reusePaths breaks file

[JoKalliauer]

==========Input==========	==========Output==========

Version
https://jakearchibald.github.io/svgomg/

License

source: https://commons.wikimedia.org/wiki/File:Flag-map_of_the_world.svg

author: https://commons.wikimedia.org/wiki/User:Transparent_6lue

license: Public Domain by the author

[SethFalco]

The reusePaths plugin appears to have been named Replace duplicate elements with links in SVGOMG.

I've made a minimal example that allows us to reproduce the issue in SVGOMG and SVGO. The issue still occurs with SVGO v3.0.2.

original.svg

<svg xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="-29.947 60.987 69.975 102.505">
  <g transform="translate(-59 64)">
    <g id="b">
      <path id="a" fill="#000" d="M0 0v1h.5Z" transform="rotate(18 3.157 -.5)"/>
      <use xlink:href="#a" width="1" height="1" transform="scale(-1 1)"/>
    </g>
    <use xlink:href="#b" width="1" height="1" transform="rotate(72)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(-72)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(144)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(-144)"/>
  </g>
  <path id="c" fill="#000" d="M0 0v1h.5Z" transform="rotate(18 3.157 -.5)"/>
  <use xlink:href="#c" width="1" height="1" transform="scale(-1 1)"/>
</svg>

svgo.config.js

module.exports = {
  plugins: [
    'reusePaths'
  ]
};

The result, prettified:

optimized.svg

<svg xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="-29.947 60.987 69.975 102.505">
  <defs>
    <path id="a" fill="#000" d="M0 0v1h.5Z"/>
  </defs>
  <g transform="translate(-59 64)">
    <g id="b">
      <use transform="rotate(18 3.157 -.5)" xlink:href="#a"/>
      <use xlink:href="#a" width="1" height="1" transform="scale(-1 1)"/>
    </g>
    <use xlink:href="#b" width="1" height="1" transform="rotate(72)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(-72)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(144)"/>
    <use xlink:href="#b" width="1" height="1" transform="rotate(-144)"/>
  </g>
  <use id="c" transform="rotate(18 3.157 -.5)" xlink:href="#a"/>
  <use xlink:href="#c" width="1" height="1" transform="scale(-1 1)"/>
</svg>

[JoKalliauer]

Confirm fix