Migration: @kubb/plugin-faker

Part of the v4 → v5 migration guide. See the full option reference in @kubb/plugin-faker.

dateType, integerType, unknownType, and emptySchemaType moved to adapterOas. See Migration: @kubb/adapter-oas. resolver.resolveName replaces transformers.name.

Removed: paramsCasing

v4 kubb.config.ts

pluginFaker({ paramsCasing: 'camelcase' })

Properties inside the generated path, query, and header mocks are now always camelCase, so drop the option. This keeps the mocks assignable to the types from @kubb/plugin-ts, which also camelCases parameters.

Generated output

Stricter return type and intermediate variable

The create prefix stays (createPet is still createPet), matching the naming plugin-msw uses. The return type and internal structure change.

Diff

- export function createPet(data?: Partial<Pet>): Pet {
-   return {
-     ...{
-       id: faker.number.int(),
-       ...
-     },
-     ...(data || {}),
-   }
- }
+ export function createPet(data?: Partial<Pet>): Required<Pet> {
+   const defaultFakeData = {
+     id: faker.number.int(),
+     ...
+   }
+   return {
+     ...defaultFakeData,
+     ...(data || {}),
+   } as Required<Pet>
+ }

Required<Pet> guarantees callers see populated fields even when the schema marks them optional.