feat: treat omitted additionalProperties as closed (#154) * feat: treat omitted additionalProperties as closed Named objects no longer pick up extra keys unless the spec says so. Opt into OpenAPI's open-object default with openapi.additionalPropertiesDefault. Co-authored-by: Cursor * fix: emit hasOwnProperty.call instead of Object.hasOwn Generated clients are typechecked with lib ES2021, which does not include Object.hasOwn. Co-authored-by: Cursor * fix: compose ArkType closed objects through allOf `.narrow()` made each closed object a morph, so docker HostConfig (Resources.and(...)) threw at import. Native onUndeclaredKey composes and still rejects extras on the merged key set. Co-authored-by: Cursor * test: snapshot closed Pet types in attest Filter-fixture Pet no longer includes index signatures once omitted additionalProperties is treated as closed. Co-authored-by: Cursor * fix: compose closed allOf objects across runtimes Per-member exact-key checks made Docker HostConfig unsatisfiable. Reopen closed members then close the merged key set, close ArkType type.module objects, and keep Record on partial open TypeScript types. Co-authored-by: Cursor * fix(typebox): drop null from Composite allOf members Type.Composite of a nullable named object is unsatisfiable, so sibling allOf keys such as Swarm.JoinTokens never validated. Exclude Null from refs and emit the object side of inline unions. Co-authored-by: Cursor * test: compile typia createIs and assert Effect strips extras Closed-object coverage was emit-string and stubbed typia. Run real ttsc-transformed guards, and record that Effect named structs decode extras away instead of rejecting them. Co-authored-by: Cursor * test: compile typia guards once before assertions CI's first ttsc run builds the typia Go plugin (~3.5 min) and outlasted the 180s per-test timeout. Warm ttsc in beforeAll and reuse both is* guards. Co-authored-by: Cursor * chore: mark closed-objects default as a minor changeset Keep the 4.x release as minor, matching the original bump, instead of a major. Co-authored-by: Cursor --------- Co-authored-by: Cursor

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