support crosswalk absolute path

bin/bake.js

@@ -34,6 +34,7 @@ const defaultConfig = {
   output: '_dist',
   pathPrefix: '/',
   staticRoot: '',
+  crosswalkPath: undefined,
 };
 
 function getDefaultFromConfig(module) {
@@ -94,6 +95,7 @@ async function prepareConfig(inputOptions) {
   options.pathPrefix = resolver('pathPrefix');
   options.staticRoot = resolver('staticRoot');
   options.svelteCompilerOptions = resolver('svelteCompilerOptions');
+  options.crosswalkPath = resolver('crosswalkPath');
 
   return options;
 }

lib/index.js

@@ -50,6 +50,7 @@ import { SassEngine } from './engines/sass.js';
  * @property {string} output
  * @property {string} pathPrefix
  * @property {string} staticRoot
+ * @property {string} [crosswalkPath]
  * @property {import('svelte/types/compiler/interfaces').CompileOptions} [svelteCompilerOptions]
  */
 
@@ -72,6 +73,7 @@ export class Baker extends EventEmitter {
     output,
     pathPrefix,
     staticRoot,
+    crosswalkPath,
     svelteCompilerOptions,
   }) {
     super();
@@ -206,7 +208,12 @@ export class Baker extends EventEmitter {
 
     // if an object of custom nunjucks filters was provided, add them now
     if (nunjucksFilters) {
-      this.nunjucks.addCustomFilters(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 an object of custom nunjucks tags was provided, add them now
@@ -466,4 +473,25 @@ export class Baker extends EventEmitter {
     // emit event that a bake has completed
     this.emit('bake:end');
   }
+
+  prepareCrosswalk(
+    /** @type {string} */ path
+  ) {
+    return function(
+      /** @type {Object.<string, string>[]} */ data
+    ) {
+      return data.map((d) => {
+        if (d.img) {
+          return {
+            ...d,
+            img: join(
+              process.env.BAKER_URL ?? '',
+              this.getStaticPath(join(path, d.img))
+            ),
+          };
+        }
+        return { ...d };
+      });
+    }
+  }
 }