whichRamdaFunctionShouldIUse.js

const R = require('ramda')

const args = [2, [1, 2, 3]]
const output = [[1, 2], [3]]

const whichRamdaFunctionShouldIUse = (args, output) => {
  return Object.keys(R).filter((key) => {
    if (typeof R[key] !== 'function') {
      return false
    }

    try {
      return R.equals(
        R[key].apply(null, args),
        output
      )
    } catch (e) {
      return false
    }
  })
}

console.log(
  whichRamdaFunctionShouldIUse(args, output)
)