ${{ job.status }}
+          SLACK_ICON: https://github.com/rtCamp.png?size=48
+          SLACK_MESSAGE: ':x:'
+          SLACK_TITLE: Failed build on ${{ github.event.repository.name }} repository
+          SLACK_USERNAME: ${{ secrets.FAILED_BUILD_SLACK_USERNAME }}
+          SLACK_WEBHOOK: ${{ secrets.FAILED_BUILD_SLACK_WEBHOOK }}
diff --git a/.github/workflows/coding_standard.yml b/.github/workflows/coding_standard.yml
new file mode 100644
index 00000000..8f49a540
--- /dev/null
+++ b/.github/workflows/coding_standard.yml
@@ -0,0 +1,81 @@
+name: Coding standard
+
+on:
+  push:
+    branches-ignore:
+      - 'dependabot/**'
+  pull_request: ~
+  release:
+    types: [ created ]
+  workflow_dispatch: ~
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    name: "Sylius ${{ matrix.sylius }}, PHP ${{ matrix.php }}, Symfony ${{ matrix.symfony }}"
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [ "8.1", "8.2", "8.3" ]
+        symfony: [ "^5.4", "^6.4" ]
+        sylius: [ "^1.12", "^1.13" ]
+        node: [ "18.x", "20.x" ]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "${{ matrix.php }}"
+          extensions: intl
+          tools: symfony
+          coverage: none
+
+      - name: Get Composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache Composer
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json', '**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-php-${{ matrix.php }}-composer-
+
+      - name: Restrict Symfony version
+        if: matrix.symfony != ''
+        run: |
+          composer global config --no-plugins allow-plugins.symfony/flex true
+          composer global require --no-progress --no-scripts --no-plugins "symfony/flex:^1.10"
+          composer config extra.symfony.require "${{ matrix.symfony }}"
+
+      - name: Restrict Sylius version
+        if: matrix.sylius != ''
+        run: composer require "sylius/sylius:${{ matrix.sylius }}" --no-update --no-scripts --no-interaction
+
+      - name: Install PHP dependencies
+        run: composer install --no-interaction
+        env:
+          SYMFONY_REQUIRE: ${{ matrix.symfony }}
+
+      - name: Run PHPStan
+        run: vendor/bin/phpstan analyse -c phpstan.neon -l 8 src/
+
+      - name: Run ECS
+        run: vendor/bin/ecs
+
+      - name: Failed build Slack notification
+        uses: rtCamp/action-slack-notify@v2
+        if: ${{ failure() && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master') }}
+        env:
+          SLACK_CHANNEL: ${{ secrets.FAILED_BUILD_SLACK_CHANNEL }}
+          SLACK_COLOR: ${{ job.status }}
+          SLACK_ICON: https://github.com/rtCamp.png?size=48
+          SLACK_MESSAGE: ':x:'
+          SLACK_TITLE: Failed build on ${{ github.event.repository.name }} repository
+          SLACK_USERNAME: ${{ secrets.FAILED_BUILD_SLACK_USERNAME }}
+          SLACK_WEBHOOK: ${{ secrets.FAILED_BUILD_SLACK_WEBHOOK }}
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 00000000..109ffc4a
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,17 @@
+parameters:
+    level: 8
+    reportUnmatchedIgnoredErrors: false
+    paths:
+        - src
+
+    excludePaths:
+        # Sitemap dependent providers
+        - 'src/SitemapProvider'
+        - 'src/Importer/AbstractImporter'
+        - 'tests/Application/config/bootstrap.php'
+        - 'tests/Fixture/PageFixtureTest.php'
+        - 'src/Controller/Helper'
+    ignoreErrors:
+        - identifier: missingType.iterableValue
+        - identifier: missingType.generics
+        - '#.*NodeParentInterface.*#'
diff --git a/src/CompilerPass/AuthenticationManagerPolyfillPass.php b/src/CompilerPass/AuthenticationManagerPolyfillPass.php
index a310ed98..15b5a9e5 100644
--- a/src/CompilerPass/AuthenticationManagerPolyfillPass.php
+++ b/src/CompilerPass/AuthenticationManagerPolyfillPass.php
@@ -17,7 +17,7 @@
 
 final class AuthenticationManagerPolyfillPass implements CompilerPassInterface
 {
-    public function process(ContainerBuilder $container)
+    public function process(ContainerBuilder $container): void
     {
         if (
             false === $container->has('security.authentication_manager')
diff --git a/src/Context/TaxonContext.php b/src/Context/TaxonContext.php
index 15037b6d..19df2b04 100644
--- a/src/Context/TaxonContext.php
+++ b/src/Context/TaxonContext.php
@@ -16,6 +16,7 @@
 use Sylius\Component\Core\Model\TaxonInterface;
 use Sylius\Component\Locale\Context\LocaleContextInterface;
 use Sylius\Component\Taxonomy\Repository\TaxonRepositoryInterface;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
 
 final class TaxonContext implements TaxonContextInterface
@@ -29,9 +30,12 @@ public function __construct(
 
     public function getTaxon(): TaxonInterface
     {
-        $slug = $this->requestStack->getCurrentRequest()->get('slug');
+        /** @var Request $request */
+        $request = $this->requestStack->getCurrentRequest();
+
+        $slug = $request->get('slug');
         $localeCode = $this->localeContext->getLocaleCode();
-        /** @var TaxonInterface $taxon */
+        /** @var TaxonInterface|null $taxon */
         $taxon = $this->taxonRepository->findOneBySlug($slug, $localeCode);
 
         if (null === $slug || null === $taxon) {
diff --git a/src/Controller/Action/Api/ListProductsByPartialNameAction.php b/src/Controller/Action/Api/ListProductsByPartialNameAction.php
index 283fba10..006f16f6 100644
--- a/src/Controller/Action/Api/ListProductsByPartialNameAction.php
+++ b/src/Controller/Action/Api/ListProductsByPartialNameAction.php
@@ -39,7 +39,8 @@ public function __invoke(Request $request): Response
             return new JsonResponse($itemsResponse->toArray());
         }
 
-        $products = $this->namedProductsFinder->findByNamePart($request->query->get('query'));
+        /** @var array $products */
+        $products = $this->namedProductsFinder->findByNamePart((string) $request->query->get('query'));
 
         /** @var ProductInterface $product */
         foreach ($products as $product) {
@@ -48,10 +49,10 @@ public function __invoke(Request $request): Response
             }
 
             $itemsResponse->addItem(new Item(
-                $productMainTaxon->getName(),
-                $product->getName(),
+                (string) $productMainTaxon->getName(),
+                (string) $product->getName(),
                 $product->getShortDescription(),
-                $this->productSlugTransformer->transform($product),
+                (string) $this->productSlugTransformer->transform($product),
                 $this->productChannelPriceTransformer->transform($product),
                 $this->productImageTransformer->transform($product)
             ));
diff --git a/src/Controller/Action/Shop/AbstractSearchAction.php b/src/Controller/Action/Shop/AbstractSearchAction.php
index fbd0ceaa..a32d249f 100644
--- a/src/Controller/Action/Shop/AbstractSearchAction.php
+++ b/src/Controller/Action/Shop/AbstractSearchAction.php
@@ -14,6 +14,7 @@
 
 use BitBag\SyliusElasticsearchPlugin\Controller\RequestDataHandler\DataHandlerInterface;
 use BitBag\SyliusElasticsearchPlugin\Finder\ShopProductsFinderInterface;
+use Symfony\Component\Form\FormError;
 use Symfony\Component\Form\FormFactoryInterface;
 use Symfony\Component\Form\FormInterface;
 use Twig\Environment;
@@ -30,9 +31,15 @@ public function __construct(
 
     protected function clearInvalidEntries(FormInterface $form, array $requestData): array
     {
+        /** @var FormError $error */
         foreach ($form->getErrors(true) as $error) {
+            /** @var FormInterface $errorOrigin */
             $errorOrigin = $error->getOrigin();
-            $path = ($errorOrigin->getParent()->getPropertyPath() ?? '') . $errorOrigin->getPropertyPath();
+
+            /** @var FormInterface $parent */
+            $parent = $errorOrigin->getParent();
+
+            $path = ($parent->getPropertyPath() ?? '') . $errorOrigin->getPropertyPath();
 
