The [URL standard](https://url.spec.whatwg.org/#concept-url-parser) doesn't seem to reference RFC 2397 nor requires a valid data URI.
Bug 1579331 Comment 4 Edit History
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The [URL standard](https://url.spec.whatwg.org/#concept-url-parser) doesn't seem to reference RFC 2397 nor require a valid data URI.
The [URL standard](https://url.spec.whatwg.org/#concept-url-parser) doesn't seem to reference RFC 2397 nor require a valid data URI. Edit: There are several relevant WPT test failures https://searchfox.org/mozilla-central/rev/2c0a60b5b065ae0fdfcfae168141e82b834fb2d4/testing/web-platform/meta/url/url-constructor.html.ini