fix script generating llms.txt (facebook#4799)

Author: Simek

scripts/generate-llms-txt.js

@@ -10,6 +10,29 @@ const DESCRIPTION =
   'React Native is a framework for building native apps using React. It lets you create mobile apps using only JavaScript and React.';
 const URL_PREFIX = 'https://reactnative.dev';
 
+const INPUT_FILE_PATHS = [
+  {
+    name: 'sidebars.ts',
+    docPath: '../docs/',
+    prefix: '/docs',
+  },
+  {
+    name: 'sidebarsArchitecture.ts',
+    docPath: './architecture/',
+    prefix: '/architecture',
+  },
+  {
+    name: 'sidebarsCommunity.ts',
+    docPath: './community/',
+    prefix: '/community',
+  },
+  {
+    name: 'sidebarsContributing.ts',
+    docPath: './contributing/',
+    prefix: '/contributing',
+  },
+];
+
 const SLUG_TO_URL = {
   'architecture-overview': 'overview',
   'architecture-glossary': 'glossary',
@@ -108,15 +131,13 @@ function checkUrl(urlString) {
       resolve({
         url: urlString,
         status: res.statusCode,
-        is404: res.statusCode === 404,
       });
     });
 
     req.on('error', error => {
       resolve({
         url: urlString,
         status: 'Error',
-        is404: false,
         error: error.message,
       });
     });
@@ -126,7 +147,6 @@ function checkUrl(urlString) {
       resolve({
         url: urlString,
         status: 'Timeout',
-        is404: false,
       });
     });
 
@@ -140,11 +160,7 @@ async function processUrls(urls) {
 
   for (const urlToCheck of urls) {
     const result = await checkUrl(urlToCheck);
-    if (
-      result.is404 ||
-      result.status === 'Error' ||
-      result.status === 'Timeout'
-    ) {
+    if (result.status !== 200) {
       unavailableUrls.push({
         url: urlToCheck,
         status: result.status,
@@ -176,18 +192,14 @@ function extractMetadataFromMarkdown(filePath) {
         slug: slugMatch ? slugMatch[1].trim().replace(/^\//, '') : null,
       };
     }
-    // If no frontmatter found, use the filename
-    return {
-      title: filePath.split('/').pop().replace('.md', ''),
-      slug: null,
-    };
   } catch (error) {
     console.error(`Error reading file ${filePath}:`, error);
-    return {
-      title: filePath.split('/').pop().replace('.md', ''),
-      slug: null,
-    };
   }
+  // If no frontmatter found, on an error occurred use the filename
+  return {
+    title: filePath.split('/').pop().replace('.md', ''),
+    slug: null,
+  };
 }
 
 // Function to map special cases for file names that don't match the sidebar
@@ -283,38 +295,15 @@ function generateMarkdown(sidebarConfig, docPath, prefix, unavailableUrls) {
   return markdown.replace(/(#+ .*)\n/g, '\n$1\n').replace(/\n(\n)+/g, '\n\n');
 }
 
-const inputFilePaths = [
-  {
-    name: 'sidebars.ts',
-    docPath: '../docs/',
-    prefix: '/docs',
-  },
-  {
-    name: 'sidebarsArchitecture.ts',
-    docPath: './architecture/',
-    prefix: '/architecture',
-  },
-  {
-    name: 'sidebarsCommunity.ts',
-    docPath: './community/',
-    prefix: '/community',
-  },
-  {
-    name: 'sidebarsContributing.ts',
-    docPath: './contributing/',
-    prefix: '/contributing',
-  },
-];
-
-let output = `# ${TITLE}\n\n`;
-output += `> ${DESCRIPTION}\n\n`;
-output += `This documentation covers all aspects of using React Native, from installation to advanced usage.\n\n`;
-
 async function generateOutput() {
   const results = [];
   const promises = [];
 
-  for (const {name, docPath, prefix} of inputFilePaths) {
+  let output = `# ${TITLE}\n\n`;
+  output += `> ${DESCRIPTION}\n\n`;
+  output += `This documentation covers all aspects of using React Native, from installation to advanced usage.\n\n`;
+
+  for (const {name, docPath, prefix} of INPUT_FILE_PATHS) {
     const sidebarConfig = await convertSidebarConfigToJson(name);
 
     if (sidebarConfig) {
@@ -324,8 +313,10 @@ async function generateOutput() {
         .then(result => {
           if (result.unavailableUrls.length > 0) {
             console.error(
-              'Skipping new pages not existing in production deployment yet:',
-              result.unavailableUrls.map(entry => entry.url)
+              'Skipping new pages not existing in the latest version docs yet:',
+              result.unavailableUrls.map(entry =>
+                entry.url.replace('/docs', '/docs/next')
+              )
             );
           }
           const markdown = generateMarkdown(
@@ -375,7 +366,7 @@ async function generateOutput() {
 }
 
 function isEntryUnavailable(unavailableUrls, docPath) {
-  return !unavailableUrls.find(entry =>
+  return !!unavailableUrls.find(entry =>
     entry.url.endsWith(docPath.substring(1))
   );
 }