Allow optional implementation_url in support data
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This change updates the compat-data schema and docs to allow per-browser optional implementation_url values to be specified in the support data for any browser; detailed description: > An optional changeset URL or commit URL for the change which implemented > the feature in the source code for the associated browser; e.g. a > https://trac.webkit.org/changeset/ URL for a changeset whose subject > line is in the form *"Enable [feature name/description]."* or *"Enable > [feature name/description] by default."*. The presence of an > `implementation_url` value indicates that the associated browser has > spec-conformant support for the feature in its source code. Therefore, > an `implementation_url` value can be added even if the feature hasn't > yet shipped in a stable release, but instead only in a Nightly, Canary, > or Technology Preview release — or even if the feature hasn't yet > shipped in any release at all, but has only landed in the source code > for the associated browser. mdn#6896 (comment) and mdn#6896 (comment) are where the idea for this change arose. In summary, the rationale is to have a record in BCD of what changeset landed support for a feature in a particular browser’s codebase. Among other use cases, we have downstream consumers who care only whether or not there’s an implementation of the feature in a particular browser engine — even if that implementation hasn’t yet actually shipped in a major release.
This change updates the compat-data schema docs to provide guidance that implementation_url values will be https://trac.webkit.org/changeset/, https://hg.mozilla.org/mozilla-central/rev/, or https://crrev.com/ URLs. The change also updates the schema itself to constrain the allowed value to a pattern that matches URLs in one of those forms.
Co-authored-by: Daniel D. Beck <daniel@ddbeck.com>
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May 25, 2022
schemas/compat-data.schema.json
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| @@ -63,6 +63,24 @@ | |||
| "required": ["type", "name"] | |||
| } | |||
| }, | |||
| "implementation_url": { | |||
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To safe space and to be consistent with spec_url, I would suggest a shorter name like implement_url or impl_url.
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This PR supersedes #7396 and fixes #126. This PR updates the schema to allow an
implementation_urlproperty, which contains a link to a commit/changeset or a bug for that browser.