diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 5d4424a..c727d20 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -174,7 +174,7 @@ function config_get_config_directory($type = CONFIG_ACTIVE_DIRECTORY) {
   if (!empty($config_directories[$type])) {
     return $config_directories[$type];
   }
-  throw new \Exception(format_string('The configuration directory type %type does not exist.', array('%type' => $type)));
+  throw new \Exception("The configuration directory type '$type' does not exist");
 }
 
 /**
diff --git a/core/lib/Drupal/Core/Config/InstallStorage.php b/core/lib/Drupal/Core/Config/InstallStorage.php
index f3a3298..5c1d65a 100644
--- a/core/lib/Drupal/Core/Config/InstallStorage.php
+++ b/core/lib/Drupal/Core/Config/InstallStorage.php
@@ -91,9 +91,7 @@ public function getFilePath($name) {
     }
     // If any code in the early installer requests a configuration object that
     // does not exist anywhere as default config, then that must be mistake.
-    throw new StorageException(format_string('Missing configuration file: @name', array(
-      '@name' => $name,
-    )));
+    throw new StorageException("Missing configuration file: $name");
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php b/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
index 98f4f84..e1a976a 100644
--- a/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
+++ b/core/lib/Drupal/Core/Entity/Query/Sql/Tables.php
@@ -215,7 +215,7 @@ public function addField($field, $type, $langcode) {
           $index_prefix .= "$next_index_prefix.";
         }
         else {
-          throw new QueryException(format_string('Invalid specifier @next.', array('@next' => $relationship_specifier)));
+          throw new QueryException("Invalid specifier '$relationship_specifier'");
         }
       }
     }
@@ -247,7 +247,7 @@ protected function ensureEntityTable($index_prefix, $property, $type, $langcode,
         return $this->entityTables[$index_prefix . $table];
       }
     }
-    throw new QueryException(format_string('@property not found', array('@property' => $property)));
+    throw new QueryException("'$property' not found");
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
index 7422669..8a96e51 100644
--- a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php
@@ -1429,7 +1429,7 @@ protected function getSharedTableFieldSchema(FieldStorageDefinitionInterface $st
 
     // Check that the schema does not include forbidden column names.
     if (array_intersect(array_keys($field_schema['columns']), $this->storage->getTableMapping()->getReservedColumns())) {
-      throw new FieldException(format_string('Illegal field column names on @field_name', array('@field_name' => $storage_definition->getName())));
+      throw new FieldException("Illegal field column names on {$storage_definition->getName()}");
     }
 
     $field_name = $storage_definition->getName();
@@ -1651,7 +1651,7 @@ protected function getDedicatedTableSchema(FieldStorageDefinitionInterface $stor
     $properties = $storage_definition->getPropertyDefinitions();
     $table_mapping = $this->storage->getTableMapping();
     if (array_intersect(array_keys($schema['columns']), $table_mapping->getReservedColumns())) {
-      throw new FieldException(format_string('Illegal field column names on @field_name', array('@field_name' => $storage_definition->getName())));
+      throw new FieldException("Illegal field column names on {$storage_definition->getName()}");
     }
 
     // Add field columns.
diff --git a/core/lib/Drupal/Core/Extension/ModuleInstaller.php b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
index 47e0657..41e698c 100644
--- a/core/lib/Drupal/Core/Extension/ModuleInstaller.php
+++ b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
@@ -138,10 +138,7 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
       if (!$enabled) {
         // Throw an exception if the module name is too long.
         if (strlen($module) > DRUPAL_EXTENSION_NAME_MAX_LENGTH) {
-          throw new ExtensionNameLengthException(format_string('Module name %name is over the maximum allowed length of @max characters.', array(
-            '%name' => $module,
-            '@max' => DRUPAL_EXTENSION_NAME_MAX_LENGTH,
-          )));
+          throw new ExtensionNameLengthException("Module name '$module' is over the maximum allowed length of " . DRUPAL_EXTENSION_NAME_MAX_LENGTH . ' characters');
         }
 
         // Check the validity of the default configuration. This will throw
@@ -322,9 +319,7 @@ public function uninstall(array $module_list, $uninstall_dependents = TRUE) {
       foreach ($reasons as $reason) {
         $reason_message[] = implode(', ', $reason);
       }
-      throw new ModuleUninstallValidatorException(format_string('The following reasons prevents the modules from being uninstalled: @reasons', array(
-        '@reasons' => implode('; ', $reason_message),
-      )));
+      throw new ModuleUninstallValidatorException('The following reasons prevents the modules from being uninstalled: ' . implode('; ', $reason_message));
     }
     // Set the actual module weights.
     $module_list = array_map(function ($module) use ($module_data) {
diff --git a/core/lib/Drupal/Core/TypedData/ListDataDefinition.php b/core/lib/Drupal/Core/TypedData/ListDataDefinition.php
index b710a75..e0fd530 100644
--- a/core/lib/Drupal/Core/TypedData/ListDataDefinition.php
+++ b/core/lib/Drupal/Core/TypedData/ListDataDefinition.php
@@ -87,7 +87,7 @@ public function getClass() {
       $item_type_definition = \Drupal::typedDataManager()
         ->getDefinition($this->getItemDefinition()->getDataType());
       if (!$item_type_definition) {
-        throw new \LogicException(format_string('An invalid data type @plugin_id has been specified for list items.', array('@plugin_id' => $this->getItemDefinition()->getDataType())));
+        throw new \LogicException("An invalid data type '{$this->getItemDefinition()->getDataType()}' has been specified for list items");
       }
       return $item_type_definition['list_class'];
     }
diff --git a/core/lib/Drupal/Core/TypedData/TypedDataManager.php b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
index bf41850..858d13d 100644
--- a/core/lib/Drupal/Core/TypedData/TypedDataManager.php
+++ b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
@@ -98,7 +98,7 @@ public function createInstance($data_type, array $configuration = array()) {
     $type_definition = $this->getDefinition($data_type);
 
     if (!isset($type_definition)) {
-      throw new \InvalidArgumentException(format_string('Invalid data type %plugin_id has been given.', array('%plugin_id' => $data_type)));
+      throw new \InvalidArgumentException("Invalid data type '$data_type' has been given");
     }
 
