fix(deps): update dependency quicktype-core to v26

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
quicktype-core	^24.0.2 → ^26.0.0

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Release Notes

glideapps/quicktype (quicktype-core)

v26.0.0: quicktype 26.0.0

Compare Source

quicktype 26.0.0

quicktype 26 modernizes the default generated code across most target languages: current serialization frameworks, current language standards, and safer types. Because versions 24, 25, and 26 shipped in quick succession, many users will upgrade directly from 23.x — so this document calls out every breaking change since 23.2.6, not just changes since 25.1.0. Nearly every changed generated-code default has a flag to restore the previous output (see the table below).

Am I affected?

• CLI users: check the generated-code defaults table for your target languages, and note the stricter date-time/integer inference. Add the listed flags to keep your previous output.
• quicktype-core embedders: additionally note the Node.js ≥ 20.19 requirement, the new exports map (deep imports only via quicktype-core/dist/*), typed rendererOptions keys, and the stricter languageNamed().

Breaking changes since 23.2.6

Runtime and packaging (introduced in 24.x)

• Node.js 20.19 or newer is required. The published packages are built and tested on Node.js 20, 22, and 24.
• Native fetch replaces bundled fetch polyfills. If your application supplied a fetch polyfill only for quicktype, you can remove it.
• quicktype-core ships a dual CJS/ESM build with an exports map. require resolves the CommonJS build, import resolves the ESM build. Deep imports must go through quicktype-core/dist/*; other undeclared paths no longer resolve.
• languageNamed() accepts only canonical language names. Display names and file extensions (e.g. "C++", "kt") are no longer accepted; unknown strings return undefined instead of throwing. Use isLanguageName() to validate arbitrary strings.

Core API (introduced in 25.0.0)

• rendererOptions keys are type-checked in the quicktype-core API. TypeScript consumers passing unknown option keys now get compile errors.

Type inference (introduced in 25.0.0)

• Date-times are inferred only for strict RFC 3339 strings. Loosely formatted date strings stay plain strings.
• Whole numbers outside the target's integer range are inferred as floating point. For example, 9007199254740991 now becomes Float64 in Crystal instead of an overflowing Int32.

Generated-code defaults (new in 26.0.0)

These change what the generated code looks like and which dependencies it needs. Each has a flag to restore the previous output.

Language	New default	Previous default	Restore old behavior
C#	System.Text.Json ([JsonPropertyName], #nullable enable), C# 8	Newtonsoft.Json, C# 6	--framework NewtonSoft --csharp-version 6
Kotlin	Jackson	Klaxon	--framework klaxon
C++	C++17 std::variant / std::optional, no Boost dependency	boost::variant / boost::optional	--boost
Java	List<T>	T[] arrays	--array-type array
Python	@dataclass + PEP 585 generics (list[...]) — generated code now targets Python 3.9+	explicit __init__, typing.List	--python-version 3.7
Scala 3	circe Encoder/Decoder derivation	plain case classes	--just-types
Swift	explicit CodingKeys enums	implicit coding keys	--no-coding-keys
Dart	final fields (immutable)	mutable fields	--no-final-props
TypeScript / Flow	string-literal unions instead of enums; unknown instead of any	enums; any	--no-prefer-unions --no-prefer-unknown
Elm	Elm 0.19, native List	Elm 0.18, Array	--array-type array (0.18 no longer supported)
Haskell	native lists	Vector	(no restore flag)
Rust	#[derive(Debug, Clone, Serialize, Deserialize)], pub fields	Serialize/Deserialize only, private fields	--no-derive-debug --no-derive-clone --visibility private

Also in TypeScript, JSON Schema arrays with minItems/maxItems (and 2020-12 prefixItems) now generate tuple types.

Output for the remaining targets is unchanged: in our JSON-input comparison against 23.2.6, C (cJSON), Elixir, Flow, Go, JavaScript, JavaScript PropTypes, JSON Schema, Objective-C, Pike, Ruby, Smithy, TypeScript, TypeScript Effect Schema, and TypeScript Zod produced byte-identical output. (TypeScript and Flow appear in both lists because their new defaults only alter output where enums, any, or tuple-typed arrays occur — typically with JSON Schema input.)

