Rename file and avoid immediately invoked require

Author: kgryte

lib/node_modules/@stdlib/assert/is-date-object/lib/index.js

@@ -35,7 +35,7 @@
 
 // MODULES //
 
-var isDateObject = require( './is_date_object.js' );
+var isDateObject = require( './main.js' );
 
 
 // EXPORTS //

lib/node_modules/@stdlib/assert/is-date-object/lib/is_date_object.js renamed to lib/node_modules/@stdlib/assert/is-date-object/lib/main.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( './try2getday.js' );
 
 
+// VARIABLES //
+
+var FLG = hasToStringTag();
+
+
 // MAIN //
 
 /**
@@ -43,7 +48,7 @@ var test = require( './try2getday.js' );
 */
 function isDateObject( value ) {
 	if ( typeof value === 'object' ) {
-		if ( hasToStringTag ) {
+		if ( FLG ) {
 			return test( value );
 		}
 		return ( nativeClass( value ) === '[object Date]' );

lib/node_modules/@stdlib/assert/is-date-object/test/test.js

@@ -53,7 +53,7 @@ tape( 'if `Symbol.toStringTag` is supported, the function guards against objects
 	var isDateObject;
 	var mock;
 
-	isDateObject = proxyquire( './../lib/is_date_object.js', {
+	isDateObject = proxyquire( './../lib/main.js', {
 		'@stdlib/utils/detect-tostringtag-support': detect
 	});
 
@@ -80,7 +80,7 @@ tape( 'if `Symbol.toStringTag` is supported, the function guards against objects
 });
 
 tape( 'if `Symbol.toStringTag` is supported, the function returns `true` if provided a `Date` object', opts, function test( t ) {
-	var isDateObject = proxyquire( './../lib/is_date_object.js', {
+	var isDateObject = proxyquire( './../lib/main.js', {
 		'@stdlib/utils/detect-tostringtag-support': detect
 	});
 
@@ -94,7 +94,7 @@ tape( 'if `Symbol.toStringTag` is supported, the function returns `true` if prov
 });
 
 tape( 'if `Symbol.toStringTag` is not supported, the function attempts to determine the native class', function test( t ) {
-	var isDateObject = proxyquire( './../lib/is_date_object.js', {
+	var isDateObject = proxyquire( './../lib/main.js', {
 		'@stdlib/utils/detect-tostringtag-support': detect
 	});
 
@@ -119,7 +119,7 @@ tape( 'the function returns `false` if not provided a `Date` object', function t
 		NaN,
 		null,
 		true,
-		undefined,
+		void 0,
 		[],
 		{},
 		/./,