Pattern Matching Functionality

Match.js

// Modelled after Ramda's Cond function
// https://ramdajs.com/docs/#cond

const match = <T, U>(
  conditions: [(i: T) => boolean, (i: T) => U][],
  data: T
): U | undefined => {
  return conditions.reduce((result: U | undefined, [predicate, transformer]) => {
    if (result) {
      return result;
    }
    if (predicate(data)) {
      return transformer(data);
    }
    return undefined;
  }, undefined);
};