Ignore /vercel/image images + better message on _jampack

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@divriots/jampack",
-  "version": "0.24.3",
+  "version": "0.24.4",
   "cache-version": {
     "img": "v1",
     "img-ext": "v1"

src/config-default.ts

@@ -19,6 +19,8 @@ const default_options: Options = {
     srcset_min_width: 390 * 2, // HiDPI phone
     srcset_max_width: 1920 * 2, // 4K
     max_width: 99999,
+    src_include: /^.*$/,
+    src_exclude: /^\/vercel\/image\?/, // Ignore /vervel/image? URLs because not local and most likely already optimized,
     external: {
       process: 'off',
       src_include: /^.*$/,

src/config-types.ts

@@ -32,6 +32,8 @@ export type Options = {
     srcset_min_width: number; // Minimum width of generate image in srcset
     srcset_max_width: number; // Maximum width of generate image in srcset
     max_width: number; // Maximum width of original images - if bigger => resized output
+    src_include: RegExp;
+    src_exclude: RegExp | null;
     external: {
       process:
         | 'off' // Default

src/index.ts

@@ -75,7 +75,9 @@ program
     try {
       mkdirSync(join(dir, '_jampack'));
     } catch (e) {
-      console.error('Failed to create `_jampack` folder.');
+      console.error(
+        'Folder `_jampack` is present in target folder. This means that jampack has already processed this folder. You should always run jampack on clean build of the static website.'
+      );
       exit(1);
     }
 

src/optimize.ts

@@ -260,6 +260,7 @@ async function processImage(
    * Attribute 'src'
    */
   let attrib_src = img.attr('src');
+
   if (!attrib_src) {
     const attrib_data_src = img.attr('data-src');
     if (attrib_data_src) {
@@ -276,6 +277,13 @@ async function processImage(
     return;
   }
 
+  if (
+    !isIncluded(attrib_src, config.image.src_include, config.image.src_exclude)
+  ) {
+    // Setup to ignore
+    return;
+  }
+
   /*
    * Attribute 'alt'
    */