declare const toString: (self: Etag) => string

declare const layer: Layer<Generator, never, never>

declare const layerWeak: Layer<Generator, never, never>

type Etag = Weak | Strong

export interface Generator {
  readonly [GeneratorTypeId]: GeneratorTypeId
  readonly fromFileInfo: (info: FileSystem.File.Info) => Effect.Effect<Etag>
  readonly fromFileWeb: (file: Body.HttpBody.FileLike) => Effect.Effect<Etag>
}

export interface Strong {
  readonly _tag: "Strong"
  readonly value: string
}

export interface Weak {
  readonly _tag: "Weak"
  readonly value: string
}

declare const Generator: Context.Tag<Generator, Generator>

declare const GeneratorTypeId: unique symbol

type GeneratorTypeId = typeof GeneratorTypeId