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fix(zod-test): fixes type-level bug where SeedGenerator was returning fc.Arbitrary<unknown> #558

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Merged
ahrjarrett merged 1 commit into from
Oct 4, 2025
Merged

fix(zod-test): fixes type-level bug where SeedGenerator was returning fc.Arbitrary<unknown> #558

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5 changes: 5 additions & 0 deletions .changeset/shy-shoes-shave.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@traversable/zod-test": patch
---

fix(zod-test): fixes type-level bug where `SeedGenerator` was returning type `fc.Arbitrary<unknown>` (#557)
2 changes: 2 additions & 0 deletions packages/zod-test/src/exports.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,9 @@ export * as Seed from './generator-seed.js'

export { fuzz } from './fuzz.js'
export type { Config } from './generator-options.js'
export type * as Bounds from './generator-bounds.js'
export {
SeedMap,
SchemaGenerator,
SeedGenerator,
SeedInvalidDataGenerator,
Expand Down
6 changes: 3 additions & 3 deletions packages/zod-test/src/generator.ts
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Expand Up @@ -136,7 +136,7 @@ const UnaryMap = {
map: (tie) => fc.tuple(fc.constant(byTag.map), fc.tuple(tie('*'), tie('*'))),
pipe: (tie) => fc.tuple(fc.constant(byTag.pipe), fc.tuple(tie('*'), tie('*'))),
transform: (tie) => fc.tuple(fc.constant(byTag.transform), tie('*')),
promise: () => PromiseSchemaIsUnsupported('SeedMap'),
promise: (tie) => fc.tuple(fc.constant(byTag.promise), tie('*')),
} satisfies { [K in keyof Seed.UnaryMap<never>]: SeedBuilder<K> }

const TerminalSeeds = fn.map(Object_keys(TerminalMap), (tag) => byTag[tag])
Expand Down Expand Up @@ -657,7 +657,7 @@ const seedsThatPreventGeneratingInvalidData = [
* const ZodSchema = zxTest.seedToSchema(seed)
* const dataset = fc.sample(zxTest.seedToValidData(seed), 5)
*
* const results = dataset.map((pt) => ZodSchema.safeParse(pt).success)
* const results = dataset.map((data) => ZodSchema.safeParse(data).success)
*
* console.log(results) // => [true, true, true, true, true]
*/
Expand Down Expand Up @@ -692,7 +692,7 @@ export const SeedValidDataGenerator = SeedGenerator({ exclude: seedsThatPreventG
* const ZodSchema = zxTest.seedToSchema(seed)
* const dataset = fc.sample(zxTest.seedToInvalidData(seed), 5)
*
* const results = dataset.map((pt) => ZodSchema.safeParse(pt).success)
* const results = dataset.map((data) => ZodSchema.safeParse(data).success)
*
* console.log(results) // => [false, false, false, false, false]
*/
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49 changes: 49 additions & 0 deletions packages/zod-test/test/generator.test.ts
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Expand Up @@ -139,3 +139,52 @@ vi.describe('〖️⛳️〗‹‹‹ ❲@traversable/zod-test❳', () => {
`)
})
})

vi.describe('〖️⛳️〗‹‹‹ ❲@traversable/zod-test❳: type-level tests', () => {
vi.test('〖️⛳️〗› ❲zxTest.SeedGenerator❳: Builder["*"] return type', () => {
vi.expectTypeOf(zxTest.SeedGenerator()['*']).toEqualTypeOf<
fc.Arbitrary<
| [10]
| [15]
| [20]
| [25]
| [30]
| [35]
| [40]
| [45]
| [50]
| [55]
| [60]
| [100, zxTest.Bounds.int]
| [150, zxTest.Bounds.bigint]
| [200, zxTest.Bounds.number]
| [250, zxTest.Bounds.string]
| [500, any]
| [550, string | number | bigint | boolean]
| zxTest.Seed.Seed.TemplateLiteral
| [1000, unknown, zxTest.Bounds.array]
| [1500, unknown]
| [2000, unknown]
| [2500, unknown]
| [3000, unknown]
| [3500, unknown]
| [4000, unknown]
| [5000, unknown]
| [5500, unknown]
| [5600, unknown]
| [6000, [[7500, [string, unknown][]], [7500, [string, unknown][]]]]
| [6500, [unknown, unknown]]
| [7000, unknown]
| [7500, [string, unknown][]]
| [8000, unknown[]]
| [8500, unknown[]]
| [9000, [unknown, unknown]]
| [9500, unknown]
| [10000, unknown]
| [10500, () => unknown]
| [100000, unknown]
>
>()
})
})

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