feat: respect data-swup-no-preload for preloadHoveredLinks/preloadVisibleLinks

[aleclarson]

Description

Make the preloadVisibleLinks and preloadLinksOnAttention methods check the data-swup-no-preload attribute. If it exists, skip preloading for that link.

Checks

• The PR is submitted to the main branch
• The code was linted before pushing (npm run lint)
• All tests are passing (npm run test)
• New or updated tests are included
• The documentation was updated as required

Additional information

[hirasso]

Hi @aleclarson ,

Thank you for your contribution!

Out of interest: what's your use case for not wanting a page to be preloaded, at all?

Would you mind also creating a section in the readme for the attribute [data-swup-no-preload]?

[aleclarson]

Out of interest: what's your use case for not wanting a page to be preloaded, at all?

They are server-rendered pages that may often be "passed over" with the mouse, but don't get clicked as often, so I'd prefer to avoid hitting the database for them unless needed.

Would you mind also creating a section in the readme for the attribute [data-swup-no-preload]?

Yup will do

[daun]

@aleclarson Looks useful to me! Is there a reason you switched around the order of the checks? If you get around to adding a super short readme section, we'd be happy to merge this.