In Node.js environments, the majority of side-effects come in the form of IO. This is what Node.js excels at—orchestrating huge volumes of IO operations. This is why it has a stream API that most IO components implement.
In this chapter, we'll look at Immutable.js collections from the perspective of Node.js IO. You'll learn how to do the following:
- Reading and parsing CSV data into Immutable.js collections
- Handling the parsing of lots of input data
- Iterating over collections to write data
- Writing collection values asynchronously to streams
- Chaining streams together and lazily processing Immutable.js sequences
