Refactor to avoid immediate require invocation

Author: kgryte

lib/node_modules/@stdlib/assert/is-boolean/lib/object.js

@@ -20,11 +20,16 @@
 
 // MODULES //
 
-var hasToStringTag = require( '@stdlib/utils/detect-tostringtag-support' )();
+var hasToStringTag = require( '@stdlib/utils/detect-tostringtag-support' );
 var nativeClass = require( '@stdlib/utils/native-class' );
 var test = require( './try2serialize.js' );
 
 
+// VARIABLES //
+
+var FLG = hasToStringTag();
+
+
 // MAIN //
 
 /**
@@ -46,7 +51,7 @@ function isBoolean( value ) {
 		if ( value instanceof Boolean ) {
 			return true;
 		}
-		if ( hasToStringTag ) {
+		if ( FLG ) {
 			return test( value );
 		}
 		return ( nativeClass( value ) === '[object Boolean]' );