Using Generics with Context Tags in TypeScript

import { Context, Effect, Schema } from 'effect'
import { Line } from '../types'

export interface Service<T, I> {
  readonly schema: Schema.Schema<Line<T>, I>
  readonly processValidLine: (validLine: Line<T>) => Effect.Effect<unknown>
}

export class Tag extends Context.Tag('@service')<
  Tag,
  Service<
    {
      [key: string]: unknown
    },
    {
      [key: string]: unknown
    }
  >
>() {}