[FEAT] Canonical URL Service

[damienwebdev]

💡 Feature request

Feature Name

Canonical URL Service

The Desired Behavior

I want to be able to upsert and remove a canonical URL for a document.

Your Use Case

As a developer, I have to be able to change the canonical URL of a document easily. Currently, with Angular v12, there's no "nice" way to do this.

Prior Work

Web.dev has a nice article here -- https://web.dev/canonical/

Additionally, Lighthouse has an audit that validates canonicals too.

Possible Implementation

I think this warrants a new package called @daffodil/seo as that is the chief purpose of this feature.

export interface DaffCanonicalService {
  upsert(url :string): void;
  remove(): void;
}

Environment

Daffodil version: 0.36.1
Angular version: 12.0.0

[griest024]

So we should handle the edge case where a canonical link tag already exists in the page?

[damienwebdev]

I think so yes.