What is Deno?

Deno is an open source, secure runtime for JavaScript and TypeScript. It is built on the same modern V8 JavaScript engine used in Google Chrome and is designed to be a more secure, reliable, and efficient way to run JavaScript and TypeScript applications.

The most frequently used fields for Deno are:

1. Security: Deno is designed to be secure by default, with no file, network, or environment access, unless explicitly enabled.
2. Reliability: Deno is built on the same modern V8 JavaScript engine used in Google Chrome, making it more reliable and efficient.
3. Modularity: Deno is designed to be modular, allowing developers to easily add and remove features as needed.

In addition to these fields, there are a number of technologies related to Deno. These include the Deno Standard Library, which provides a set of APIs for working with the Deno runtime; the Deno CLI, which provides a command-line interface for running Deno applications; and the Deno Package Manager, which allows developers to install and manage Deno packages. There are also a number of third-party libraries and tools available for Deno, such as the Deno Web Framework and the Deno Testing Framework.