Title: Name of Book: description (page number)
Example: Programming Flutter: ‘pub get’ command not working (page 15)

I downloaded the sample code, and executed the first example on page 8. Full text output provided:

markjeffery@Mac getting_started_with_vector_search % node name_this_book.js 
(node:23483) [MODULE_TYPELESS_PACKAGE_JSON] Warning: Module type of file:///Users/markjeffery/Downloads/code/getting_started_with_vector_search/name_this_book.js is not specified and it doesn't parse as CommonJS.
Reparsing as ES module because module syntax was detected. This incurs a performance overhead.
To eliminate this warning, add "type": "module" to /Users/markjeffery/package.json.
(Use `node --trace-warnings ...` to show where the warning was created)
[dotenv@17.1.0] injecting env (0) from .env (tip: ⚙️  write to custom object with { processEnv: myObject })
No cached data found. Starting fresh.
Scraping up to 50 book titles from Pragmatic Bookshelf...
  - Fetching page 1
  - Fetching page 2
  - Fetching page 3
  - Fetching page 4
  - Fetching page 5

    Finished scraping. 50 titles captured.
Generating embeddings for all titles...
  (1/50) A Common-Sense Guide to Data Structures and Algorithms in Python, Volume 2: Level Up Your Core Programming Skills
Generating embedding for: "A Common-Sense Guide to Data Structures and Algorithms in Python, Volume 2: Level Up Your Core Programming Skills"
  (2/50) Advanced Hands-on Rust: Level up Your Coding Skills
Generating embedding for: "Advanced Hands-on Rust: Level up Your Coding Skills"
  (3/50) Ash Framework: Create Declarative Elixir Web Apps
Generating embedding for: "Ash Framework: Create Declarative Elixir Web Apps"
  (4/50) Network Programming in Elixir and Erlang: Write High-Performance, Scalable, and Reliable Apps with TCP and UDP
Generating embedding for: "Network Programming in Elixir and Erlang: Write High-Performance, Scalable, and Reliable Apps with TCP and UDP"
  (5/50) Programming Phoenix LiveView: Interactive Elixir Web Programming Without Writing Any JavaScript
Generating embedding for: "Programming Phoenix LiveView: Interactive Elixir Web Programming Without Writing Any JavaScript"
  (6/50) The Healthy Programmer, Second Edition: Refactor Your Fitness, Improve Your Mind
Generating embedding for: "The Healthy Programmer, Second Edition: Refactor Your Fitness, Improve Your Mind"
  (7/50) Kotlin Brain Teasers: Exercise Your Mind
Generating embedding for: "Kotlin Brain Teasers: Exercise Your Mind"
  (8/50) Real-World Kanban, Second Edition: Do Less, Accomplish More with Lean Thinking
Generating embedding for: "Real-World Kanban, Second Edition: Do Less, Accomplish More with Lean Thinking"
  (9/50) Vector Search with JavaScript: Build Intelligent Search Systems with AI
Generating embedding for: "Vector Search with JavaScript: Build Intelligent Search Systems with AI"
  (10/50) Hotwire Native for Rails Developers: Build Native Mobile Apps Using Your Server
Generating embedding for: "Hotwire Native for Rails Developers: Build Native Mobile Apps Using Your Server"
  (11/50) Kotlin Coroutine Confidence: Untangle Your Async, Ship Safety at Speed
Generating embedding for: "Kotlin Coroutine Confidence: Untangle Your Async, Ship Safety at Speed"
  (12/50) More OCaml: Algorithms, Methods & Diversions
Generating embedding for: "More OCaml: Algorithms, Methods & Diversions"
  (13/50) Agile Web Development with Rails 8
Generating embedding for: "Agile Web Development with Rails 8"
  (14/50) simplicity: sustainable, humane, and effective software development
Generating embedding for: "simplicity: sustainable, humane, and effective software development"
  (15/50) Next-Level A/B Testing: Repeatable, Rapid, and Flexible Product Experimentation
Generating embedding for: "Next-Level A/B Testing: Repeatable, Rapid, and Flexible Product Experimentation"
  (16/50) Cruising Along with Java: Modernize and Modularize with the Latest Features
Generating embedding for: "Cruising Along with Java: Modernize and Modularize with the Latest Features"
  (17/50) Elixir Patterns: The essential BEAM handbook for the busy developer
Generating embedding for: "Elixir Patterns: The essential BEAM handbook for the busy developer"
  (18/50) Northwind Elixir Traders: Learn Elixir and database modeling with Ecto and SQLite, all in one project
Generating embedding for: "Northwind Elixir Traders: Learn Elixir and database modeling with Ecto and SQLite, all in one project"
  (19/50) Rails Scales!: Practical Techniques for Performance and Growth
Generating embedding for: "Rails Scales!: Practical Techniques for Performance and Growth"
  (20/50) Become an Effective Software Engineering Manager: How to Be the Leader Your Development Team Needs
Generating embedding for: "Become an Effective Software Engineering Manager: How to Be the Leader Your Development Team Needs"
  (21/50) Clojure Brain Teasers: Exercise Your Mind
Generating embedding for: "Clojure Brain Teasers: Exercise Your Mind"
  (22/50) Creating Great Teams, Second Edition: How Self-Selection Lets People Excel
Generating embedding for: "Creating Great Teams, Second Edition: How Self-Selection Lets People Excel"
  (23/50) Agile Web Development with Rails 7.2
