👇 @rollup/plugin-image 图片转为 base64

export default function image(opts = {}) {
  const options = Object.assign({}, defaults, opts)
  const filter = createFilter(options.include, options.exclude)

  return {
    name: 'image',

    load(id) {
      if (!filter(id)) {
        return null
      }

      const mime = mimeTypes[extname(id)]
      if (!mime) {
        // not an image
        return null
      }

      const isSvg = mime === mimeTypes['.svg']
      const format = isSvg ? 'utf-8' : 'base64'
      const source = readFileSync(id, format).replace(/[\r\n]+/gm, '')
      const dataUri = getDataUri({ format, isSvg, mime, source })
      const code = options.dom
        ? domTemplate({ dataUri })
        : constTemplate({ dataUri })

      return code.trim()
    }
  }
}