fixup!

Author: avivkeller

packages/rehype-shiki/package.json

@@ -33,4 +33,4 @@
   "devDependencies": {
     "cross-env": "catalog:"
   }
-}
+}

packages/rehype-shiki/src/highlighter.mjs

@@ -9,12 +9,14 @@ const DEFAULT_THEME = {
   ...shikiNordTheme,
 };
 
-export const getLanguageByName = (language, langs) =>
-  langs.find(
+export const getLanguageByName = (language, langs) => {
+  const normalized = language.toLowerCase();
+
+  return langs.find(
     ({ name, aliases }) =>
-      name.toLowerCase() === language.toLowerCase() ||
-      (aliases !== undefined && aliases.includes(language.toLowerCase()))
+      name.toLowerCase() === normalized || aliases?.includes(normalized)
   );
+};
 
 /**
  * Factory function to create a syntax highlighter instance with utility methods.

packages/rehype-shiki/src/index.mjs

@@ -18,8 +18,9 @@ import createHighlighter, { getLanguageByName } from './highlighter.mjs';
 
 /**
  * @typedef {Object} HighlighterOptions
- * @property {boolean|Object} [wasm=false] - WebAssembly options for the regex engine
- * @property {boolean|import('@shikijs/twoslash').TransformerTwoslashIndexOptions} [twoslash=false] - Twoslash configuration options
+ * @property {boolean} [wasm=false] - Enable WebAssembly for the regex engine
+ * @property {boolean} [twoslash=false] - Enable twoslash
+ * @property {import('@shikijs/twoslash').TransformerTwoslashIndexOptions} [twoslashOptions] - Twoslash configuration options
  * @param {import('@shikijs/core').HighlighterCoreOptions} [coreOptions] - Core options for the highlighter.
  * @param {import('@shikijs/core').CodeToHastOptions} [highlighterOptions] - Additional options for highlighting.
  */
@@ -31,9 +32,7 @@ import createHighlighter, { getLanguageByName } from './highlighter.mjs';
 async function getEngine({ wasm = false }) {
   if (wasm) {
     const { createOnigurumaEngine } = await import('@shikijs/engine-oniguruma');
-    return createOnigurumaEngine(
-      typeof wasm === 'boolean' ? await import('shiki/wasm') : wasm
-    );
+    return createOnigurumaEngine(await import('shiki/wasm'));
   }
 
   const { createJavaScriptRegexEngine } = await import(
@@ -46,12 +45,12 @@ async function getEngine({ wasm = false }) {
  * Configures and returns transformers based on options
  * @param {HighlighterOptions} options - Configuration options
  */
-async function getTransformers({ twoslash: options = false }) {
+async function getTransformers({ twoslash = false, twoslashOptions }) {
   const transformers = [];
 
-  if (options) {
+  if (twoslash) {
     const { twoslash } = await import('./transformers/twoslash/index.mjs');
-    transformers.push(twoslash(options));
+    transformers.push(twoslash(twoslashOptions));
   }
 
   return transformers;

packages/rehype-shiki/src/transformers/twoslash/index.mjs

@@ -10,7 +10,7 @@ const compose = ({ token, cursor, popup }) => [
   popup,
 ];
 
-export const twoslash = options =>
+export const twoslash = (options = {}) =>
   transformerTwoslash({
     langs: ['ts', 'js', 'cjs', 'mjs'],
     rendererRich: {
@@ -44,5 +44,5 @@ export const twoslash = options =>
       },
     },
     throws: false,
-    ...(typeof options === 'object' ? options : {}),
+    ...options,
   });