refactor: add strict typing

src/admin/class-admin.php

@@ -115,12 +115,12 @@ class Admin {
 			array(),
 			( PRODUCTION_ENV ) ? $this->version : filemtime(
 				plugin_dir_path(
-					 __FILE__ 
+					__FILE__
 				) . 'css/settings.css'
 			),
 			'all'
 		);
-		
+
 	}
 
 	/**
@@ -136,7 +136,7 @@ class Admin {
 			array(),
 			( PRODUCTION_ENV ) ? $this->version : filemtime(
 				plugin_dir_path(
-					__FILE__ 
+					__FILE__
 				) . 'js/wysiwyg-editor.js'
 			),
 			false

src/admin/class-wysiwyg.php

@@ -12,7 +12,7 @@
  * @since  2.8.0  Rename file from `wysiwyg.php` to `class-footnotes-wysiwyg.php`,
  *                              move from `class/` sub-directory to `admin/`.
  */
- 
+
 declare(strict_types=1);
 
 namespace footnotes\admin;

src/admin/layout/class-engine.php

@@ -583,7 +583,7 @@ abstract class Engine {
 	 * @since  1.5.0
 	 * @todo  Refactor HTML generation.
 	 */
-	protected function add_num_box( string  $p_str_setting_name, int $p_in_min, int $p_int_max, bool $p_bool_deci = false ): string {
+	protected function add_num_box( string $p_str_setting_name, int $p_in_min, int $p_int_max, bool $p_bool_deci = false ): string {
 		// Collect data for given settings field.
 		$l_arr_data = $this->load_setting( $p_str_setting_name );
 

src/admin/layout/class-settings.php

@@ -1231,8 +1231,8 @@ class Settings extends Engine {
 	 * @todo Review in light of admin/public split.
 	 */
 	public function help(): void {
-	  $footnotes = new General\General($this->plugin_name, "foo");
-		
+		$footnotes = new General\General( $this->plugin_name, 'foo' );
+
 		// Load footnotes starting and end tag.
 		$l_arr_footnote_starting_tag = $this->load_setting( \footnotes\includes\Settings::C_STR_FOOTNOTES_SHORT_CODE_START );
 		$l_arr_footnote_ending_tag   = $this->load_setting( \footnotes\includes\Settings::C_STR_FOOTNOTES_SHORT_CODE_END );