             $keys = explode('][', trim($path, '[]'));
 
diff --git a/src/Controller/Action/Shop/SiteWideProductsSearchAction.php b/src/Controller/Action/Shop/SiteWideProductsSearchAction.php
index 6b47f321..a0df90dd 100644
--- a/src/Controller/Action/Shop/SiteWideProductsSearchAction.php
+++ b/src/Controller/Action/Shop/SiteWideProductsSearchAction.php
@@ -14,6 +14,7 @@
 
 use BitBag\SyliusElasticsearchPlugin\Form\Type\SearchType;
 use BitBag\SyliusElasticsearchPlugin\Model\Search;
+use BitBag\SyliusElasticsearchPlugin\Model\SearchBox;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 
@@ -29,8 +30,11 @@ public function __invoke(Request $request): Response
             /** @var Search $search */
             $search = $form->getData();
 
+            /** @var SearchBox $searchBox */
+            $searchBox = $search->getBox();
+
             $data = array_merge(
-                ['query' => $search->getBox()->getQuery()],
+                ['query' => $searchBox->getQuery()],
                 ['facets' => $search->getFacets()],
                 $this->dataHandler->retrieveData($request->query->all()),
             );
diff --git a/src/Controller/RequestDataHandler/ShopProductListDataHandler.php b/src/Controller/RequestDataHandler/ShopProductListDataHandler.php
index bef607de..ebd3bcd4 100644
--- a/src/Controller/RequestDataHandler/ShopProductListDataHandler.php
+++ b/src/Controller/RequestDataHandler/ShopProductListDataHandler.php
@@ -32,10 +32,11 @@ public function __construct(
 
     public function retrieveData(array $requestData): array
     {
+        $data = [];
         $taxon = $this->taxonContext->getTaxon();
 
         $data[$this->namePropertyPrefix] = (string) $requestData[$this->namePropertyPrefix];
-        $data[$this->taxonsProperty] = strtolower($taxon->getCode());
+        $data[$this->taxonsProperty] = strtolower((string) $taxon->getCode());
         $data['taxon'] = $taxon;
         $data = array_merge(
             $data,
@@ -77,7 +78,7 @@ private function handleAttributesPrefixedProperty(
             return;
         }
 
-        $attributeTypes = $this->getAttributeTypes($attributesDefinitions);
+        $attributeTypes = $this->getAttributeTypes((array) $attributesDefinitions);
 
         foreach ($requestData['attributes'] as $key => $value) {
             if (!is_array($value) || 0 !== strpos($key, $this->attributePropertyPrefix)) {
diff --git a/src/Controller/RequestDataHandler/ShopProductsSortDataHandler.php b/src/Controller/RequestDataHandler/ShopProductsSortDataHandler.php
index 1fd5c14c..87378153 100644
--- a/src/Controller/RequestDataHandler/ShopProductsSortDataHandler.php
+++ b/src/Controller/RequestDataHandler/ShopProductsSortDataHandler.php
@@ -37,11 +37,12 @@ public function retrieveData(array $requestData): array
         $availableSorters = [$this->soldUnitsProperty, $this->createdAtProperty, $this->pricePropertyPrefix];
         $availableSorting = [self::SORT_ASC_INDEX, self::SORT_DESC_INDEX];
 
-        if (!in_array($orderBy, $availableSorters) || !in_array($sort, $availableSorting)) {
+        if (!in_array($orderBy, $availableSorters, true) || !in_array($sort, $availableSorting, true)) {
             throw new UnexpectedValueException();
         }
 
         if ($this->pricePropertyPrefix === $orderBy) {
+            /** @var string $channelCode */
             $channelCode = $this->channelContext->getChannel()->getCode();
             $orderBy = $this->channelPricingNameResolver->resolvePropertyName($channelCode);
         }
diff --git a/src/Controller/Response/DTO/Item.php b/src/Controller/Response/DTO/Item.php
index 1d6db042..1d75711c 100644
--- a/src/Controller/Response/DTO/Item.php
+++ b/src/Controller/Response/DTO/Item.php
@@ -77,10 +77,10 @@ public function toArray(): array
         return [
             'taxon_name' => $this->taxonName(),
             'name' => $this->name(),
-            'description' => $this->description() ?: '',
+            'description' => $this->description() ?? '',
             'slug' => $this->slug(),
             'price' => $this->price(),
-            'image' => $this->image() ?: '',
+            'image' => $this->image() ?? '',
         ];
     }
 }
diff --git a/src/EventListener/OrderProductsListener.php b/src/EventListener/OrderProductsListener.php
index a15e8844..0cde92a5 100644
--- a/src/EventListener/OrderProductsListener.php
+++ b/src/EventListener/OrderProductsListener.php
@@ -16,6 +16,7 @@
 use FOS\ElasticaBundle\Persister\ObjectPersisterInterface;
 use Sylius\Component\Core\Model\OrderInterface;
 use Sylius\Component\Core\Model\OrderItemInterface;
+use Sylius\Component\Resource\Model\ResourceInterface;
 use Symfony\Component\EventDispatcher\GenericEvent;
 use Webmozart\Assert\Assert;
 
@@ -34,7 +35,10 @@ public function updateOrderProducts(GenericEvent $event): void
 
         /** @var OrderItemInterface $orderItem */
         foreach ($order->getItems() as $orderItem) {
-            $this->resourceRefresher->refresh($orderItem->getProduct(), $this->productPersister);
+            /** @var ResourceInterface $product */
+            $product = $orderItem->getProduct();
+
+            $this->resourceRefresher->refresh($product, $this->productPersister);
         }
     }
 }
diff --git a/src/EventListener/ProductTaxonIndexListener.php b/src/EventListener/ProductTaxonIndexListener.php
index efd31e1d..a84e0a87 100644
--- a/src/EventListener/ProductTaxonIndexListener.php
+++ b/src/EventListener/ProductTaxonIndexListener.php
@@ -15,6 +15,7 @@
 use BitBag\SyliusElasticsearchPlugin\Refresher\ResourceRefresherInterface;
 use FOS\ElasticaBundle\Persister\ObjectPersisterInterface;
 use Sylius\Component\Core\Model\ProductTaxonInterface;
+use Sylius\Component\Resource\Model\ResourceInterface;
 
 final class ProductTaxonIndexListener
 {
@@ -26,6 +27,9 @@ public function __construct(
 
     public function updateIndex(ProductTaxonInterface $productTaxon): void
     {
-        $this->resourceRefresher->refresh($productTaxon->getProduct(), $this->objectPersister);
+        /** @var ResourceInterface $product */
+        $product = $productTaxon->getProduct();
+
+        $this->resourceRefresher->refresh($product, $this->objectPersister);
     }
 }
diff --git a/src/EventListener/ResourceIndexListener.php b/src/EventListener/ResourceIndexListener.php
index 3cf5faca..954e6e22 100644
--- a/src/EventListener/ResourceIndexListener.php
+++ b/src/EventListener/ResourceIndexListener.php
@@ -34,6 +34,7 @@ public function __construct(
 
     public function updateIndex(GenericEvent $event): void
     {
+        /** @var ResourceInterface|null $resource */
         $resource = $event->getSubject();
 
         Assert::isInstanceOf($resource, ResourceInterface::class);
@@ -41,21 +42,25 @@ public function updateIndex(GenericEvent $event): void
             $method = $config[self::GET_PARENT_METHOD_KEY] ?? null;
 
             if (null !== $method && method_exists($resource, $method)) {
+                /** @phpstan-ignore-next-line Variable method call on mixed or other bugs */
                 $resource = $resource->$method();
             }
 
             if ($resource instanceof $config[self::MODEL_KEY]) {
+                /** @phpstan-ignore-next-line refresh method needs ResourceInterface but ECS doesn't see $resource variable in method. */
                 $this->resourceRefresher->refresh($resource, $config[self::SERVICE_ID_KEY]);
             }
 
             if ($resource instanceof ProductInterface || $resource instanceof ProductVariantInterface) {
                 if (ProductAttribute::class === $config[self::MODEL_KEY]) {
                     foreach ($this->attributeRepository->findAll() as $attribute) {
+                        /** @var ResourceInterface $attribute */
                         $this->resourceRefresher->refresh($attribute, $config[self::SERVICE_ID_KEY]);
                     }
                 }
                 if (ProductOption::class === $config[self::MODEL_KEY]) {
                     foreach ($this->optionRepository->findAll() as $option) {
+                        /** @var ResourceInterface $option */
                         $this->resourceRefresher->refresh($option, $config[self::SERVICE_ID_KEY]);
                     }
                 }
diff --git a/src/Facet/AttributeFacet.php b/src/Facet/AttributeFacet.php
index f6fe4845..1e83f43e 100644
--- a/src/Facet/AttributeFacet.php
+++ b/src/Facet/AttributeFacet.php
@@ -52,14 +52,14 @@ public function getBucketLabel(array $bucket): string
 
