feat(javascript): report observed export property presence (#1160)

* feat(javascript): report observed export property presence

Extend compare_javascript_export_shapes so each retained return variant
lists observed property names and each change reports presence independently
of value resolution. Complete parent coverage classifies one-sided names as
added or removed even when static values stay unknown.

Fixes #725

* test(javascript): match unknown export-shape values by availability

Nested availability objects include a reason when values stay unresolved.
Assert availability through objectContaining so presence-only added and
removed rows still verify unknown values.

* fix(javascript): preserve uncertain export property presence and locations

* fix(javascript): normalize presence and preserve local property coverage

* fix(javascript): require present discriminants for return pairing

* fix(javascript): normalize retained shapes before comparison

* refactor(javascript): share return projection with executable examples

* fix(javascript): localize uncertainty for missing mutated slots

* fix(javascript): bind advertised export examples to exact artifacts

* fix(javascript): keep uncertain property flow as candidates

---------

Co-authored-by: morluto <76467478+morluto@users.noreply.github.com>
This commit is contained in:
Matt Van Hornandmorluto authored and GitHub committed 2026-10-09 18:30:31 +08:00
1 parent 04aef6df33
commit 45e3edc17f
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+1552 -113

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@@ -102,15 +102,7 @@ export const SOURCE_TO_BUNDLE_COMPARISON_EXAMPLE = {
application: JAVASCRIPT_APPLICATION_EVIDENCE_EXAMPLE,
};
/** Exact static return-shape comparison with both Evidence records inline. */
export const JAVASCRIPT_EXPORT_SHAPE_COMPARISON_EXAMPLE = {
left: JAVASCRIPT_APPLICATION_EVIDENCE_EXAMPLE,
right: reconciliationEvidence,
left_module_path: "parser.mjs",
left_export_name: "default",
right_module_path: "parser.mjs",
right_export_name: "default",
};
export { JAVASCRIPT_EXPORT_SHAPE_COMPARISON_EXAMPLE } from "./javascriptExportShapeComparisonExample.js";
/** Full-Evidence compatibility fixture used by pure domain and adapter tests. */
export const JAVASCRIPT_FEATURE_TRACE_FULL_EVIDENCE_EXAMPLE = {