Highlights since 23.2.6 (non-breaking)

• C#: C# version 8 support with nullable reference types and [JsonRequired]; option to suppress DateOnly/TimeOnly converters.
• Kotlin: kotlinx-serialization fixture coverage; date/datetime support from JSON Schema.
• Python: Python 3.9/3.10 type-hint syntax support.
• Rust: --integer-type option with conservative i32 inference.
• Swift: --final-classes option; JSONNull hash(into:) emitted by default.
• Scala 3: improved enum generation.
• TypeScript/Flow: new --prefer-unknown option; TypeScript input now supports Date and Map.
• C (cJSON): option to generate source/header pairs.
• JSON Schema: unevaluatedProperties support; JSON Schema 2020-12 prefixItems tuples; Windows absolute schema paths (drive-letter and UNC) work correctly.
• PHP: non-nullable unions; fixed crash on inferred dates.
• Performance: optimized Markov-chain representation and hot paths in the canonical pipeline.
• Reliability: --just-types now works in every language (previously crashed the option parser for C# and Kotlin); clear error for empty addSource samples; correct --help rendering for boolean flags; fixed nested intersections in union flattening; Kotlin/Klaxon map deserialization fix.

Contributors

Huge thanks to everyone who contributed since 23.2.6:

@​ankrgyl, @​artursvonda, @​AysajanE, @​basdl, @​cconverse711, @​coyaSONG, @​Flern, @​h3ndrk, @​HavardNJ-Laerdal, @​haya14busa, @​jessicamrbr, @​jonashao, @​k-vasily, @​Leonard013, @​liosha, @​matthew-c-lee, @​mikecrowe-otp, @​mohamedelhabib, @​nikhilunni, @​PssbleTrngle, @​Quafadas, @​schani, @​thives, @​tolbon, @​uuf6429, @​vexdev, @​w830207 — and dependabot for keeping dependencies current.

Full changelog: glideapps/quicktype@v25.1.0...v26.0.0 (see the v24.0.0, v25.0.0, and v25.1.0 releases for the full history since 23.2.6, which predates release tags.)

v25.1.0

Compare Source

What's Changed

• feat(swift): add final classes option by @​coyaSONG in #​2947
• Add canonical pipeline benchmark and optimize hot paths by @​schani in #​2946
• fix: use output filename in TypeScript usage imports by @​AysajanE in #​2948
• Handle JSON Schema 2020-12 prefixItems tuples by @​Leonard013 in #​2949

New Contributors

• @​coyaSONG made their first contribution in #​2947
• @​Leonard013 made their first contribution in #​2949

Full Changelog: glideapps/quicktype@v25.0.0...v25.1.0

v25.0.0

Compare Source

What's Changed

• Added support for original field and type naming for C++ language. by @​basdl in #​2639
• TypeScript dependency cleanups: latest compiler, devDeps, exact input pin, dead artifact removal by @​schani in #​2915
• Infer date-times only for strict RFC 3339 strings by @​schani in #​2916
• Document LanguageName and the isLanguageName validation pattern by @​schani in #​2917
• Bump yaml from 2.8.3 to 2.9.0 by @​dependabot[bot] in #​2922
• Bump tsx from 4.23.0 to 4.23.1 by @​dependabot[bot] in #​2921
• Upgrade pako 1.0.6 → 3.0.1 by @​schani in #​2924
• Finish the Biome migration: working lint scripts, CI format check, drop dead ESLint deps by @​schani in #​2923
• Support prerelease publishing from release tags by @​schani in #​2925
• Adopt Biome lint rules by @​schani in #​2926
• CI: run once-only extras on Node 24; add Node 22 support leg by @​schani in #​2927
• fix(swift): emit JSONNull hash(into:) by default by @​AysajanE in #​2928
• Fix Swift helper indentation and PHP header comment grammar by @​schani in #​2930
• Optimize Markov chain representation by @​schani in #​2929
• fix(core): throw a clear error when addSource gets an empty samples array by @​schani in #​2937
• fix(cli): don't render a 'string' placeholder for boolean flags in --help by @​schani in #​2936
• fix(typescript-input): support Date and Map in TypeScript input by @​schani in #​2940
• fix(core): enforce rendererOptions keys in the type system by @​schani in #​2939
• fix(core): infer whole numbers outside the target's integer range as double by @​schani in #​2938
• Fix nested intersections in union flattening by @​ankrgyl in #​2944
• Kotlin/Klaxon: fix deserialization of maps with empty-object values by @​schani in #​2945
• feat(options)!: unify --just-types across all languages by @​schani in #​2943
• fix(php): support non-nullable unions by @​schani in #​2942

New Contributors

• @​basdl made their first contribution in #​2639
• @​AysajanE made their first contribution in #​2928

Full Changelog: glideapps/quicktype@v24.0.2...v25.0.0

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