A javascript template literal transforming a csv to a list of json objects.

csv-template-literal.js

// Ramda 0.25.0
import { defaultTo, eqBy, chain, flatten, head, ifElse, join, length, map, of, pipe, split, tail, transpose, trim, zipObj } from 'ramda'

const interleave = pipe(transpose, flatten)
const trimmedValues = separator => pipe(split(separator), map(trim))

const csv = separator => (strings, ...expressions) => {
  const lines = pipe(
    interleave,
    join(''),
    split('\n'),
    map(trimmedValues(separator))
  )([strings, expressions])

  const keys = defaultTo([], head(lines))
  const rest = tail(lines)

  return chain(
    ifElse(eqBy(length, keys), pipe(zipObj(keys), of), () => []),
    rest
  )
}

// Sample usage

const c = csv(',')
const age = 'age'
const paul = 'Paul'
const maryAge = '31'

console.log(
  c`name,${age}
    ${paul},23
    Mary,${maryAge}`
)
// [ { name: 'Paul', age: '23' }, { name: 'Mary', age: '31' } ]