feat: remove node dependency

src/converters/helpers.js

@@ -1,27 +1,67 @@
-import * as path from 'node:path'
 import redirects from '@adguard/scriptlets/dist/redirects.json' with { type: 'json' }
 
+function getPathBasename(path) {
+  const lastIndex = path.lastIndexOf('/');
+  if (lastIndex === -1) {
+    return path;
+  }
+  return path.slice(lastIndex + 1);
+}
+
+function getPathDirname(path) {
+  const lastIndex = path.lastIndexOf('/');
+  if (lastIndex === -1) {
+    return '.';
+  }
+  return path.slice(0, lastIndex);
+}
+
+const allowedResourceExtensions = [
+  'html',
+  'js',
+  'css',
+  'mp4',
+  'mp3',
+  'xml',
+  'txt',
+  'json',
+  'png',
+  'gif',
+  'empty',
+];
+
+function getPreferredResource(aliases) {
+  // ignore non-supported files and manually created uBO aliases by AdGuard
+  return aliases.find(alias => {
+    const extension = alias.split('.').pop();
+    return extension !== undefined &&
+      allowedResourceExtensions.includes(extension) &&
+      !alias.startsWith('ubo-') &&
+      !alias.includes('-transparent');
+  });
+}
+
+function getFileExtensionByContentType(contentType) {
+  if (contentType.includes(';')) {
+    contentType = contentType.slice(0, contentType.indexOf(';'));
+  }
+  switch (contentType) {
+    case 'text/html':
+      return '.html';
+    case 'text/css':
+      return '.css';
+    case 'text/plain':
+    case 'application/javascript':
+      return '.js';
+    case 'application/json':
+      return '.json';
+  }
+
+  return '';
+}
+
 export function generateResourcesMapping() {
   const resourcesMapping = new Map();
-  const allowedResourceExtensions = [
-    'html',
-    'js',
-    'css',
-    'mp4',
-    'mp3',
-    'xml',
-    'txt',
-    'json',
-    'empty',
-  ];
-
-  function getPreferredResource(aliases) {
-    // ignore non-supported files and manually created uBO aliases by AdGuard
-    return aliases.find(alias => {
-      const extension = alias.split('.').pop();
-      return allowedResourceExtensions.includes(extension) && !alias.startsWith('ubo-');
-    });
-  }
 
   for (const redirect of redirects) {
     // Skip, in case of AdGuard-only resource
@@ -38,6 +78,7 @@ export function generateResourcesMapping() {
 
     // Register to mapping
     resourcesMapping.set(redirect.title, preferredResourceName);
+    resourcesMapping.set(redirect.title + getFileExtensionByContentType(redirect.contentType), preferredResourceName);
     for (const alias of redirect.aliases) {
       if (alias !== preferredResourceName) {
         resourcesMapping.set(alias, preferredResourceName);
@@ -122,12 +163,12 @@ export function normalizeRule(rule, { resourcesMapping = DEFAULT_RESOURCE_MAPPIN
   }
 
   if (newRule.action && newRule.action.type === 'redirect') {
-    const filename = path.basename(newRule.action.redirect.extensionPath);
+    const filename = getPathBasename(newRule.action.redirect.extensionPath);
     const preferredFilename = resourcesMapping.get(filename);
 
     if (preferredFilename !== undefined) {
       newRule.action.redirect.extensionPath =
-        path.dirname(newRule.action.redirect.extensionPath) + '/' + preferredFilename;
+        getPathDirname(newRule.action.redirect.extensionPath) + '/' + preferredFilename;
     }
   }