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renovate/major-4-dependencies-(major)

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This PR contains the following updates:

Package Change Age Adoption Passing Confidence
zod (source) 3.24.2 → 4.4.3 age adoption passing confidence

Release Notes

colinhacks/zod (zod)

v4.4.3

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Commits:

  • 4c2fa95 docs: use Zernio primary wordmark for gold sponsor logo
  • 2aeec83 docs: prune lapsed gold sponsors and rebalance logo sizing
  • 7391be8 docs: prune lapsed silver/bronze sponsors and add active ones
  • 2c70332 docs: normalize bronze sponsor logos to github avatar pattern
  • 9195250 docs: remove Mintlify from bronze sponsors (churned)
  • b8dffe9 docs: remove Numeric and Speakeasy (2+ missed monthly cycles)
  • 1cab693 fix(v4): restore catch handling for absent object keys (#​5937) (#​5939)
  • c2be4f8 fix(v4): generalize optin/fallback to transform; restore preprocess on absent keys (#​5941)
  • f3c9ec0 4.4.3
  • 1fb56a5 docs: document release procedure in AGENTS.md

v4.4.2

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Commits:

  • 0c62df0 Clean up docs navigation and stale labels (#​5901)
  • 20cc794 chore: add security policy and refresh tooling deps
  • 6fbe07b fix(docs): heading anchor links now include the hash so it doesnt scoll all the way up, follows navbar logic (#​5791)
  • 4bbed1b Tighten discriminated union option typing
  • bbac3e5 Update PR guidance for agents
  • cf0dc94 Merge remote-tracking branch 'origin/main' into fix-discriminated-union-key-constraint
  • 292c894 docs: add Zernio gold sponsor
  • 1fc9f31 docs: document codec inversion
  • 1373c85 docs: remove AI disclosure guidance
  • e20d02b chore: ignore triage notes
  • e58ea4d docs: test Zod Mini tab code heights
  • 905761a docs: document preprocess input type narrowing
  • bf64bac chore: tighten test guidance in AGENTS.md
  • 8ec4e73 chore: update play.ts scratch
  • 02c2baf Make z.preprocess defer optionality to inner schema (#​5929)
  • 88015df fix(docs): drop deprecated baseUrl from tsconfig
  • c59d447 4.4.2

v4.4.1

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Commits:

  • 481f7be ci: gate release publishing on full test workflow
  • 95ccab4 test(v3): restore optional undefined expectations
  • cede2c6 fix(v4): reject tuple holes before required defaults (#​5900)
  • edd0bf0 release: 4.4.1
  • 180d83d docs: remove Jazz featured sponsor

v4.4.0

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4.4.0

This is a minor release with a wide set of correctness and soundness fixes. Some fixes intentionally make Zod stricter, so code that depended on previously accepted invalid or ambiguous inputs may need small updates.

Potentially breaking bug fixes

Tuple defaults now materialize output values correctly

Fixed in #​5661. Tuple parsing now more accurately reflects defaults, optional tails, explicit undefined, and under-filled inputs. The headline behavior is that defaults in tuple positions now properly appear in parsed output.

const schema = z.tuple([
  z.string(),
  z.string().default("fallback"),
]);

schema.parse(["a"]);
// ["a", "fallback"]

Trailing optional elements that are absent still stay absent; they are not filled with undefined.

const schema = z.tuple([
  z.string(),
  z.string().optional(),
]);

schema.parse(["a"]);
// ["a"]

But explicit undefined values supplied by the caller are preserved.

schema.parse(["a", undefined]);
// ["a", undefined]

When optional elements appear before later defaults, the parsed tuple is now dense so array operations behave predictably.

const schema = z.tuple([
  z.string(),
  z.string().optional(),
  z.string().default("fallback"),
]);

schema.parse(["a"]);
// ["a", undefined, "fallback"]

Tuple length errors are also more consistent now. Since z.function() arguments are tuple-shaped, function input errors may look different.

Required object properties with z.undefined()

Fixed in #​5661, with follow-up coverage in 57d80a82. A property whose schema is z.undefined() is now treated as required. The key must be present, but its value may be undefined.

const schema = z.object({
  value: z.undefined(),
});

schema.safeParse({}).success;
// false

schema.safeParse({ value: undefined }).success;
// true

Use .optional() when the key itself may be absent.

const schema = z.object({
  value: z.undefined().optional(),
});

schema.safeParse({}).success;
// true

This also affects related .catch(), .partial(), .default(), and .prefault() combinations that previously relied on missing z.undefined() keys being treated as optional.

