var round = Math.round
var pow = Math.pow
module.exports = function(aValue, multiplier, precision, unit) {
var value = parseInt(aValue, 10) * multiplier
// TODO: precision should be valid or df should invoke callback with `err`
// This is a breaking change to be made after release 0.1.4
var hasPrecision = typeof precision === 'number'
var amount
if (hasPrecision) {
amount = pow(10, precision)
value = round(value * amount) / amount
}
if (unit != null) {
// NOTE: this is to always show decimals even if value is an integer
if (hasPrecision) {
value = value.toFixed(precision)
}
value += unit
}
return value
}
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