OverwriteAdditionalPropertiesPlugin

According to the OpenAPI 3.1 specification, object schemas without an explicit additionalProperties declaration are equivalent to additionalProperties: true. This means the generated TypeScript types will include an index signature ([key: string]: unknown), making type constraints loose.

OverwriteAdditionalPropertiesPlugin can force additionalProperties: false on object schemas that haven't explicitly declared additionalProperties, preventing the generation of index signatures.

.keqrc.ts

import { OverwriteAdditionalPropertiesPlugin } from '@keq-request/cli/plugins'

export default defineKeqConfig({
  outdir: "./src/apis",
  modules: {
    catService: "./cat-service-swagger.json",
  },
  plugins: [
    new OverwriteAdditionalPropertiesPlugin({
      disallowIfNotPresent: true,
    }),
  ],
})

Configuration Options

Option	Type	Default	Description
disallowIfNotPresent	boolean	false	When enabled, object schemas without additionalProperties will be forced to additionalProperties: false