The semantic rules and author lints of a manifest, for input that already
has the schema's shape. The legacy language alias is normalized first,
as validateManifest does. Returns { valid, errors, warnings }
exactly as validateManifest does for a structurally valid manifest.
The semantic rules and author lints of a manifest, for input that already has the schema's shape. The legacy
languagealias is normalized first, asvalidateManifestdoes. Returns{ valid, errors, warnings }exactly asvalidateManifestdoes for a structurally valid manifest.