Merge pull request #2652 from kprajapatii/master

new core function to minimize JS

includes/formatting-functions.php

@@ -737,4 +737,43 @@ function geodir_sanitize_html_class( $string ) {
 	$string = trim( implode( ' ', $string ) );
 
 	return $string;
+}
+
+/**
+ * JavaScript Minifier.
+ *
+ * @since 2.3.71
+ *
+ * @param string $script Input JavaScript.
+ * @return string Minified JavaScript.
+ */
+function geodir_minify_js( $script ) {
+	if ( trim( $script ) === "" ) {
+		return $script;
+	}
+
+	$script = preg_replace(
+		array(
+			// Remove comment(s)
+			'#\s*("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')\s*|\s*\/\*(?!\!|@cc_on)(?>[\s\S]*?\*\/)\s*|\s*(?<![\:\=])\/\/.*(?=[\n\r]|$)|^\s*|\s*$#',
+			// Remove white-space(s) outside the string and regex
+			'#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\'|\/\*(?>.*?\*\/)|\/(?!\/)[^\n\r]*?\/(?=[\s.,;]|[gimuy]|$))|\s*([!%&*\(\)\-=+\[\]\{\}|;:,.<>?\/])\s*#s',
+			// Remove the last semicolon
+			'#;+\}#',
+			// Minify object attribute(s) except JSON attribute(s). From `{'foo':'bar'}` to `{foo:'bar'}`
+			'#([\{,])([\'])(\d+|[a-z_][a-z0-9_]*)\2(?=\:)#i',
+			// --ibid. From `foo['bar']` to `foo.bar`
+			'#([a-z0-9_\)\]])\[([\'"])([a-z_][a-z0-9_]*)\2\]#i'
+		),
+		array(
+			'$1',
+			'$1$2',
+			'}',
+			'$1$3',
+			'$1.$3'
+		),
+		$script
+	);
+
+	return $script;
 }