Nearest city

nearest-city.js

#!/usr/bin/env node
const stdin = require('/usr/local/lib/node_modules/get-stdin')
const { parseDms } = require('/usr/local/lib/node_modules/dms-conversion')
const nearbyCities = require('/usr/local/lib/node_modules/aynik-nearby-cities')

const { NEAREST_CITY_DEBUG } = process.env

const getNearestCity = (latitude, longitude) => (
  ((data) => (
    NEAREST_CITY_DEBUG
      ? JSON.stringify(data, null, 4)
      : `${data.name}, ${data.country}`
  ))(nearbyCities({ latitude, longitude })[0])
)

stdin().then((str) => process.stdout.write(getNearestCity.apply(null, str.split(',').map(parseDms))))