Typify Fork — Roadmap

Forked from oxidecomputer/typify. This roadmap tracks upstream PRs/issues we plan to integrate or fix before building on top of the fork.

Phase 1: Quick Wins

Small, well-scoped fixes that improve correctness immediately.

Cherry-pick PR #991 — Fix untagged enum automatic ordering. Integer variant must come before Number to avoid unreachable deserialization.
#918 — Types with explicit defaults on required fields should implement Default.
#986 — Bounded integer constructors ignore bounds (From<u8> instead of TryFrom<u8>).
#843 — Integer minimum property rendered as float in generated code.
#948 — Special characters in enum variant names (=, >, <, etc.) cause panics.

The single highest-impact change — root cause of 5+ open issues.

#414 — Replace broken anyOf flattened struct with delegation to convert_one_of (untagged enum).
- Resolves: #895 (flatten on String panic), #710 (anyOf can't serialize), #790 (unreachable code in defaults.rs)
- Partially resolves: #669 (wrong enum variants — now enum instead of broken struct)
- Not resolved: #897 (allOf of oneOfs — separate merge.rs issue)

#480 — Transform if/then/else into oneOf via allOf(if,then) / allOf(not(if),else) in merge.rs.
#847 / #489 / #954 — Replace panics in convert_not and merge.rs with graceful fallback to serde_json::Value.
#435 — Replace todo!() panics in merge.rs not handling with best-effort behavior.

Major rework following upstream's "Big Plan" (#579).

#579 — JSON Schema 2020-12 normalization + external $ref bundler + non-$defs ref resolution.
- Resolves: #201 (external $ref), #828 (non-$defs refs), #933 (bare filename refs)
- New APIs: add_schema_from_value(), add_schema_with_externals()

#862 — String enums with const values + fallback variant.
#975 — Smallest integer type selection for bounded ranges (e.g. [1..32] → NonZeroU8).
#882 — Replace patternProperties/propertyNames assertion panics with best-effort behavior.
#498 — Discriminator / internally tagged enum support.
#821 / #695 / #801 — Naming conflicts and title propagation.
#886 — schemars 1.0 upgrade.

PR	Title	Status
#982	Fix allOf of oneOfs via cartesian product	Active review, promising
#987	Handle bounded integers (DRAFT)	CI passes, direction may change
#912	Better subtype naming from SchemaObject	Stalled, needs tests

PR	Reason
#988	Maintainer flagged flawed logic
#939	Upstream CI infra only
#938	Upstream CI policy only
#293	3+ years old WIP, merge conflicts