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import type { HexString } from 'https://deno.land/x/polkadot@0.2.40/util/types.ts';import type { Codec, Inspect, IU8a, Registry } from '../types/index.ts';
import { isNull } from 'https://deno.land/x/polkadot@0.2.40/util/mod.ts';
/** * @name Null * @description * Implements a type that does not contain anything (apart from `null`) */export class Null implements Codec {  readonly encodedLength = 0;  readonly isEmpty = true;  readonly registry: Registry;
  public createdAtHash?: IU8a;  public initialU8aLength = 0;  public isStorageFallback?: boolean;
  constructor (registry: Registry) {    this.registry = registry;  }
  /**   * @description returns a hash of the contents   */  public get hash (): IU8a {    throw new Error('.hash is not implemented on Null');  }
  /**   * @description Compares the value of the input to see if there is a match   */  public eq (other?: unknown): boolean {    return other instanceof Null || isNull(other);  }
  /**   * @description Returns a breakdown of the hex encoding for this Codec   */  public inspect (): Inspect {    return {};  }
  /**   * @description Returns a hex string representation of the value   */  public toHex (): HexString {    return '0x';  }
  /**   * @description Converts the Object to to a human-friendly JSON, with additional fields, expansion and formatting of information   */  public toHuman (): null {    return this.toJSON();  }
  /**   * @description Converts the Object to JSON, typically used for RPC transfers   */  public toJSON (): null {    return null;  }
  /**   * @description Converts the value in a best-fit primitive form   */  public toPrimitive (): null {    return null;  }
  /**   * @description Returns the base runtime type name for this instance   */  public toRawType (): string {    return 'Null';  }
  /**   * @description Returns the string representation of the value   */  public toString (): string {    return '';  }
  /**   * @description Encodes the value as a Uint8Array as per the SCALE specifications   */  public toU8a (_isBare?: boolean): Uint8Array {    return new Uint8Array();  }}