Safer .merge() behavior with refinements

Fixed in #​5856. The .merge() method now throws when the receiver has refinements, rather than silently producing ambiguous refinement behavior. Refinements from the second schema are preserved.

const a = z.object({ a: z.string() }).refine((val) => val.a.length > 0);
const b = z.object({ b: z.string() });

a.merge(b);
// throws

Prefer .extend() or .safeExtend() for object composition. The .merge() method is still supported for compatibility, but it is discouraged for new code because its semantics around overlapping keys and refinements are easier to misread.

JSON Schema $defs entries no longer include redundant id

Fixed in #​5759. JSON Schema conversion through z.toJSONSchema() now strips redundant id fields from $defs entries. This is required for correctness in older JSON Schema dialects from before $id was introduced: in those dialects, id changes the resolution scope, so leaving it inside an extracted definition can make references resolve incorrectly. The removed value was redundant because the schema had already been extracted into $defs, so the definition key itself is the identifier. This may affect consumers that were reading those internal id fields directly.

Other JSON Schema fixes in this release:

  • Draft-04/OpenAPI 3.0 min/max intersections: #​5700
  • Recursive lazy schemas with .describe(): #​5797
  • Falsy prefault values emitted as defaults: #​5893
  • CUID pattern output tightened: #​5880
String validators are stricter

Base64 validation now rejects whitespace instead of allowing atob()-style whitespace stripping. Fixed in #​5888.

z.base64().safeParse("Zm9v").success;
// true

z.base64().safeParse("Zm 9v").success;
// false

Other string validator changes:

  • CUID validation through z.cuid() has been tightened, and CUID v1 is now deprecated. Fixed in #​5880.
  • HTTP URL validation through z.httpUrl() now rejects malformed HTTP(S) URLs with a missing slash after the protocol. The underlying URL constructor normalizes inputs like https:/example.com, but Zod now rejects them instead of accepting the repaired URL. Fixed in #​5672, related to #​5284.
z.httpUrl().safeParse("https://example.com").success;
// true

z.httpUrl().safeParse("https:/example.com").success;
// false

z.httpUrl().safeParse("http:/www.apple.com").success;
// false
Union paths are fixed in formatted errors

Two union-related error fixes landed:

  • Nested union paths are now preserved correctly in the output of z.treeifyError() and z.formatError(). Fixed in #​5708 and 60ff3987.
  • Invalid discriminated union errors now include discriminator options and improved messages. Fixed in #​5723. This may affect users snapshotting ZodError output.

Other fixes

Record key transforms now run

Fixed in #​5891. Record schemas now run transforms on record keys.

const schema = z.record(
  z.string().transform((key) => key.toUpperCase()),
  z.number()
);

schema.parse({ foo: 1 });
// { FOO: 1 }

Related record fixes:

  • Key refinement failures now surface as structured invalid_key issues. Fixed in #​5719.
  • Non-enumerable properties are skipped more consistently. Fixed in #​5719.
  • The v3-style single-argument z.record(valueType) form works again. Fixed in 0e960108.
Metadata and input handling in fromJSONSchema()

Schema generation from JSON Schema now applies metadata more consistently across enum, const, not, anyOf, and multi-type schemas. Fixed in #​5758. It also rejects or normalizes more non-JSON-like inputs, including cyclic objects and BigInt. Fixed in 87cf0f93.

Codecs

Codec changes:

  • Encoding through z.discriminatedUnion().encode() now works when the discriminator uses a codec. Fixed in #​5769.
  • Codec inversion was added in #​5770.
const stringToNumber = z.codec(
  z.string(),
  z.number(),
  {
    decode: Number,
    encode: String,
  }
);

const numberToString = z.invertCodec(stringToNumber);
Transform context

Transform callbacks now support ctx.addIssue(). Fixed in #​5699.

Conditional .superRefine() with when

The when option was added for .superRefine(). Added in #​5741, with related abort behavior fixed in #​5681.

