Parse Microdata or JSON-LD in preview to get published date and modified date

[sounisi5011]

The Netlify preview is like a cache that holds its own past state.
It is more efficient to get the published date and modified date from the deployed preview page itself, rather than a dedicated cache file that is kept or ambiguous.

It is considered common to describe the published date and modified date of pages using Microdata or JSON-LD.
Therefore, I propose the addition of a function to analyze this.

I could find some npm packages that parse Microdata and JSON-LD.

• https://www.npmjs.com/package/web-auto-extractor
• https://www.npmjs.com/package/htmlmetaparser
• https://www.npmjs.com/package/html-metadata
• https://www.npmjs.com/package/page-content
• https://www.npmjs.com/package/scrappy
• https://www.npmjs.com/package/metadata-parser
• https://www.npmjs.com/package/page-content

This attempt should not be impossible.

[sounisi5011]

I could find some npm packages that parse Microdata and JSON-LD.

• https://www.npmjs.com/package/web-auto-extractor
• https://www.npmjs.com/package/htmlmetaparser
• https://www.npmjs.com/package/html-metadata
• https://www.npmjs.com/package/page-content
• https://www.npmjs.com/package/scrappy
• https://www.npmjs.com/package/metadata-parser
• https://www.npmjs.com/package/page-content

Some packages were tools that depended on another package:

• page-content
  Depends on web-auto-extractor package
• scrappy
  Depends on htmlmetaparser package

And these packages were forked:

• metadata-parser
  forked from html-metadata. Older than the original fork

Except for these packages, the remaining candidates are:

• web-auto-extractor
  • 👍 It is adopted in many packages.
  • 👎 The last publish date is two years ago.
  • 👎 There is an old cheerio in dependencies. As with metalsmith-excerpts, there is a risk of encountering security issues.
• htmlmetaparser
  • 👍 TypeScript type definition is included.
  • 👍 There is only one package in a dependency. I do not struggle with maintenance.
  • 👎 The last publish date is one years ago.
• html-metadata
  • 👍 Created by Wikimedia.
  • 👎 The last publish date is two years ago.