     public function getLabel(): string
     {
-        return $this->getProductAttribute()->getName();
+        return (string) $this->getProductAttribute()->getName();
     }
 
     private function getFieldName(): string
     {
         return sprintf(
             '%s_%s.keyword',
-            $this->attributeNameResolver->resolvePropertyName($this->getProductAttribute()->getCode()),
+            $this->attributeNameResolver->resolvePropertyName((string) $this->getProductAttribute()->getCode()),
             $this->localeContext->getLocaleCode()
         );
     }
diff --git a/src/Facet/OptionFacet.php b/src/Facet/OptionFacet.php
index a1431d9c..6ff99ca2 100644
--- a/src/Facet/OptionFacet.php
+++ b/src/Facet/OptionFacet.php
@@ -49,11 +49,11 @@ public function getBucketLabel(array $bucket): string
 
     public function getLabel(): string
     {
-        return $this->productOption->getName();
+        return (string) $this->productOption->getName();
     }
 
     private function getFieldName(): string
     {
-        return $this->optionNameResolver->resolvePropertyName($this->productOption->getCode()) . '.keyword';
+        return $this->optionNameResolver->resolvePropertyName((string) $this->productOption->getCode()) . '.keyword';
     }
 }
diff --git a/src/Facet/PriceFacet.php b/src/Facet/PriceFacet.php
index 0fddbc25..faea18be 100644
--- a/src/Facet/PriceFacet.php
+++ b/src/Facet/PriceFacet.php
@@ -36,7 +36,7 @@ public function __construct(
     public function getAggregation(): AbstractAggregation
     {
         $priceFieldName = $this->channelPricingNameResolver->resolvePropertyName(
-            $this->shopperContext->getChannel()->getCode()
+            (string) $this->shopperContext->getChannel()->getCode()
         );
         $histogram = new Histogram(self::FACET_ID, $priceFieldName, $this->interval);
         $histogram->setMinimumDocumentCount(1);
@@ -47,7 +47,7 @@ public function getAggregation(): AbstractAggregation
     public function getQuery(array $selectedBuckets): AbstractQuery
     {
         $priceFieldName = $this->channelPricingNameResolver->resolvePropertyName(
-            $this->shopperContext->getChannel()->getCode()
+            (string) $this->shopperContext->getChannel()->getCode()
         );
         $query = new BoolQuery();
         foreach ($selectedBuckets as $selectedBucket) {
diff --git a/src/Finder/NamedProductsFinder.php b/src/Finder/NamedProductsFinder.php
index 94871c7e..dc7ba371 100644
--- a/src/Finder/NamedProductsFinder.php
+++ b/src/Finder/NamedProductsFinder.php
@@ -13,6 +13,7 @@
 namespace BitBag\SyliusElasticsearchPlugin\Finder;
 
 use BitBag\SyliusElasticsearchPlugin\QueryBuilder\QueryBuilderInterface;
+use Elastica\Query\AbstractQuery;
 use FOS\ElasticaBundle\Finder\FinderInterface;
 
 final class NamedProductsFinder implements NamedProductsFinderInterface
@@ -26,6 +27,7 @@ public function __construct(
     public function findByNamePart(string $namePart): ?array
     {
         $data = ['query' => $namePart];
+        /** @var AbstractQuery $query */
         $query = $this->queryBuilder->buildQuery($data);
 
         return $this->productsFinder->find($query);
diff --git a/src/Finder/ProductAttributesFinder.php b/src/Finder/ProductAttributesFinder.php
index 2c2b4c28..ad2326c9 100644
--- a/src/Finder/ProductAttributesFinder.php
+++ b/src/Finder/ProductAttributesFinder.php
@@ -13,6 +13,7 @@
 namespace BitBag\SyliusElasticsearchPlugin\Finder;
 
 use BitBag\SyliusElasticsearchPlugin\QueryBuilder\QueryBuilderInterface;
+use Elastica\Query\AbstractQuery;
 use FOS\ElasticaBundle\Finder\FinderInterface;
 use Sylius\Component\Core\Model\TaxonInterface;
 
@@ -28,8 +29,9 @@ public function __construct(
     public function findByTaxon(TaxonInterface $taxon): ?array
     {
         $data = [];
-        $data[$this->taxonsProperty] = strtolower($taxon->getCode());
+        $data[$this->taxonsProperty] = strtolower((string) $taxon->getCode());
 
+        /** @var AbstractQuery $query */
         $query = $this->attributesByTaxonQueryBuilder->buildQuery($data);
 
         return $this->attributesFinder->find($query, 20);
diff --git a/src/Finder/ProductOptionsFinder.php b/src/Finder/ProductOptionsFinder.php
index bcf122ed..8deee9f1 100644
--- a/src/Finder/ProductOptionsFinder.php
+++ b/src/Finder/ProductOptionsFinder.php
@@ -13,6 +13,7 @@
 namespace BitBag\SyliusElasticsearchPlugin\Finder;
 
 use BitBag\SyliusElasticsearchPlugin\QueryBuilder\QueryBuilderInterface;
+use Elastica\Query\AbstractQuery;
 use FOS\ElasticaBundle\Finder\FinderInterface;
 use Sylius\Component\Core\Model\TaxonInterface;
 
@@ -28,8 +29,9 @@ public function __construct(
     public function findByTaxon(TaxonInterface $taxon): ?array
     {
         $data = [];
-        $data[$this->taxonsProperty] = strtolower($taxon->getCode());
+        $data[$this->taxonsProperty] = strtolower((string) $taxon->getCode());
 
+        /** @var AbstractQuery $query */
         $query = $this->productOptionsByTaxonQueryBuilder->buildQuery($data);
 
         return $this->optionsFinder->find($query, 20);
diff --git a/src/Finder/ShopProductsFinder.php b/src/Finder/ShopProductsFinder.php
index bc3cafb4..3a869a03 100644
--- a/src/Finder/ShopProductsFinder.php
+++ b/src/Finder/ShopProductsFinder.php
@@ -31,6 +31,7 @@ public function __construct(
 
     public function find(array $data): Pagerfanta
     {
+        /** @var Query\BoolQuery $boolQuery */
         $boolQuery = $this->queryBuilder->buildQuery($data);
 
         if (array_key_exists('facets', $data) && is_array($data['facets'])) {
diff --git a/src/Form/Type/AbstractFilterType.php b/src/Form/Type/AbstractFilterType.php
index 39f91a2c..cc2de73b 100644
--- a/src/Form/Type/AbstractFilterType.php
+++ b/src/Form/Type/AbstractFilterType.php
@@ -26,7 +26,7 @@ public function configureOptions(OptionsResolver $resolver): void
         ]);
     }
 
-    public function getBlockPrefix(): ?string
+    public function getBlockPrefix(): string
     {
         return '';
     }
diff --git a/src/Form/Type/ChoiceMapper/ProductAttributesMapper.php b/src/Form/Type/ChoiceMapper/ProductAttributesMapper.php
index ec57788b..8b2f27dd 100644
--- a/src/Form/Type/ChoiceMapper/ProductAttributesMapper.php
+++ b/src/Form/Type/ChoiceMapper/ProductAttributesMapper.php
@@ -17,6 +17,7 @@
 use BitBag\SyliusElasticsearchPlugin\Formatter\StringFormatterInterface;
 use BitBag\SyliusElasticsearchPlugin\Repository\ProductAttributeValueRepositoryInterface;
 use Sylius\Component\Attribute\AttributeType\SelectAttributeType;
+use Sylius\Component\Core\Model\Taxon;
 use Sylius\Component\Locale\Context\LocaleContextInterface;
 use Sylius\Component\Product\Model\ProductAttributeInterface;
 
