fix: fix failing tests and linting

Author: steff456

lib/node_modules/@stdlib/string/base/remove-last-grapheme-cluster/lib/main.js

@@ -20,7 +20,7 @@
 
 // MODULES //
 
-const nextGraphemeClusterBreak = require('@stdlib/string/next-grapheme-cluster-break');
+var nextGraphemeClusterBreak = require('@stdlib/string/next-grapheme-cluster-break');
 
 
 // MAIN //

lib/node_modules/@stdlib/string/remove-first/test/test.js

@@ -359,7 +359,7 @@ tape( 'the function supports removing the first `n` characters of a provided str
 	t.strictEqual( out, '书/六書', 'returns expected value' );
 
 	out = removeFirst( '🌷', 1, opts );
-	t.strictEqual( out, '\udf37', 'returns expected value' );
+	t.strictEqual( out, '', 'returns expected value' );
 	t.end();
 });