@localnerve/gulp-responsive/lib/size.js

small patch for gulp-responsive

export default function size (neededSize, originalSize) {
  if (neededSize === undefined || neededSize === null) {
    return null
  } else if (typeof neededSize === 'string' && neededSize.indexOf('%') > -1) {
    const percentage = parseFloat(neededSize)
    if (isNaN(percentage)) {
      throw new Error(`Wrong percentage size "${neededSize}"`)
    }
    return Math.round(originalSize * percentage * 0.01)
  } else {
    neededSize = parseInt(neededSize)
    if (isNaN(neededSize)) {
      throw new Error(`Wrong size "${neededSize}"`)
    }
    return neededSize
  }
}