@@ -47,6 +48,7 @@ public function mapToChoices(ProductAttributeInterface $productAttribute): array
 
             return $choices;
         }
+        /** @var Taxon $taxon */
         $taxon = $this->taxonContext->getTaxon();
         $attributeValues = $this->productAttributeValueRepository->getUniqueAttributeValues($productAttribute, $taxon);
 
diff --git a/src/Form/Type/ChoiceMapper/ProductOptionsMapper.php b/src/Form/Type/ChoiceMapper/ProductOptionsMapper.php
index 2284c3f8..d2913686 100644
--- a/src/Form/Type/ChoiceMapper/ProductOptionsMapper.php
+++ b/src/Form/Type/ChoiceMapper/ProductOptionsMapper.php
@@ -31,6 +31,7 @@ public function mapToChoices(ProductOptionInterface $productOption): array
         array_walk(
             $productOptionValues,
             function (ProductOptionValueInterface $productOptionValue) use (&$choices): void {
+                /** @var string $value */
                 $value = $productOptionValue->getValue();
                 $choices[$value] = $this->stringFormatter->formatToLowercaseWithoutSpaces($value);
             }
diff --git a/src/Form/Type/PriceFilterType.php b/src/Form/Type/PriceFilterType.php
index b3ab1131..40c20f1c 100644
--- a/src/Form/Type/PriceFilterType.php
+++ b/src/Form/Type/PriceFilterType.php
@@ -70,7 +70,7 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
                 ],
             ])
             ->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
-                if (!empty($event->getData())) {
+                if (null !== $event->getData()) {
                     $data = [];
                     foreach ($event->getData() as $key => $item) {
                         $data[$key] = trim($item);
diff --git a/src/Form/Type/ProductAttributesFilterType.php b/src/Form/Type/ProductAttributesFilterType.php
index 410a1c06..387cf604 100644
--- a/src/Form/Type/ProductAttributesFilterType.php
+++ b/src/Form/Type/ProductAttributesFilterType.php
@@ -31,8 +31,10 @@ public function __construct(
 
     public function buildForm(FormBuilderInterface $builder, array $attributes): void
     {
-        foreach ($this->productAttributesContext->getAttributes() as $productAttribute) {
-            if (in_array($productAttribute->getCode(), $this->excludedAttributes)) {
+        /** @var array $options */
+        $options = $this->productAttributesContext->getAttributes();
+        foreach ($options as $productAttribute) {
+            if (in_array($productAttribute->getCode(), $this->excludedAttributes, true)) {
                 continue;
             }
 
diff --git a/src/Form/Type/ProductOptionsFilterType.php b/src/Form/Type/ProductOptionsFilterType.php
index ec93c8fc..075b9c7e 100644
--- a/src/Form/Type/ProductOptionsFilterType.php
+++ b/src/Form/Type/ProductOptionsFilterType.php
@@ -30,7 +30,9 @@ public function __construct(
 
     public function buildForm(FormBuilderInterface $builder, array $options): void
     {
-        foreach ($this->productOptionsContext->getOptions() as $productOption) {
+        /** @var array $options */
+        $options = $this->productOptionsContext->getOptions();
+        foreach ($options as $productOption) {
             $name = $this->optionNameResolver->resolvePropertyName($productOption->getCode());
             $choices = $this->productOptionsMapper->mapToChoices($productOption);
             $choices = array_unique($choices);
diff --git a/src/Form/Type/SearchFacetsType.php b/src/Form/Type/SearchFacetsType.php
index 1011dbfc..273bb08f 100644
--- a/src/Form/Type/SearchFacetsType.php
+++ b/src/Form/Type/SearchFacetsType.php
@@ -33,7 +33,7 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
             foreach ($facetData['buckets'] as $bucket) {
                 $choices[$facet->getBucketLabel($bucket)] = $bucket['key'];
             }
-            if (!empty($choices)) {
+            if ([] !== $choices) {
                 $builder
                     ->add(
                         $facetId,
diff --git a/src/Model/SearchFacets.php b/src/Model/SearchFacets.php
index f275cf95..f7e55f14 100644
--- a/src/Model/SearchFacets.php
+++ b/src/Model/SearchFacets.php
@@ -18,7 +18,7 @@ final class SearchFacets implements Iterator
 {
     private array $selectedBuckets = [];
 
-    public function __get(string $facetId)
+    public function __get(string $facetId): array
     {
         if (!array_key_exists($facetId, $this->selectedBuckets)) {
             return [];
@@ -27,7 +27,7 @@ public function __get(string $facetId)
         return $this->selectedBuckets[$facetId];
     }
 
-    public function __set(string $facetId, $selectedBuckets)
+    public function __set(string $facetId, string $selectedBuckets): void
     {
         $this->selectedBuckets[$facetId] = $selectedBuckets;
     }
@@ -68,7 +68,7 @@ public function valid(): bool
     {
         $key = key($this->selectedBuckets);
 
-        return null !== $key && false !== $key;
+        return null !== $key;
     }
 
     /**
diff --git a/src/PropertyBuilder/AttributeBuilder.php b/src/PropertyBuilder/AttributeBuilder.php
index 540113ba..8b60284e 100644
--- a/src/PropertyBuilder/AttributeBuilder.php
+++ b/src/PropertyBuilder/AttributeBuilder.php
@@ -49,22 +49,25 @@ function (ProductInterface $product, Document $document): void {
 
     private function resolveProductAttributes(ProductInterface $product, Document $document): void
     {
+        /** @var ProductAttributeValue $productAttribute */
         foreach ($product->getAttributes() as $productAttribute) {
             $attribute = $productAttribute->getAttribute();
-            if (!$attribute) {
+            if (null === $attribute) {
                 continue;
             }
-
             $this->processAttribute($attribute, $productAttribute, $document);
         }
     }
 
     private function resolveProductAttribute(
         array $attributeConfiguration,
-        $attributeValue,
+        mixed $attributeValue,
         ProductAttributeValue $productAttribute
     ): array {
-        if (SelectAttributeType::TYPE === $productAttribute->getAttribute()->getType()) {
+        /** @var AttributeInterface $attribute */
+        $attribute = $productAttribute->getAttribute();
+
+        if (SelectAttributeType::TYPE === $attribute->getType()) {
             $choices = $attributeConfiguration['choices'];
             if (is_array($attributeValue)) {
                 foreach ($attributeValue as $i => $item) {
@@ -87,8 +90,8 @@ private function resolveProductAttribute(
 
                     break;
                 case $attributeValue instanceof \DateTime:
-                    $attributeFormat = $productAttribute->getAttribute()->getConfiguration()['format'] ?? null;
-                    $defaultFormat = DateAttributeType::TYPE === $productAttribute->getAttribute()->getStorageType() ?
+                    $attributeFormat = $attribute->getConfiguration()['format'] ?? null;
+                    $defaultFormat = DateAttributeType::TYPE === $attribute->getStorageType() ?
                         self::DEFAULT_DATE_FORMAT :
                         self::DEFAULT_DATE_TIME_FORMAT
                     ;
@@ -109,6 +112,7 @@ private function processAttribute(
         ProductAttributeValue $productAttribute,
         Document $document
     ): void {
+        /** @var string $attributeCode */
         $attributeCode = $attribute->getCode();
         $attributeConfiguration = $attribute->getConfiguration();
 
@@ -122,7 +126,7 @@ private function processAttribute(
             $productAttribute
         );
 
-        $values = in_array($attribute->getStorageType(), [DateAttributeType::TYPE, DatetimeAttributeType::TYPE]) ?
+        $values = in_array($attribute->getStorageType(), [DateAttributeType::TYPE, DatetimeAttributeType::TYPE], true) ?
             ($values[0] ?? $values) :
             $values
         ;
diff --git a/src/PropertyBuilder/AttributeTaxonsBuilder.php b/src/PropertyBuilder/AttributeTaxonsBuilder.php
index 9f087a7c..009168dc 100644
--- a/src/PropertyBuilder/AttributeTaxonsBuilder.php
+++ b/src/PropertyBuilder/AttributeTaxonsBuilder.php
@@ -34,7 +34,7 @@ public function consumeEvent(PostTransformEvent $event): void
 
         if (!$documentAttribute instanceof AttributeInterface
             || !$documentAttribute instanceof ProductAttributeInterface
-            || in_array($documentAttribute->getCode(), $this->excludedAttributes)
+            || in_array($documentAttribute->getCode(), $this->excludedAttributes, true)
         ) {
             return;
         }
diff --git a/src/PropertyBuilder/ChannelPricingBuilder.php b/src/PropertyBuilder/ChannelPricingBuilder.php
index 0c98d253..ab557845 100644
--- a/src/PropertyBuilder/ChannelPricingBuilder.php
+++ b/src/PropertyBuilder/ChannelPricingBuilder.php
@@ -39,8 +39,11 @@ function (ProductInterface $product, Document $document): void {
                 $productVariant = $product->getVariants()->first();
 
                 foreach ($productVariant->getChannelPricings() as $channelPricing) {
+                    /** @var string $channelCode */
+                    $channelCode = $channelPricing->getChannelCode();
+
                     $propertyName = $this->channelPricingNameResolver
-                        ->resolvePropertyName($channelPricing->getChannelCode());
+                        ->resolvePropertyName($channelCode);
 
