import { Fn, Transceiver, TransceiverMode } from "atom.io/internal";
import { primitive } from "atom.io/foundations/json";
import { Subject } from "atom.io/foundations/subject";
import { Enumeration } from "atom.io/foundations/enumeration";
//#region src/transceivers/u-list/u-list.d.ts
type SetMutations = Exclude<keyof Set<any>, symbol | keyof ReadonlySet<any>>;
type SetUpdate<P extends primitive> = {
  type: `add` | `delete`;
  value: P;
} | {
  type: `clear`;
  values: P[];
};
type UListUpdateType = SetUpdate<any>[`type`];
type PackedSetUpdate<P extends primitive> = string & {
  update?: SetUpdate<P>;
};
declare const SET_UPDATE_ENUM: Enumeration<[`add`, `delete`, `clear`]>;
type SetMutationHandler = { [K in UListUpdateType]: Fn; };
type UListView<P extends primitive> = ReadonlySet<P> & {
  subscribe: (key: string, fn: (update: PackedSetUpdate<P>) => void) => () => void;
};
declare class UList<P extends primitive> extends Set<P> implements Transceiver<UListView<P>, PackedSetUpdate<P>, ReadonlyArray<P>>, SetMutationHandler {
  mode: TransceiverMode;
  readonly subject: Subject<PackedSetUpdate<P>>;
  constructor(values?: Iterable<P>);
  readonly READONLY_VIEW: UListView<P>;
  toJSON(): ReadonlyArray<P>;
  static fromJSON<P extends primitive>(json: ReadonlyArray<P>): UList<P>;
  add(value: P): this;
  clear(): void;
  delete(value: P): boolean;
  subscribe(key: string, fn: (update: PackedSetUpdate<P>) => void): () => void;
  emit(update: SetUpdate<P>): void;
  do(packed: PackedSetUpdate<P>): null;
  undo(packed: PackedSetUpdate<P>): number | null;
  static packUpdate<P extends primitive>(update: SetUpdate<P>): PackedSetUpdate<P>;
  static unpackUpdate<P extends primitive>(packed: PackedSetUpdate<P>): SetUpdate<P>;
}
//#endregion
export { PackedSetUpdate, SET_UPDATE_ENUM, SetMutationHandler, SetMutations, SetUpdate, UList, UListUpdateType, UListView };
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