fix bugs

lib/index.js

@@ -50,6 +50,7 @@ import { SassEngine } from './engines/sass.js';
  * @property {string} layouts
  * @property {{[key: string]: (...args) => unknown}} [nunjucksVariables]
  * @property {{[key: string]: (...args) => unknown}} [nunjucksFilters]
+ * @property {function(string): function(Object.<string, string>[]): Object.<string, string>[]} nunjucksFilters.prepareCrosswalk
  * @property {{[key: string]: (...args) => unknown}} [nunjucksTags]
  * @property {{[key: string]: (...args) => unknown}} [minifyOptions]
  * @property {string} output
@@ -213,15 +214,15 @@ export class Baker extends EventEmitter {
 
     // if an object of custom nunjucks filters was provided, add them now
     if (nunjucksFilters) {
+      if (crosswalkPath && nunjucksFilters.prepareCrosswalk) {
+        throw new Error('crosswalkPath and prepareCrosswalk cannot both be defined in nunjucksFilters');
+      }
+
       // // Use prepareCrosswalk from nunjucksFilters if available, otherwise check for crosswalkPath
-      // if (nunjucksFilters.prepareCrosswalk) {
-      //   this.nunjucks.addCustomFilters(nunjucksFilters);
-      // } else if (crosswalkPath) {
-      //   this.nunjucks.addCustomFilter(
-      //     'prepareCrosswalk',
-      //     this.prepareCrosswalk(crosswalkPath)
-      //   );
-      // }
+      if (crosswalkPath && !nunjucksFilters.prepareCrosswalk) {
+        nunjucksFilters.prepareCrosswalk = this.prepareCrosswalk(crosswalkPath);
+      }
+
       this.nunjucks.addCustomFilters(nunjucksFilters);
     }
 
@@ -483,11 +484,21 @@ export class Baker extends EventEmitter {
     this.emit('bake:end');
   }
 
+  /**
+   * Prepares a function to process crosswalk image paths.
+   * @param {string} crosswalkPath - The base path for crosswalk images.
+   * @returns {Function} A function that maps over data entries to update image paths.
+   */
   prepareCrosswalk(/** @type {string} */ crosswalkPath) {
-    // set absolute path for crosswalk images
+    /**
+     * Processes data entries to set appropriate paths for images.
+     * @param {Object.<string, string>[]} data - Array of objects, each containing image references.
+     * @returns {Object.<string, string>[]} The data with updated image paths.
+     */
     return function setCrosswalkPath(
       /** @type {Object.<string, string>[]} */ data
     ) {
+      /** @type {Object.<string, string>[]} */ data
       return data.map((d) => {
         const relativeStaticPath = this.getStaticPath(
           join(crosswalkPath, d.img)