                     $document->set($propertyName, $channelPricing->getPrice());
                 }
diff --git a/src/PropertyBuilder/OptionBuilder.php b/src/PropertyBuilder/OptionBuilder.php
index acc6f6ce..6c19b757 100644
--- a/src/PropertyBuilder/OptionBuilder.php
+++ b/src/PropertyBuilder/OptionBuilder.php
@@ -17,6 +17,7 @@
 use Elastica\Document;
 use FOS\ElasticaBundle\Event\PostTransformEvent;
 use Sylius\Component\Core\Model\ProductInterface;
+use Sylius\Component\Product\Model\ProductOptionInterface;
 
 final class OptionBuilder extends AbstractBuilder
 {
@@ -41,10 +42,18 @@ private function resolveProductOptions(ProductInterface $product, Document $docu
     {
         foreach ($product->getVariants() as $productVariant) {
             foreach ($productVariant->getOptionValues() as $productOptionValue) {
-                $optionCode = $productOptionValue->getOption()->getCode();
+                /** @var ProductOptionInterface $option */
+                $option = $productOptionValue->getOption();
+
+                /** @var string $optionCode */
+                $optionCode = $option->getCode();
+
+                /** @var string $value */
+                $value = $productOptionValue->getValue();
+
                 $index = $this->optionNameResolver->resolvePropertyName($optionCode);
                 $options = $document->has($index) ? $document->get($index) : [];
-                $value = $this->stringFormatter->formatToLowercaseWithoutSpaces($productOptionValue->getValue());
+                $value = $this->stringFormatter->formatToLowercaseWithoutSpaces($value);
                 $options[] = $value;
 
                 $document->set($index, array_values(array_unique($options)));
diff --git a/src/PropertyBuilder/ProductCreatedAtPropertyBuilder.php b/src/PropertyBuilder/ProductCreatedAtPropertyBuilder.php
index cf844413..c2083b14 100644
--- a/src/PropertyBuilder/ProductCreatedAtPropertyBuilder.php
+++ b/src/PropertyBuilder/ProductCreatedAtPropertyBuilder.php
@@ -15,6 +15,7 @@
 use Elastica\Document;
 use FOS\ElasticaBundle\Event\PostTransformEvent;
 use Sylius\Component\Core\Model\ProductInterface;
+use Webmozart\Assert\Assert;
 
 final class ProductCreatedAtPropertyBuilder extends AbstractBuilder
 {
@@ -29,6 +30,7 @@ public function consumeEvent(PostTransformEvent $event): void
             $event,
             ProductInterface::class,
             function (ProductInterface $product, Document $document): void {
+                Assert::notNull($product->getCreatedAt());
                 $createdAt = (int) $product->getCreatedAt()->format('U');
 
                 $document->set($this->createdAtProperty, $createdAt);
diff --git a/src/PropertyBuilder/ProductDescriptionBuilder.php b/src/PropertyBuilder/ProductDescriptionBuilder.php
index 37d92e09..060e16e6 100644
--- a/src/PropertyBuilder/ProductDescriptionBuilder.php
+++ b/src/PropertyBuilder/ProductDescriptionBuilder.php
@@ -33,8 +33,11 @@ public function consumeEvent(PostTransformEvent $event): void
             function (ProductInterface $product, Document $document): void {
                 /** @var ProductTranslationInterface $productTranslation */
                 foreach ($product->getTranslations() as $productTranslation) {
+                    /** @var string $locale */
+                    $locale = $productTranslation->getLocale();
+
                     $propertyName = $this->productDescriptionNameResolver->resolvePropertyName(
-                        $productTranslation->getLocale()
+                        $locale
                     );
                     $document->set($propertyName, $productTranslation->getDescription());
                 }
diff --git a/src/PropertyBuilder/ProductNameBuilder.php b/src/PropertyBuilder/ProductNameBuilder.php
index 97328762..71a306fc 100644
--- a/src/PropertyBuilder/ProductNameBuilder.php
+++ b/src/PropertyBuilder/ProductNameBuilder.php
@@ -33,8 +33,11 @@ public function consumeEvent(PostTransformEvent $event): void
             function (ProductInterface $product, Document $document): void {
                 /** @var ProductTranslationInterface $productTranslation */
                 foreach ($product->getTranslations() as $productTranslation) {
+                    /** @var string $locale */
+                    $locale = $productTranslation->getLocale();
+
                     $propertyName = $this->productNameNameResolver
-                        ->resolvePropertyName($productTranslation->getLocale());
+                        ->resolvePropertyName($locale);
 
                     $document->set($propertyName, $productTranslation->getName());
                 }
diff --git a/src/PropertyBuilder/ProductShortDescriptionBuilder.php b/src/PropertyBuilder/ProductShortDescriptionBuilder.php
index 158be691..8e247567 100644
--- a/src/PropertyBuilder/ProductShortDescriptionBuilder.php
+++ b/src/PropertyBuilder/ProductShortDescriptionBuilder.php
@@ -33,8 +33,11 @@ public function consumeEvent(PostTransformEvent $event): void
             function (ProductInterface $product, Document $document): void {
                 /** @var ProductTranslationInterface $productTranslation */
                 foreach ($product->getTranslations() as $productTranslation) {
+                    /** @var string $locale */
+                    $locale = $productTranslation->getLocale();
+
                     $propertyName = $this->productShortDescriptionNameResolver->resolvePropertyName(
-                        $productTranslation->getLocale()
+                        $locale
                     );
                     $document->set($propertyName, $productTranslation->getShortDescription());
                 }
diff --git a/src/PropertyBuilder/ProductTaxonPositionPropertyBuilder.php b/src/PropertyBuilder/ProductTaxonPositionPropertyBuilder.php
index b88fd649..ca820ced 100644
--- a/src/PropertyBuilder/ProductTaxonPositionPropertyBuilder.php
+++ b/src/PropertyBuilder/ProductTaxonPositionPropertyBuilder.php
@@ -16,6 +16,7 @@
 use Elastica\Document;
 use FOS\ElasticaBundle\Event\PostTransformEvent;
 use Sylius\Component\Core\Model\ProductInterface;
+use Sylius\Component\Core\Model\TaxonInterface;
 
 final class ProductTaxonPositionPropertyBuilder extends AbstractBuilder
 {
@@ -30,10 +31,16 @@ public function consumeEvent(PostTransformEvent $event): void
             $event,
             ProductInterface::class,
             function (ProductInterface $product, Document $document): void {
-                foreach ($product->getProductTaxons() as $taxon) {
+                foreach ($product->getProductTaxons() as $productTaxon) {
+                    /** @var TaxonInterface $taxon */
+                    $taxon = $productTaxon->getTaxon();
+
+                    /** @var string $code */
+                    $code = $taxon->getCode();
+
                     $document->set(
-                        $this->taxonPositionNameResolver->resolvePropertyName($taxon->getTaxon()->getCode()),
-                        $taxon->getPosition()
+                        $this->taxonPositionNameResolver->resolvePropertyName($code),
+                        $productTaxon->getPosition()
                     );
                 }
             }
diff --git a/src/PropertyBuilder/SoldUnitsPropertyBuilder.php b/src/PropertyBuilder/SoldUnitsPropertyBuilder.php
index b74682d1..aaeceba8 100644
--- a/src/PropertyBuilder/SoldUnitsPropertyBuilder.php
+++ b/src/PropertyBuilder/SoldUnitsPropertyBuilder.php
@@ -16,6 +16,7 @@
 use Elastica\Document;
 use FOS\ElasticaBundle\Event\PostTransformEvent;
 use Sylius\Component\Core\Model\ProductInterface;
+use Sylius\Component\Core\Model\ProductVariantInterface;
 
 final class SoldUnitsPropertyBuilder extends AbstractBuilder
 {
@@ -33,6 +34,7 @@ public function consumeEvent(PostTransformEvent $event): void
             function (ProductInterface $product, Document $document): void {
                 $soldUnits = 0;
 
