fix: fix instance options sent to lexer and parser (#3073)

Author: UziTech

src/Instance.ts

@@ -24,11 +24,9 @@ export class Marked {
   parseInline = this.#parseMarkdown(_Lexer.lexInline, _Parser.parseInline);
 
   Parser = _Parser;
-  parser = _Parser.parse;
   Renderer = _Renderer;
   TextRenderer = _TextRenderer;
   Lexer = _Lexer;
-  lexer = _Lexer.lex;
   Tokenizer = _Tokenizer;
   Hooks = _Hooks;
 
@@ -232,6 +230,14 @@ export class Marked {
     return this;
   }
 
+  lexer(src: string, options?: MarkedOptions) {
+    return _Lexer.lex(src, options ?? this.defaults);
+  }
+
+  parser(tokens: Token[], options?: MarkedOptions) {
+    return _Parser.parse(tokens, options ?? this.defaults);
+  }
+
   #parseMarkdown(lexer: (src: string, options?: MarkedOptions) => TokensList | Token[], parser: (tokens: Token[], options?: MarkedOptions) => string) {
     return (src: string, options?: MarkedOptions | undefined | null): string | Promise<string> => {
       const origOpt = { ...options };

test/unit/instance-spec.js

@@ -72,4 +72,19 @@ describe('Marked', () => {
     expect(marked2.parse('# header')).toBe('im marked2');
     expect(marked.parse('# header')).toBe('<h1>header</h1>\n');
   });
+
+  it('should pass defaults to lexer and parser', () => {
+    const marked1 = new Marked();
+    marked1.use({
+      renderer: {
+        heading() {
+          return 'test';
+        }
+      }
+    });
+    const tokens = marked1.lexer('# hi');
+    const html = marked1.parser(tokens);
+
+    expect(html).toBe('test');
+  });
 });