     // Allow per-data definition overrides of the used classes, i.e. take over
@@ -178,7 +178,7 @@ public function create(DataDefinitionInterface $definition, $value = NULL, $name
   public function createDataDefinition($data_type) {
     $type_definition = $this->getDefinition($data_type);
     if (!isset($type_definition)) {
-      throw new \InvalidArgumentException(format_string('Invalid data type %plugin_id has been given.', array('%plugin_id' => $data_type)));
+      throw new \InvalidArgumentException("Invalid data type '$data_type' has been given");
     }
     $class = $type_definition['definition_class'];
     return $class::createFromDataType($data_type);
@@ -198,7 +198,7 @@ public function createDataDefinition($data_type) {
   public function createListDataDefinition($item_type) {
     $type_definition = $this->getDefinition($item_type);
     if (!isset($type_definition)) {
-      throw new \InvalidArgumentException(format_string('Invalid data type %plugin_id has been given.', array('%plugin_id' => $item_type)));
+      throw new \InvalidArgumentException("Invalid data type '$item_type' has been given");
     }
     $class = $type_definition['list_definition_class'];
     return $class::createFromItemType($item_type);
diff --git a/core/modules/locale/src/StringDatabaseStorage.php b/core/modules/locale/src/StringDatabaseStorage.php
index 06f9f97..de62484 100644
--- a/core/modules/locale/src/StringDatabaseStorage.php
+++ b/core/modules/locale/src/StringDatabaseStorage.php
@@ -199,9 +199,7 @@ public function delete($string) {
       }
     }
     else {
-      throw new StringStorageException(format_string('The string cannot be deleted because it lacks some key fields: @string', array(
-        '@string' => $string->getString(),
-      )));
+      throw new StringStorageException('The string cannot be deleted because it lacks some key fields: ' . $string->getString());
     }
     return $this;
   }
@@ -483,9 +481,7 @@ protected function dbStringInsert($string) {
         ->execute();
     }
     else {
-      throw new StringStorageException(format_string('The string cannot be saved: @string', array(
-          '@string' => $string->getString(),
-      )));
+      throw new StringStorageException('The string cannot be saved: ' . $string->getString());
     }
   }
 
@@ -516,9 +512,7 @@ protected function dbStringUpdate($string) {
         ->execute();
     }
     else {
-      throw new StringStorageException(format_string('The string cannot be updated: @string', array(
-          '@string' => $string->getString(),
-      )));
+      throw new StringStorageException('The string cannot be updated: ' . $string->getString());
     }
   }
 
diff --git a/core/modules/simpletest/src/KernelTestBase.php b/core/modules/simpletest/src/KernelTestBase.php
index 481b031..ba8622b 100644
--- a/core/modules/simpletest/src/KernelTestBase.php
+++ b/core/modules/simpletest/src/KernelTestBase.php
@@ -381,9 +381,7 @@ protected function defaultLanguageData() {
   protected function installConfig(array $modules) {
     foreach ($modules as $module) {
       if (!$this->container->get('module_handler')->moduleExists($module)) {
-        throw new \RuntimeException(format_string("'@module' module is not enabled.", array(
-          '@module' => $module,
-        )));
+        throw new \RuntimeException("'$module' module is not enabled");
       }
       \Drupal::service('config.installer')->installDefaultConfig('module', $module);
     }
@@ -411,18 +409,13 @@ protected function installSchema($module, $tables) {
     // behavior and non-reproducible test failures, we only allow the schema of
     // explicitly loaded/enabled modules to be installed.
     if (!$this->container->get('module_handler')->moduleExists($module)) {
-      throw new \RuntimeException(format_string("'@module' module is not enabled.", array(
-        '@module' => $module,
-      )));
+      throw new \RuntimeException("'$module' module is not enabled");
     }
     $tables = (array) $tables;
     foreach ($tables as $table) {
       $schema = drupal_get_module_schema($module, $table);
       if (empty($schema)) {
-        throw new \RuntimeException(format_string("Unknown '@table' table schema in '@module' module.", array(
-          '@module' => $module,
-          '@table' => $table,
-        )));
+        throw new \RuntimeException("Unknown '$table' table schema in '$module' module.");
       }
       $this->container->get('database')->schema()->createTable($table, $schema);
     }
diff --git a/core/modules/views/src/Plugin/views/query/Sql.php b/core/modules/views/src/Plugin/views/query/Sql.php
index a61b850..7ee7316 100644
--- a/core/modules/views/src/Plugin/views/query/Sql.php
+++ b/core/modules/views/src/Plugin/views/query/Sql.php
@@ -1454,7 +1454,7 @@ function execute(ViewExecutable $view) {
           drupal_set_message($e->getMessage(), 'error');
         }
         else {
-          throw new DatabaseExceptionWrapper(format_string('Exception in @label[@view_name]: @message', array('@label' => $view->storage->label(), '@view_name' => $view->storage->id(), '@message' => $e->getMessage())));
+          throw new DatabaseExceptionWrapper("Exception in {$view->storage->label()}[$view->storage->id()]: {$e->getMessage()}");
         }
       }