I tried:

const { createSnapshotSerializer } = require('path-serializer')

const serializer = createSnapshotSerializer({
  features: {
    addDoubleQuotes: false,
    escapeDoubleQuotes: false,
  },
  replacePost: [
    {
      match: /(['"`])(\.\.([\\/]))+([\w-]+\3)+[^\\/]*\1/g,
      mark: sub => 'relative/' + sub.replaceAll('\\', '/'),
    },
  ],
})

module.exports = serializer

Well it works, with <RELATIVE_GETTING_STARTED_NEXT>, but actually I want ../../getting-started/next.

Hey, I add #13 for workaround to this feature

if you wanto serialize relative path by default in path-serializer pipeline, you can add test cases or pr to this repo, there may be some edge cases when using regular expressions for replacement.

you can review #15

What is the source of this regular /(['"])(..([\/]))+([\w-]+\3)+[^\\/]*\1/g` expression, is it sufficiently solid?