Safe Number

safe-number.js

import R from 'ramda';

const safeNumber =
  R.when(
    R.test(/^(?!\s*$)-?(0|[1-9]\d*)?(\.\d+)?$/),
    Number
  );

safe-value.js

import R from 'ramda';
import safeNumber from './safe-number';

const safeValue =
  R.compose(
    R.cond([
      [R.equals(0), R.always(0)],
      [R.equals(false), R.always(false)],
      [R.isNil, R.always(undefined)],
      [R.T, R.identity],
    ]),
    safeNumber
  );