The process module contains functions for orchestrating a simple series of data transformations.

Use flow to create this orchestration:

const p = flow(
 (value:string) => value.toUpperCase(), // Convert to uppercase
 (value:string) => value.at(0) === 'A') // If first letter is an A, return true
);

Once created, the flow can be invoked with an input value:

p('apple'); // True

Each function in the processing flow takes one input and returns one result. There are a few in-built functions as well. Some of these are stateful, remembering previous values that have been processed (eg seenToUndefined).