Fix some js errors, see diff

set sophia_after_dark_enable_top_header always to false, as it would a a bar to the top of the page below the admin bar
also did some general fixing on php :)

assets/js/customizer.js

@@ -6,37 +6,36 @@
  * Contains handlers to make Theme Customizer preview reload changes asynchronously.
  */
 
-( function( $ ) {
+(($) => {
+    const setText = (selector, text) => $(selector).text(text);
 
-	// Site title and description.
-	wp.customize( 'blogname', function( value ) {
-		value.bind( function( to ) {
-			$( '.site-title a' ).text( to );
-		} );
-	} );
-	wp.customize( 'blogdescription', function( value ) {
-		value.bind( function( to ) {
-			$( '.site-description' ).text( to );
-		} );
-	} );
+    const setVisibility = (isVisible, color) => {
+        const titleDesc = $('.site-title, .site-description');
+        const titleLink = $('.site-title a, .site-description');
 
-	// Header text color.
-	wp.customize( 'header_textcolor', function( value ) {
-		value.bind( function( to ) {
-			if ( 'blank' === to ) {
-				$( '.site-title, .site-description' ).css( {
-					'clip': 'rect(1px, 1px, 1px, 1px)',
-					'position': 'absolute'
-				} );
-			} else {
-				$( '.site-title, .site-description' ).css( {
-					'clip': 'auto',
-					'position': 'relative'
-				} );
-				$( '.site-title a, .site-description' ).css( {
-					'color': to
-				} );
-			}
-		} );
-	} );
-} )( jQuery );
+        if (!isVisible) {
+            titleDesc.css({
+                clip: 'rect(1px, 1px, 1px, 1px)',
+                position: 'absolute'
+            });
+        } else {
+            titleDesc.css({
+                clip: 'auto',
+                position: 'relative'
+            });
+            titleLink.css('color', color);
+        }
+    };
+
+    wp.customize('blogname', (value) => {
+        value.bind((to) => setText('.site-title a', to));
+    });
+
+    wp.customize('blogdescription', (value) => {
+        value.bind((to) => setText('.site-description', to));
+    });
+
+    wp.customize('header_textcolor', (value) => {
+        value.bind((to) => setVisibility(to !== 'blank', to));
+    });
+})(jQuery);