AxisDataSelections

Defined in: packages/stacks/src/composer/selections.ts:27

@axis-tech-co/axis-stacks — composer/selections.ts

Phase 3L1 — the selections contract (design §5). Exports:

AxisSelections — compile-time face of the axis.json selections block
AxisResolvedSelections — post-context-overlay selections (same shape, frozen)
resolveSelections — shape/enum/unknown-key/reserved-apis validation (§5.2) + the feature.<name> context overlay (§5.4)

Pure TypeScript — no CDK imports. The composer (define-axis-app.ts) calls resolveSelections at the top of defineAxisApp with the app’s context getter; tests call it directly with a plain map-backed getter. All failures throw [Axis]-prefixed errors at synth time.

D4: apis is a RESERVED sibling key — v1 rejects it with a versioned message (code, not documentation), so the future multi-API minor lands without a compile break and old readers fail loudly, never silently.

D13: context maps to on/off ONLY. "custom" is unreachable via context — substitution is project state, not a synth experiment. A context key targeting a stack whose mode is "custom" throws; a kind-mismatched API key throws naming the project’s kind.