Immutable Buffer

Adding types to the Immutable Buffer from the 3rd edition of Node.js Design Patterns.

Background

I saw the original code for this on page 251 (chapter 7) and thought, it would be a fun challenge to implement this in TypeScript, and I was right. Since the example implementation was not completely fleshed out, I had to make a few modifications to the class itself, however, most of the code is the same.

Let it be known that this is not supposed to be an actual utility (let alone production-ready), this is just a TypeScript exercise.

Ideas & Areas of Interest

• Getting the ImmutableBuffer to work with the index access ([]) operator
• More comprehensive tests, especially for the methods that needed to be overridden
• ESLint for fun and to make sure I'm not cheating too much