fix: Prevent parser indexer not letting other addon errors to throw

src/indexer/index.ts

@@ -9,6 +9,7 @@ import {
 } from '#utils/error/parser/extract/svelte';
 import { LegacyTemplateNotEnabledError } from '#utils/error/legacy-api/index';
 import { NoDestructuredDefineMetaCallError } from '#utils/error/parser/analyse/define-meta';
+import { isStorybookSvelteCSFError } from '#utils/error';
 
 export const createIndexer = (legacyTemplate: boolean): Indexer => ({
   test: /\.svelte$/,
@@ -39,6 +40,11 @@ export const createIndexer = (legacyTemplate: boolean): Indexer => ({
         throw new LegacyTemplateNotEnabledError(filename);
       }
 
+      // WARN: We can't use instance of `StorybookSvelteCSFError`, because is an _abstract_ class :sob:
+      if (isStorybookSvelteCSFError(error)) {
+        throw error;
+      }
+
       throw new IndexerParseError();
     }
   },

src/utils/error.ts

@@ -10,6 +10,7 @@ import type { SvelteAST } from '#parser/ast';
  * and modified for this addon needs.
  */
 export abstract class StorybookSvelteCSFError extends Error {
+  public static isStorybookCSFSvelteError = true;
   public static packageName = pkg.name;
   public static packageVersion = pkg.version;
 
@@ -80,7 +81,7 @@ export abstract class StorybookSvelteCSFError extends Error {
    * Generates the error message along with additional documentation link (if applicable).
    */
   get message() {
-    if(this.customMessage) {
+    if (this.customMessage) {
       return this.customMessage;
     }
 
@@ -178,3 +179,11 @@ export abstract class StorybookSvelteCSFError extends Error {
     return `<Story name="${this.storyNameFromAttribute}" />`;
   }
 }
+
+// WARN: We can't use `instanceof StorybookSvelteCSFError`, because is an _abstract_ class
+export function isStorybookSvelteCSFError(error: unknown): error is StorybookSvelteCSFError {
+  return Boolean(
+    (Object.getPrototypeOf(error)?.constructor as typeof StorybookSvelteCSFError)
+      ?.isStorybookCSFSvelteError
+  );
+}