+                /** @var ProductVariantInterface $productVariant */
                 foreach ($product->getVariants() as $productVariant) {
                     $soldUnits += $this->orderItemRepository->countByVariant($productVariant);
                 }
diff --git a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeDateQueryBuilder.php b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeDateQueryBuilder.php
index 357869b6..5e2758b1 100644
--- a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeDateQueryBuilder.php
+++ b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeDateQueryBuilder.php
@@ -24,7 +24,7 @@ class AttributesTypeDateQueryBuilder implements AttributesQueryBuilderCollectorI
 
     public function supports(string $type): bool
     {
-        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE);
+        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE, true);
     }
 
     public function buildQuery(array $data, string $localCode): BoolQuery
diff --git a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeNumberQueryBuilder.php b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeNumberQueryBuilder.php
index 3af17e03..1c4d5937 100644
--- a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeNumberQueryBuilder.php
+++ b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeNumberQueryBuilder.php
@@ -25,7 +25,7 @@ class AttributesTypeNumberQueryBuilder implements AttributesQueryBuilderCollecto
 
     public function supports(string $type): bool
     {
-        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE);
+        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE, true);
     }
 
     public function buildQuery(array $data, string $localCode): BoolQuery
diff --git a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeTextQueryBuilder.php b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeTextQueryBuilder.php
index cc3cc9e8..02e8bc61 100644
--- a/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeTextQueryBuilder.php
+++ b/src/QueryBuilder/AttributesQueryBuilder/AttributesTypeTextQueryBuilder.php
@@ -25,7 +25,7 @@ class AttributesTypeTextQueryBuilder implements AttributesQueryBuilderCollectorI
 
     public function supports(string $type): bool
     {
-        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE);
+        return in_array($type, self::AVAILABLE_ATTRIBUTES_TYPE, true);
     }
 
     public function buildQuery(array $data, string $localCode): BoolQuery
diff --git a/src/QueryBuilder/FormQueryBuilder/SiteWideFacetsQueryBuilder.php b/src/QueryBuilder/FormQueryBuilder/SiteWideFacetsQueryBuilder.php
index eb563524..856d0f24 100644
--- a/src/QueryBuilder/FormQueryBuilder/SiteWideFacetsQueryBuilder.php
+++ b/src/QueryBuilder/FormQueryBuilder/SiteWideFacetsQueryBuilder.php
@@ -12,7 +12,6 @@
 namespace BitBag\SyliusElasticsearchPlugin\QueryBuilder\FormQueryBuilder;
 
 use BitBag\SyliusElasticsearchPlugin\Facet\RegistryInterface;
-use BitBag\SyliusElasticsearchPlugin\Model\Search;
 use BitBag\SyliusElasticsearchPlugin\QueryBuilder\QueryBuilderInterface;
 use Elastica\Query;
 use Symfony\Component\Form\FormEvent;
@@ -27,9 +26,10 @@ public function __construct(
 
     public function getQuery(FormEvent $event): Query
     {
-        /** @var Search $data */
+        /** @var array $data */
         $data = $event->getData();
 
+        /** @var Query\BoolQuery $boolQuery */
         $boolQuery = $this->queryBuilder->buildQuery([
             'query' => $data['box']['query'] ?? '',
         ]);
diff --git a/src/QueryBuilder/FormQueryBuilder/TaxonFacetsQueryBuilder.php b/src/QueryBuilder/FormQueryBuilder/TaxonFacetsQueryBuilder.php
index fc4e1a03..3378c9de 100644
--- a/src/QueryBuilder/FormQueryBuilder/TaxonFacetsQueryBuilder.php
+++ b/src/QueryBuilder/FormQueryBuilder/TaxonFacetsQueryBuilder.php
@@ -34,6 +34,7 @@ public function getQuery(FormEvent $event, string $namePropertyPrefix): Query
 
         $data = $this->shopProductListDataHandler->retrieveData($eventData);
 
+        /** @var Query\BoolQuery $boolQuery */
         $boolQuery = $this->searchProductsQueryBuilder->buildQuery($data);
 
         foreach ($data['facets'] ?? [] as $facetId => $selectedBuckets) {
diff --git a/src/QueryBuilder/HasChannelQueryBuilder.php b/src/QueryBuilder/HasChannelQueryBuilder.php
index 99d39eb3..e09cdc40 100644
--- a/src/QueryBuilder/HasChannelQueryBuilder.php
+++ b/src/QueryBuilder/HasChannelQueryBuilder.php
@@ -27,7 +27,9 @@ public function __construct(
     public function buildQuery(array $data): ?AbstractQuery
     {
         $channelQuery = new Terms($this->channelsProperty);
-        $channelQuery->setTerms([strtolower($this->channelContext->getChannel()->getCode())]);
+        /** @var string $channelCode */
+        $channelCode = $this->channelContext->getChannel()->getCode();
+        $channelQuery->setTerms([strtolower($channelCode)]);
 
         return $channelQuery;
     }
diff --git a/src/QueryBuilder/HasPriceBetweenQueryBuilder.php b/src/QueryBuilder/HasPriceBetweenQueryBuilder.php
index 4efdb367..130e0759 100644
--- a/src/QueryBuilder/HasPriceBetweenQueryBuilder.php
+++ b/src/QueryBuilder/HasPriceBetweenQueryBuilder.php
@@ -22,6 +22,7 @@
 use Sylius\Component\Core\Model\ChannelInterface;
 use Sylius\Component\Currency\Context\CurrencyContextInterface;
 use Sylius\Component\Currency\Converter\CurrencyConverterInterface;
+use Webmozart\Assert\Assert;
 
 final class HasPriceBetweenQueryBuilder implements QueryBuilderInterface
 {
@@ -39,9 +40,15 @@ public function buildQuery(array $data): ?AbstractQuery
         $dataMinPrice = $this->getDataByKey($data, $this->priceNameResolver->resolveMinPriceName());
         $dataMaxPrice = $this->getDataByKey($data, $this->priceNameResolver->resolveMaxPriceName());
 
+        // PHPStan is not right here: Only booleans are allowed in a ternary operator condition, string|null given
+        // When we change the functionality, it breaks search filtering on empty price fields value
+        /** @phpstan-ignore-next-line  */
         $minPrice = $dataMinPrice ? $this->resolveBasePrice($dataMinPrice) : null;
+
+        /** @phpstan-ignore-next-line  */
         $maxPrice = $dataMaxPrice ? $this->resolveBasePrice($dataMaxPrice) : null;
 
+        /** @var string $channelCode */
         $channelCode = $this->channelContext->getChannel()->getCode();
         $propertyName = $this->channelPricingNameResolver->resolvePropertyName($channelCode);
         $rangeQuery = new Range();
@@ -62,8 +69,13 @@ private function resolveBasePrice(string $price): int
         $price = $this->convertFromString($price);
         /** @var ChannelInterface $channel */
         $channel = $this->channelContext->getChannel();
+        $channelBaseCurrency = $channel->getBaseCurrency();
+
+        Assert::notNull($channelBaseCurrency);
+
         $currentCurrencyCode = $this->currencyContext->getCurrencyCode();
-        $channelBaseCurrencyCode = $channel->getBaseCurrency()->getCode();
+        /** @var string $channelBaseCurrencyCode */
+        $channelBaseCurrencyCode = $channelBaseCurrency->getCode();
 
         if ($currentCurrencyCode !== $channelBaseCurrencyCode) {
             $price = $this->currencyConverter->convert($price, $currentCurrencyCode, $channelBaseCurrencyCode);
@@ -80,7 +92,10 @@ private function convertFromString(string $price): int
 
         $transformer = new SyliusMoneyTransformer(2, false, NumberFormatter::ROUND_HALFUP, 100);
 
-        return $transformer->reverseTransform($price);
+        /** @var int $convertedPrice */
+        $convertedPrice = $transformer->reverseTransform($price);
+
+        return $convertedPrice;
     }
 
     private function getDataByKey(array $data, ?string $key = null): ?string
@@ -90,6 +105,7 @@ private function getDataByKey(array $data, ?string $key = null): ?string
 
     private function getQueryParamValue(?int $min, ?int $max): ?array
     {
+        $paramValue = null;
         foreach (['gte' => $min, 'lte' => $max] as $key => $value) {
             if (null !== $value) {
                 $paramValue[$key] = $value;
diff --git a/src/QueryBuilder/ProductAttributesByTaxonQueryBuilder.php b/src/QueryBuilder/ProductAttributesByTaxonQueryBuilder.php
index afde00fc..0c5c3ce9 100644
--- a/src/QueryBuilder/ProductAttributesByTaxonQueryBuilder.php
+++ b/src/QueryBuilder/ProductAttributesByTaxonQueryBuilder.php
@@ -14,6 +14,7 @@
 
 use Elastica\Query\AbstractQuery;
 use Elastica\Query\BoolQuery;
+use Webmozart\Assert\Assert;
 
 final class ProductAttributesByTaxonQueryBuilder implements QueryBuilderInterface
 {
@@ -27,6 +28,8 @@ public function buildQuery(array $data): ?AbstractQuery
         $boolQuery = new BoolQuery();
         $taxonQuery = $this->hasTaxonQueryBuilder->buildQuery($data);
 
