WORK-663
ID:WORK-663Status:ready

A composition definition declares defaults for universal axes

A native rune states its chrome defaults in config (defaultWidth, defaultElevation, defaultDensity). A composition has no way to, and hero needs width: full, which a template cannot write because width stays on the root (SPEC-145 D34).

Priority:highComplexity:moderateMilestone:v0.44.0Source:SPEC-145
claude/post-v0.43-roadmap-mf1ngx View source

Criteria completion

Criteria completion: 0 of 7 (0%) checked; tracking started on Oct 26, no incremental history yet0%25%50%75%100%Oct 26Oct 28

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Relationships

Implements 1
Related 9
History 1
  1. 07d27ce
    Created (ready)by bjornolofandersson

Acceptance Criteria

  • A definition's frontmatter accepts defaults, naming universal axes; any other key, or a value the axis does not accept, is rejected at definition load, naming it
  • density is accepted as a default only (full | compact | minimal) and lands as data-density on the carrier
  • A default lands where the author's attribute would, by WORK-662's placements
  • The order author value > template literal > definition default is asserted for one root-placed axis (width) and one carrier-placed axis (elevation)
  • A literal the template writes on the carrier is replaced by the author's value at expansion
  • inspect shows a default's source, and reference documents the definition's defaults
  • The composed-runes guide documents defaults, including that a template cannot pin a universal axis against the author

Approach

Root-placed defaults become the generated config's defaultWidth, defaultSpacing and defaultInset. The rest are written onto their target tag at expansion when neither the author nor a literal set them. The placed rune's schema has to admit density from a template, since it is not an author attribute.

SPEC-177 adds site and theme layers above this one later. Nothing here should assume they exist.

Blocked by

  • WORK-662

References

  • SPEC-145: D34.
  • SPEC-177: D3's precedence, of which this is the definition's layer.
  • ADR-042: compact density as a composition default.