Deno is a modern JavaScript runtime designed to natively support TypeScript and address some of the shortcomings of Node.js, as conceived by its creator, Ryan Dahl. The text outlines the process undertaken by EdgeDB to adapt their Node.js client library to be compatible with Deno, thereby eliminating the need for maintaining separate codebases. This adaptation leverages a "runtime adapter" pattern to bridge differences between the two environments, such as TypeScript execution, module resolution, and standard library usage. The conversion process involves rewriting import paths to align with Deno's URL-based module system and replacing Node.js standard library imports with their Deno equivalents. Furthermore, a codemod script is developed to automate these changes and handle Node.js global variables, facilitating seamless integration of the library with Deno. The process is automated within a continuous integration workflow to maintain a Deno-compatible version of the library, which is released to a separate repository.