+        Assert::notNull($taxonQuery);
+
         $boolQuery->addMust($taxonQuery);
 
         return $boolQuery;
diff --git a/src/QueryBuilder/ProductOptionsByTaxonQueryBuilder.php b/src/QueryBuilder/ProductOptionsByTaxonQueryBuilder.php
index 42c87cec..e6ec4099 100644
--- a/src/QueryBuilder/ProductOptionsByTaxonQueryBuilder.php
+++ b/src/QueryBuilder/ProductOptionsByTaxonQueryBuilder.php
@@ -14,6 +14,7 @@
 
 use Elastica\Query\AbstractQuery;
 use Elastica\Query\BoolQuery;
+use Webmozart\Assert\Assert;
 
 final class ProductOptionsByTaxonQueryBuilder implements QueryBuilderInterface
 {
@@ -27,6 +28,8 @@ public function buildQuery(array $data): ?AbstractQuery
         $boolQuery = new BoolQuery();
         $taxonQuery = $this->hasTaxonQueryBuilder->buildQuery($data);
 
+        Assert::notNull($taxonQuery);
+
         $boolQuery->addMust($taxonQuery);
 
         return $boolQuery;
diff --git a/src/QueryBuilder/SiteWideProductsQueryBuilder.php b/src/QueryBuilder/SiteWideProductsQueryBuilder.php
index 0b83d2c5..6b14e572 100644
--- a/src/QueryBuilder/SiteWideProductsQueryBuilder.php
+++ b/src/QueryBuilder/SiteWideProductsQueryBuilder.php
@@ -14,6 +14,7 @@
 
 use Elastica\Query\AbstractQuery;
 use Elastica\Query\BoolQuery;
+use Webmozart\Assert\Assert;
 
 final class SiteWideProductsQueryBuilder implements QueryBuilderInterface
 {
@@ -28,8 +29,14 @@ public function buildQuery(array $data): ?AbstractQuery
     {
         $boolQuery = new BoolQuery();
 
-        $boolQuery->addMust($this->isEnabledQueryBuilder->buildQuery([]));
-        $boolQuery->addMust($this->hasChannelQueryBuilder->buildQuery([]));
+        $isEnabledQuery = $this->isEnabledQueryBuilder->buildQuery([]);
+        $hasChannelQuery = $this->hasChannelQueryBuilder->buildQuery([]);
+
+        Assert::notNull($isEnabledQuery);
+        Assert::notNull($hasChannelQuery);
+
+        $boolQuery->addMust($isEnabledQuery);
+        $boolQuery->addMust($hasChannelQuery);
 
         $nameQuery = $this->containsNameQueryBuilder->buildQuery($data);
         $this->addMustIfNotNull($nameQuery, $boolQuery);
diff --git a/src/QueryBuilder/TaxonProductsQueryBuilder.php b/src/QueryBuilder/TaxonProductsQueryBuilder.php
index d81132d9..cc562af5 100644
--- a/src/QueryBuilder/TaxonProductsQueryBuilder.php
+++ b/src/QueryBuilder/TaxonProductsQueryBuilder.php
@@ -14,6 +14,7 @@
 
 use Elastica\Query\AbstractQuery;
 use Elastica\Query\BoolQuery;
+use Webmozart\Assert\Assert;
 
 final class TaxonProductsQueryBuilder implements QueryBuilderInterface
 {
@@ -34,8 +35,14 @@ public function buildQuery(array $data): AbstractQuery
     {
         $boolQuery = new BoolQuery();
 
-        $boolQuery->addMust($this->isEnabledQueryBuilder->buildQuery($data));
-        $boolQuery->addMust($this->hasChannelQueryBuilder->buildQuery($data));
+        $isEnabledQuery = $this->isEnabledQueryBuilder->buildQuery($data);
+        $hasChannelQuery = $this->hasChannelQueryBuilder->buildQuery($data);
+
+        Assert::notNull($isEnabledQuery);
+        Assert::notNull($hasChannelQuery);
+
+        $boolQuery->addMust($isEnabledQuery);
+        $boolQuery->addMust($hasChannelQuery);
 
         $nameQuery = $this->containsNameQueryBuilder->buildQuery($data);
         $this->addMustIfNotNull($nameQuery, $boolQuery);
@@ -57,7 +64,9 @@ private function resolveOptionQuery(BoolQuery $boolQuery, array $data): void
         foreach ($data as $key => $value) {
             if (0 === strpos($key, $this->optionPropertyPrefix) && 0 < count($value)) {
                 $optionQuery = $this->hasOptionsQueryBuilder->buildQuery(['option' => $key, 'option_values' => $value]);
-                $boolQuery->addMust($optionQuery);
+                if (null !== $optionQuery) {
+                    $boolQuery->addMust($optionQuery);
+                }
             }
         }
     }
@@ -67,7 +76,9 @@ private function resolveAttributeQuery(BoolQuery $boolQuery, array $data): void
         foreach ($data as $key => $value) {
             if (0 === strpos($key, $this->attributePropertyPrefix) && 0 < count($value)) {
                 $optionQuery = $this->hasAttributesQueryBuilder->buildQuery(['attribute' => $key, 'attribute_values' => $value]);
-                $boolQuery->addMust($optionQuery);
+                if (null !== $optionQuery) {
+                    $boolQuery->addMust($optionQuery);
+                }
             }
         }
     }
diff --git a/src/Repository/OrderItemRepository.php b/src/Repository/OrderItemRepository.php
index 5ff4dfe1..40c22e43 100644
--- a/src/Repository/OrderItemRepository.php
+++ b/src/Repository/OrderItemRepository.php
@@ -25,11 +25,14 @@ public function __construct(
 
     public function countByVariant(ProductVariantInterface $variant, array $orderStates = []): int
     {
-        if (empty($orderStates)) {
+        if ([] !== $orderStates) {
             $orderStates = [OrderInterface::STATE_CANCELLED, OrderInterface::STATE_CART];
         }
 
-        return (int) ($this->baseOrderItemRepository
+        /** @var EntityRepository $baseOrderItemRepository */
+        $baseOrderItemRepository = $this->baseOrderItemRepository;
+
+        return (int) ($baseOrderItemRepository
             ->createQueryBuilder('oi')
             ->select('SUM(oi.quantity)')
             ->join('oi.order', 'o')
diff --git a/src/Repository/ProductAttributeRepository.php b/src/Repository/ProductAttributeRepository.php
index 2255c193..10f4f56c 100644
--- a/src/Repository/ProductAttributeRepository.php
+++ b/src/Repository/ProductAttributeRepository.php
@@ -12,7 +12,7 @@
 
 namespace BitBag\SyliusElasticsearchPlugin\Repository;
 
-use Doctrine\ORM\QueryBuilder;
+use Doctrine\ORM\EntityRepository;
 use Sylius\Component\Resource\Repository\RepositoryInterface;
 
 class ProductAttributeRepository implements ProductAttributeRepositoryInterface
@@ -24,10 +24,11 @@ public function __construct(
 
     public function getAttributeTypeByName(string $attributeName): string
     {
-        /** @var QueryBuilder $queryBuilder */
-        $queryBuilder = $this->productAttributeRepository->createQueryBuilder('p');
+        /** @var EntityRepository $queryBuilder */
+        $queryBuilder = $this->productAttributeRepository;
 
         $result = $queryBuilder
+            ->createQueryBuilder('p')
             ->select('p.type')
             ->where('p.code = :code')
             ->setParameter(':code', $attributeName)
@@ -39,12 +40,15 @@ public function getAttributeTypeByName(string $attributeName): string
 
     public function findAllWithTranslations(?string $locale): array
     {
-        /** @var QueryBuilder $queryBuilder */
-        $queryBuilder = $this->productAttributeRepository->createQueryBuilder('o');
+        /** @var EntityRepository $productAttributeRepository */
+        $productAttributeRepository = $this->productAttributeRepository;
+
+        $queryBuilder = $productAttributeRepository->createQueryBuilder('o');
 
         if (null !== $locale) {
             $queryBuilder
                 ->addSelect('translation')
+                /** @phpstan-ignore-next-line phpstan can't read relationship correctly */
                 ->leftJoin('o.translations', 'translation', 'ot')
                 ->andWhere('translation.locale = :locale')
                 ->setParameter('locale', $locale)
diff --git a/src/Repository/ProductAttributeValueRepository.php b/src/Repository/ProductAttributeValueRepository.php
index 4e0730ad..e109ec5a 100644
--- a/src/Repository/ProductAttributeValueRepository.php
+++ b/src/Repository/ProductAttributeValueRepository.php
@@ -12,6 +12,7 @@
 
 namespace BitBag\SyliusElasticsearchPlugin\Repository;
 
