`author` is not recognized for YouTube

[eugeny-dementev]

Prerequisites

• [x] I'm using the last version.
• [x] My node version is the same as declared as package.json.

Subject of the issue

author property is null even though it's present in json-ld

Steps to reproduce

I'm using these set of rules for extracting metadata

const metascraper = require('metascraper')([
  require('metascraper-author')(),
  require('metascraper-date')(),
  require('metascraper-description')(),
  require('metascraper-publisher')(),
  require('metascraper-title')(),
  require('metascraper-url')()
])

For all websites I've checked (not that many though) it works and author is extracted. But for YouTube in particular it's empty

If to check meta on the page in DevTools. It's present

JSON.parse(document.querySelectorAll('script[type="application/ld+json"]')[0].innerHTML)

Sometimes in

JSON.parse(document.querySelectorAll('script[type="application/ld+json"]')[1].innerHTML)

But always with author property being the channel of the video

{
    "@context": "https://schema.org",
    "@type": "VideoObject",
    "author": "NEVER TOO SMALL",
    "name": "NEVER TOO SMALL: Movie Director’s Micro Loft Apartment, Philippines 24sqm/258sqft",
    "description": "Grab a copy of our second book at ...",
    "duration": "PT488S",
    "embedUrl": "https://www.youtube.com/embed/ldb4kCDkRY4?start=98"
}

Expected behaviour

author property extracted from json-ld schema

Actual behaviour

author property is null

[eugeny-dementev]

Figured that for YouTube there is a a separate rule because of it's specifics https://www.npmjs.com/package/metascraper-youtube