fix: resolve unrecognized keywords bug in the REPL's syntax-highlighter

PR-URL: #2284

Signed-off-by: Snehil Shah <snehilshah.989@gmail.com>
Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: Snehil-Shah

lib/node_modules/@stdlib/repl/lib/tokenizer.js

@@ -122,7 +122,7 @@ function tokenizer( line, context ) {
 			tokens.push( token );
 			return;
 		}
-		if ( token.type.keyword ) {
+		if ( token.type.keyword || ( token.type.label === 'name' && isUnrecognizedKeyword( token.value ) ) ) {
 			// Keywords - `function`, `import`, `var`, `const`, `let` etc.:
 			token.type = 'keyword';
 			tokens.push( token );
@@ -197,6 +197,10 @@ function tokenizer( line, context ) {
 		if ( node.start === node.end ) {
 			return true;
 		}
+		// Ignore node if it is an unrecognized `keyword`:
+		if ( isUnrecognizedKeyword( node.name ) ) {
+			return true;
+		}
 		// If node is an unrecognized `literal`, push it as a token:
 		if ( node.name === 'undefined' ) {
 			tokens.push({
@@ -207,16 +211,6 @@ function tokenizer( line, context ) {
 			});
 			return true;
 		}
-		// If node is an unrecognized `keyword`, push it as a token:
-		if ( isUnrecognizedKeyword( node.name ) ) {
-			tokens.push({
-				'value': node.name,
-				'type': 'keyword',
-				'start': node.start,
-				'end': node.end
-			});
-			return true;
-		}
 		// If identifier is defined in the local scope, assume and treat it like a `variable` and push it as a token...
 		if ( contains( resolveLocalScope( ast, node ), node.name ) ) {
 			tokens.push({