Defaults for Map and Set

Defaults for Map and Set are now cloned instead of shared across parses. Fixed in #​5855.

const schema = z.map(z.string(), z.number()).default(new Map());

const a = schema.parse(undefined);
const b = schema.parse(undefined);

a === b;
// false
Empty unions

Empty z.union([]), z.xor([]), and discriminated unions no longer crash at construction time. They construct and fail at parse time. Fixed in #​5869.

Floating-point multiples

Number multipleOf() / step() validation is more accurate for decimal and exponent edge cases. Fixed in #​5687 and #​5793.

Global config and jitless

Configuration fixes:

  • Global configuration is now shared through globalThis, improving behavior across mixed CJS/ESM module instances. Fixed in #​5889.
  • Jitless mode now avoids eval probing when set before first access. Fixed in #​5864.
Prototype pollution hardening

Object catchall paths now skip __proto__ keys. Fixed in #​5898.

Performance improvements

Reduced memory usage from lazy-bound methods

Fixed in #​5897. Classic builder methods are now lazy-bound through a shared internal prototype instead of eagerly attached per schema instance. This significantly reduces per-schema method allocation overhead, especially in codebases that construct many schemas. Detached methods continue to work:

const schema = z.string();
const optional = schema.optional;

optional.call(schema);
// still works
Improved tree-shaking

Implemented in 195e8696 and #​5689. Top-level factory calls are annotated as pure, and generated stub package manifests now include sideEffects: false. This gives bundlers more room to remove unused Zod code.

This is intended as the conclusive fix for a long-standing class of tree-shaking and bundle-size issues, especially in Next.js and Turbopack projects. The most visible symptom was that unused validators and locales could survive bundling even when importing from zod/mini or from a narrow subpath.

Related reports include:

{
  "sideEffects": false
}

Locales

Added or updated locale support:

Locale message text changed in some cases, which may affect snapshots.

Closed issues

The following issues were closed by PRs included in this release:

Commits

v4.3.6

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Commits:

v4.3.5

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Commits:

v4.3.4

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Commits:

v4.3.3

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Commits:

v4.3.2

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Commits:

v4.3.1

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Commits:
  • 0fe8840 allow non-overwriting extends with refinements. 4.3.1

v4.3.0

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This is Zod's biggest release since 4.0. It addresses several of Zod's longest-standing feature requests.

z.fromJSONSchema()

Convert JSON Schema to Zod (#​5534, #​5586)

You can now convert JSON Schema definitions directly into Zod schemas. This function supports JSON Schema "draft-2020-12", "draft-7", "draft-4", and OpenAPI 3.0.

import * as z from "zod";

const schema = z.fromJSONSchema({
  type: "object",
  properties: {
    name: { type: "string", minLength: 1 },
    age: { type: "integer", minimum: 0 },
  },
  required: ["name"],
});

schema.parse({ name: "Alice", age: 30 }); // ✅

The API should be considered experimental. There are no guarantees of 1:1 "round-trip soundness": MySchema > z.toJSONSchema() > z.fromJSONSchema(). There are several features of Zod that don't exist in JSON Schema and vice versa, which makes this virtually impossible.

Features supported:

  • All primitive types (string, number, integer, boolean, null, object, array)
  • String formats (email, uri, uuid, date-time, date, time, ipv4, ipv6, and more)
  • Composition (anyOf, oneOf, allOf)
  • Object constraints (additionalProperties, patternProperties, propertyNames)
  • Array constraints (prefixItems, items, minItems, maxItems)
  • $ref for local references and circular schemas
  • Custom metadata is preserved
z.xor() — exclusive union (#​5534)

A new exclusive union type that requires exactly one option to match. Unlike z.union() which passes if any option matches, z.xor() fails if zero or more than

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This PR was generated by Mend Renovate. View the repository job log.

@renovate renovate Bot added the Dependency ⏫ Pull requests that update a dependency file label Jul 13, 2025
@renovate renovate Bot force-pushed the renovate/major-4-dependencies-(major) branch from a8cd15d to daf40ff Compare July 13, 2025 22:53
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@renovate renovate Bot changed the title fix(deps): ⬆️ upgrade zod to v4 fix(deps): ⬆️ upgrade dependencies (major) to v4 Jun 2, 2026
@renovate renovate Bot changed the title fix(deps): ⬆️ upgrade dependencies (major) to v4 fix(deps): ⬆️ upgrade dependencies (major) (major) Jun 22, 2026
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