+use Doctrine\ORM\EntityRepository;
 use Sylius\Component\Attribute\Model\AttributeInterface;
 use Sylius\Component\Product\Repository\ProductAttributeValueRepositoryInterface as BaseAttributeValueRepositoryInterface;
 use Sylius\Component\Taxonomy\Model\Taxon;
@@ -26,7 +27,10 @@ public function __construct(
 
     public function getUniqueAttributeValues(AttributeInterface $productAttribute, Taxon $taxon): array
     {
-        $queryBuilder = $this->baseAttributeValueRepository->createQueryBuilder('o');
+        /** @var EntityRepository $baseAttributeValueRepository */
+        $baseAttributeValueRepository = $this->baseAttributeValueRepository;
+
+        $queryBuilder = $baseAttributeValueRepository->createQueryBuilder('o');
 
         /** @var string|null $storageType */
         $storageType = $productAttribute->getStorageType();
diff --git a/src/Repository/ProductOptionRepository.php b/src/Repository/ProductOptionRepository.php
index df513c81..07af6300 100644
--- a/src/Repository/ProductOptionRepository.php
+++ b/src/Repository/ProductOptionRepository.php
@@ -12,7 +12,7 @@
 
 namespace BitBag\SyliusElasticsearchPlugin\Repository;
 
-use Doctrine\ORM\QueryBuilder;
+use Doctrine\ORM\EntityRepository;
 use Sylius\Component\Resource\Repository\RepositoryInterface;
 
 class ProductOptionRepository implements ProductOptionRepositoryInterface
@@ -24,12 +24,14 @@ public function __construct(
 
     public function findAllWithTranslations(?string $locale): array
     {
-        /** @var QueryBuilder $queryBuilder */
-        $queryBuilder = $this->productOptionRepository->createQueryBuilder('o');
+        /** @var EntityRepository $queryBuilder */
+        $queryBuilder = $this->productOptionRepository;
 
         if (null !== $locale) {
             $queryBuilder
+                ->createQueryBuilder('o')
                 ->addSelect('translation')
+                /** @phpstan-ignore-next-line phpstan can't read relationship correctly */
                 ->leftJoin('o.translations', 'translation', 'ot')
                 ->andWhere('translation.locale = :locale')
                 ->setParameter('locale', $locale)
@@ -37,6 +39,7 @@ public function findAllWithTranslations(?string $locale): array
         }
 
         return $queryBuilder
+            ->createQueryBuilder('o')
             ->getQuery()
             ->getResult()
         ;
diff --git a/src/Repository/ProductVariantRepository.php b/src/Repository/ProductVariantRepository.php
index c050f9bf..bb305806 100644
--- a/src/Repository/ProductVariantRepository.php
+++ b/src/Repository/ProductVariantRepository.php
@@ -26,7 +26,11 @@ public function __construct(
 
     public function findOneByOptionValue(ProductOptionValueInterface $productOptionValue): ?ProductVariantInterface
     {
-        return $this->baseProductVariantRepository->createQueryBuilder('o')
+        /** @var EntityRepository $baseProductVariantRepository */
+        $baseProductVariantRepository = $this->baseProductVariantRepository;
+
+        return $baseProductVariantRepository
+            ->createQueryBuilder('o')
             ->where(':optionValue MEMBER OF o.optionValues')
             ->setParameter('optionValue', $productOptionValue)
             ->getQuery()
@@ -37,7 +41,11 @@ public function findOneByOptionValue(ProductOptionValueInterface $productOptionV
 
     public function findByOptionValue(ProductOptionValueInterface $productOptionValue): array
     {
-        return $this->baseProductVariantRepository->createQueryBuilder('o')
+        /** @var EntityRepository $baseProductVariantRepository */
+        $baseProductVariantRepository = $this->baseProductVariantRepository;
+
+        return $baseProductVariantRepository
+            ->createQueryBuilder('o')
             ->where(':optionValue MEMBER OF o.optionValues')
             ->setParameter('optionValue', $productOptionValue)
             ->getQuery()
diff --git a/src/Repository/TaxonRepository.php b/src/Repository/TaxonRepository.php
index 07de826b..b0208e0c 100644
--- a/src/Repository/TaxonRepository.php
+++ b/src/Repository/TaxonRepository.php
@@ -30,15 +30,21 @@ public function __construct(
 
     public function getTaxonsByAttributeViaProduct(AttributeInterface $attribute): array
     {
-        return $this->baseTaxonRepository
+        /** @var EntityRepository $taxonRepository */
+        $taxonRepository = $this->baseTaxonRepository;
+
+        /** @var EntityRepository $productRepository */
+        $productRepository = $this->productRepository;
+
+        return $taxonRepository
             ->createQueryBuilder('t')
             ->distinct(true)
             ->select('t')
             ->leftJoin($this->productTaxonEntityClass, 'pt', Join::WITH, 'pt.taxon = t.id')
             ->where(
                 'pt.product IN(' .
-                $this
-                    ->productRepository->createQueryBuilder('p')
+                $productRepository
+                    ->createQueryBuilder('p')
                     ->leftJoin($this->productAttributeEntityClass, 'pav', Join::WITH, 'pav.subject = p.id')
                     ->where('pav.attribute = :attribute')
                     ->getQuery()
diff --git a/src/Transformer/Product/ChannelPricingTransformer.php b/src/Transformer/Product/ChannelPricingTransformer.php
index 084da818..682cc2c2 100644
--- a/src/Transformer/Product/ChannelPricingTransformer.php
+++ b/src/Transformer/Product/ChannelPricingTransformer.php
@@ -20,6 +20,7 @@
 use Sylius\Component\Core\Model\ProductVariantInterface;
 use Sylius\Component\Locale\Context\LocaleContextInterface;
 use Sylius\Component\Product\Resolver\ProductVariantResolverInterface;
+use Webmozart\Assert\Assert;
 
 final class ChannelPricingTransformer implements TransformerInterface
 {
@@ -33,7 +34,7 @@ public function __construct(
 
     public function transform(ProductInterface $product): ?string
     {
-        /** @var ChannelInterface|null $channel */
+        /** @var ChannelInterface $channel */
         $channel = $this->channelContext->getChannel();
 
         if (null === $channelBaseCurrency = $channel->getBaseCurrency()) {
@@ -53,6 +54,9 @@ public function transform(ProductInterface $product): ?string
             return null;
         }
 
+        Assert::integer($productVariantPricing->getPrice());
+        Assert::string($channelBaseCurrency->getCode());
+
         return $this->moneyFormatter->format(
             $productVariantPricing->getPrice(),
             $channelBaseCurrency->getCode(),
diff --git a/src/Transformer/Product/ImageTransformer.php b/src/Transformer/Product/ImageTransformer.php
index 2cfdfbe7..2f793dcd 100644
--- a/src/Transformer/Product/ImageTransformer.php
+++ b/src/Transformer/Product/ImageTransformer.php
@@ -39,8 +39,11 @@ public function transform(ProductInterface $product): ?string
         /** @var ImageInterface $productImage */
         $productImage = $productThumbnails->first();
 
-        if ($this->canImageBeFiltered($productImage->getPath())) {
-            return $this->imagineFilter->getUrlOfFilteredImage($productImage->getPath(), self::SYLIUS_THUMBNAIL_FILTER);
+        /** @var string $path */
+        $path = $productImage->getPath();
+
+        if ($this->canImageBeFiltered($path)) {
+            return $this->imagineFilter->getUrlOfFilteredImage($path, self::SYLIUS_THUMBNAIL_FILTER);
         }
 
         return $this->imagesPath . $productImage->getPath();
diff --git a/tests/Application/config/bundles.php b/tests/Application/config/bundles.php
index a39c4ab4..4055d382 100644
--- a/tests/Application/config/bundles.php
+++ b/tests/Application/config/bundles.php
@@ -66,9 +66,8 @@
     BabDev\PagerfantaBundle\BabDevPagerfantaBundle::class => ['all' => true],
 ];
 
-
-if ( defined(SyliusCoreBundle::class.'::VERSION_ID') && SyliusCoreBundle::VERSION_ID >= '11300') {
+if (defined(SyliusCoreBundle::class . '::VERSION_ID') && SyliusCoreBundle::VERSION_ID >= '11300') {
     $bundles[Sylius\Abstraction\StateMachine\SyliusStateMachineAbstractionBundle::class] = ['all' => true];
 }
 
-return $bundles;
\ No newline at end of file
+return $bundles;