Summarizer API は、redBus と Miravia が有用なユーザー レビューの要約を作成できるようにします。

//Context to provide a useful summary const promptContext =   'Summarize the following reviews in 30 words or less.' +   'Focus on key positives and negatives, such as comfort, maintenance,' +   'pricing, and cleanliness. Reviews are separated by {end}.' +   'Give the summary in just one paragraph.'; 

// The Summarizer API is available if ('Summarizer' in self) {   try {     const available = await Summarizer.availability();     let summarizer;     if (available === 'unavailable') {       return null;     }     if (available === 'available') {       //model is already available, use immediately       summarizer = await Summarizer.create();     } else {       //trigger model download and wait       summarizer = await Summarizer.create();     }      // Context to provide a useful summary     const promptContext =       'Summarize the following reviews in 30 words or less.' +       'Focus on key positives and negatives, such as comfort, maintenance,' +       'pricing, and cleanliness. Reviews are separated by {end}.' +       'Give the summary in just one paragraph.';      // Retrieve the reviews to be summarized based on user's search query     let reviews = getIndividualBusReviews();     if (reviews) {       const reviewSummary = await summarizer.summarize(reviews, {         context: promptContext       });     }   } catch (e) {     console.error("SUMMARIZER_API_ERROR: ", e);     return null   } } 

// Compatibility check for device with built-in AI export const deviceCheck = async () => {   // Query the browser's AI capabilities   const availability = await Summarizer.availability();    // Case 1: Device doesn't support AI summarization   if (availability === 'unavailable') {     return {       summarizationAvailable: false,       message:         'AI summarization tools are not supported on this device, or the appropriate permissions have not be set.',     };   }    // Case 2: Device supports AI but requires model download   if (availability === 'downloadable') {     // Try to trigger an installation     Summarizer.create();      return {       summarizationAvailable: false,       message: 'Installing in the background. This may take a few minutes...',     };   }    // Case 3: Device supports AI summarization   return {     summarizationAvailable: true,     message: 'Ready for use.',   }; }; 

/**  * Summarizes a list of reviews using Chrome's Built-in AI  * @param {Array<string>} reviewContentList - Array of review texts to summarize  * @returns {Promise<string>} The generated summary text  * @throws {Error} If summarization is not available or fails  */ export const reviewSummarize = async (reviewContentList) => {   // Validate input   if (!Array.isArray(reviewContentList) || !reviewContentList.length) {     throw new Error('Please provide a non-empty array of reviews to summarize');   }    // Check device compatibility   const { summarizationAvailable, message } = await deviceCheck();    if (summarizationAvailable) {     try {       // Configure and create the summarizer with appropriate parameters       const summarizer = await Summarizer.create({         type: 'tl;dr',         length: 'short',         sharedContext:           'Summarize the given user reviews. Maintain a polite and formal tone.',       });        // Generate the summary from the joined review texts       const summary = await summarizer.summarize(reviewContentList.join('. '));        // Return the generated summary       return summary;     } catch (error) {       // Handle any errors during summarization       throw new Error(`Summarization failed: ${error.message}`);     }   } else {     // If summarization is not available, throw an error with the message from deviceCheck     throw new Error(       message ||         'AI summarization tools are not supported on this device or browser.'     );   } };