transformee-rambdee.js

const fs = require("fs");
const {
  cond,
  T,
  equals,
  always,
  omit,
  evolve,
  merge,
  compose,
  identity
} = require("ramda");
const { parsePhoneNumberFromString } = require("libphonenumber-js");

const transform = entry => {
  const transformGender = cond([
    [equals("male"), always("M")],
    [equals("female"), always("F")],
    [T, identity]
  ]);

  const omitAge = omit(["age"]);

  const removeOldPhoneFields = omit(["phone", "cell"]);

  const addNewPhoneFields = merge({
    telephoneNumbers: [parsePhoneNumberFromString(entry.phone, "BR").number],
    mobileNumbers: [parsePhoneNumberFromString(entry.cell, "BR").number]
  });

  const transformGenderAndOmitAge = evolve({
    gender: transformGender,
    dob: omitAge,
    registered: omitAge
  });

  const transformEntry = compose(
    transformGenderAndOmitAge,
    removeOldPhoneFields,
    addNewPhoneFields
  );
  return transformEntry(entry);
};

const inputPath = __dirname + "/input.json";
const json = fs.readFileSync(inputPath, "utf-8");

const { results } = JSON.parse(json);

const normalized = results.map(transform);

console.log(normalized);