release aidev SIG 3/5

Oh My Pi v17.2.8: omptype schema engine upgrades

Oh My Pi v17.2.8 upgrades the bundled omptype schema engine with intersection and pipe operators, bigint and RegExp literals in the string DSL, Standard Schema V1 interop, fromJsonSchema() for rebuilding schemas from JSON Schema documents, $defs/$ref emission for recursive aliases, an AnyType constraint, and richer union/collection error reporting. Default() values now materialize for undefined input, and .narrow()/.filter() accept OmpErrors returns.

PUBLISHED2026-08-04
OBSERVED2026-08-21
AGE21d
SOURCES1
  • Intersection and pipe operators in schema DSL
  • BigInt and RegExp literal support in string DSL
  • Standard Schema V1 interop (~standard with synchronous validation)
  • fromJsonSchema(): rebuild callable schemas from JSON Schema (draft-07/2020-12)
  • $defs/$ref emission for recursive alias schemas in toJsonSchema()
  • AnyType for generic functions accepting any schema
  • Root .default() materializes for undefined input
  • .narrow()/.filter() accept OmpErrors returns
  • io: 'input' / io: 'output' options on toJsonSchema()
  • Lazy activation of advanced normalization for low-overhead construction
  • .default() typed input-side, marks input as optional
  • Parse keywords union-aware in inference
  • Alias intersections defer through memoized lazy nodes (fixes cyclic scope stack overflow)
featurecapability

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