Generating embedding for: "Agile Web Development with Rails 7.2"
  (24/50) C# Brain Teasers: Exercise Your Mind
Generating embedding for: "C# Brain Teasers: Exercise Your Mind"
  (25/50) Guiding Star OKRs: A New Approach to Setting and Achieving Goals
Generating embedding for: "Guiding Star OKRs: A New Approach to Setting and Achieving Goals"
  (26/50) Business Success with Open Source: Strengthen Your Business with Free and Open Source Software
Generating embedding for: "Business Success with Open Source: Strengthen Your Business with Free and Open Source Software"
  (27/50) MySQL 9 Essentials
Generating embedding for: "MySQL 9 Essentials"
  (28/50) tmux 3: Productive Mouse-Free Development
Generating embedding for: "tmux 3: Productive Mouse-Free Development"
  (29/50) Real-World Event Sourcing: Distribute, Evolve, and Scale Your Elixir Applications
Generating embedding for: "Real-World Event Sourcing: Distribute, Evolve, and Scale Your Elixir Applications"
  (30/50) The New and Improved Flask Mega-Tutorial
Generating embedding for: "The New and Improved Flask Mega-Tutorial"
  (31/50) Regular Expressions Machinery: The Illustrated Guide
Generating embedding for: "Regular Expressions Machinery: The Illustrated Guide"
  (32/50) The Art of Functional Programming
Generating embedding for: "The Art of Functional Programming"
  (33/50) Engineering Elixir Applications: Navigate Each Stage of Software Delivery with Confidence
Generating embedding for: "Engineering Elixir Applications: Navigate Each Stage of Software Delivery with Confidence"
  (34/50) Jetpack Compose 1.7 Essentials
Generating embedding for: "Jetpack Compose 1.7 Essentials"
  (35/50) The Case of the Crimson Test Suite: An Introduction to Swift Testing
Generating embedding for: "The Case of the Crimson Test Suite: An Introduction to Swift Testing"
  (36/50) Pragmatic Unit Testing in Java with JUnit, Third Edition
Generating embedding for: "Pragmatic Unit Testing in Java with JUnit, Third Edition"
  (37/50) Serverless Apps on Cloudflare: Build Solutions, Not Infrastructure
Generating embedding for: "Serverless Apps on Cloudflare: Build Solutions, Not Infrastructure"
  (38/50) C# 13 Programming Essentials: .NET 9 Edition
Generating embedding for: "C# 13 Programming Essentials: .NET 9 Edition"
  (39/50) Android Studio Koala Essentials-Kotlin Edition
Generating embedding for: "Android Studio Koala Essentials-Kotlin Edition"
  (40/50) Seven Obscure Languages in Seven Weeks: Rediscovering the Tools That Built the Future
Generating embedding for: "Seven Obscure Languages in Seven Weeks: Rediscovering the Tools That Built the Future"
  (41/50) iOS 18 App Development Essentials
Generating embedding for: "iOS 18 App Development Essentials"
  (42/50) Escape Velocity: Better Metrics for Agile Teams
Generating embedding for: "Escape Velocity: Better Metrics for Agile Teams"
  (43/50) Test-Driven React, Second Edition: Find Problems Early, Fix Them Quickly, Code with Confidence
Generating embedding for: "Test-Driven React, Second Edition: Find Problems Early, Fix Them Quickly, Code with Confidence"
  (44/50) Android Studio Koala Essentials-Java Edition
Generating embedding for: "Android Studio Koala Essentials-Java Edition"
  (45/50) Become a Great Engineering Leader: Build Effective Skills to Lead and Grow
Generating embedding for: "Become a Great Engineering Leader: Build Effective Skills to Lead and Grow"
  (46/50) Machine Learning in Elixir: Learning to Learn with Nx and Axon
Generating embedding for: "Machine Learning in Elixir: Learning to Learn with Nx and Axon"
  (47/50) Automate Your Home Using Go: Build a Personal Data Center with Raspberry Pi, Docker, Prometheus, and Grafana
Generating embedding for: "Automate Your Home Using Go: Build a Personal Data Center with Raspberry Pi, Docker, Prometheus, and Grafana"
  (48/50) Server-Driven Web Apps with htmx: Any Language, Less Code, Simpler Code
Generating embedding for: "Server-Driven Web Apps with htmx: Any Language, Less Code, Simpler Code"
  (49/50) The Stress Equation: Reduce Burnout, Increase Happiness and Productivity
Generating embedding for: "The Stress Equation: Reduce Burnout, Increase Happiness and Productivity"
  (50/50) A Common-Sense Guide to Data Structures and Algorithms in JavaScript, Volume 1: Level Up Your Core Programming Skills
Generating embedding for: "A Common-Sense Guide to Data Structures and Algorithms in JavaScript, Volume 1: Level Up Your Core Programming Skills"
file:///Users/markjeffery/Downloads/code/getting_started_with_vector_search/name_this_book.js:50
  return data.data[0].embedding;
                  ^

TypeError: Cannot read properties of undefined (reading '0')
    at getEmbedding (file:///Users/markjeffery/Downloads/code/getting_started_with_vector_search/name_this_book.js:50:19)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async Promise.all (index 1)
    at async embedTitles (file:///Users/markjeffery/Downloads/code/getting_started_with_vector_search/name_this_book.js:119:3)
    at async main (file:///Users/markjeffery/Downloads/code/getting_started_with_vector_search/name_this_book.js:148:13)

Node.js v23.11.0

It looks like it fails at the last book!

Does this look like an error on my side, or yours?