Api References NestJS

ArgumentMetadata

interface

Interface describing a pipe implementation's transform() method metadata argument.


interface ArgumentMetadata {
  type: Paramtype
  metatype?: Type<any> | undefined
  data?: string | undefined
}

Property	Description
`type: Paramtype`	Read-only. Indicates whether argument is a body, query, param, or custom parameter
`metatype?: Type<any> \| undefined`	Read-only. Underlying base type (e.g., `String`) of the parameter, based on the type definition in the route handler.
`data?: string \| undefined`	Read-only. String passed as an argument to the decorator. Example: `@Body('userId')` would yield `userId`