Refactor to avoid dynamic module resolution

Author: kgryte

lib/node_modules/@stdlib/buffer/alloc-unsafe/lib/index.js

@@ -15,15 +15,17 @@
 // MODULES //
 
 var hasAllocUnsafe = require( './has_alloc_unsafe.js' );
+var main = require( './main.js' );
+var polyfill = require( './polyfill.js' );
 
 
 // MAIN //
 
 var allocUnsafe;
 if ( hasAllocUnsafe ) {
-	allocUnsafe = require( './main.js' );
+	allocUnsafe = main;
 } else {
-	allocUnsafe = require( './polyfill.js' );
+	allocUnsafe = polyfill;
 }