claude-mods/skills/typescript-ops/assets/typescript-facts.json

{
  "_comment": "Canonical fast-moving facts the typescript-ops skill encodes. scripts/check-typescript-facts.py asserts SKILL.md + references name these consistently (--offline) and probes the npm registry for major-version drift (--live). Edit deliberately: a change here is a skill-content decision, not housekeeping.",
  "schema": "claude-mods.typescript-ops.facts/v1",
  "as_of": "2026-07-05",
  "registry": "https://registry.npmjs.org",
  "currency_note": "> Ecosystem facts verified as of 2026-07-05 (TypeScript 6, Zod 4, Valibot 1).",
  "packages": [
    {
      "name": "typescript",
      "documented_major": 6,
      "role": "language",
      "where": "SKILL.md (Modern Language Features 5.x -> 6.0: satisfies, standard decorators, const type params, using, inferred predicates; TS 6.0 defaults section); references/config-strict.md (strict default in 6.0, removed module/moduleResolution options). Historical feature floors (TS 4.4+, 4.7+) remain as floors, not currency anchors."
    },
    {
      "name": "zod",
      "documented_major": 4,
      "role": "runtime validation (default choice)",
      "where": "SKILL.md (Runtime Validation (Zod 4): top-level z.email(), unified error param, zod/mini); references/ecosystem.md (z.uuid/z.email top-level formats, unified error param, discriminatedUnion, coerce)."
    },
    {
      "name": "valibot",
      "documented_major": 1,
      "role": "runtime validation (tree-shakeable alt)",
      "where": "references/ecosystem.md (stable since 1.0; v.pipe, v.InferOutput, v.safeParse, v.picklist)."
    }
  ]
}