core result.ts

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  export interface Ok<T> {
  ok: true;
  value: T;
}
 
export interface Err<E> {
  ok: false;
  err: E;
}
 
export type Result<T, E> = Ok<T> | Err<E>;
 
export function Ok<T>(value: T): Ok<T> {
  return { ok: true, value };
}
 
export function Err<E>(err: E): Err<E> {
  return { ok: false, err };
}