multiformats/src/codecs/interface.ts

Interface for multihash, multicodec, multibase and CID

import type { ByteView } from '../block/interface.js'

/**
 * IPLD encoder part of the codec.
 */
export interface BlockEncoder<Code extends number, T> {
  name: string
  code: Code
  encode: (data: T) => ByteView<T>
}

/**
 * IPLD decoder part of the codec.
 */
export interface BlockDecoder<Code extends number, T> {
  code: Code
  decode: (bytes: ByteView<T>) => T
}

/**
 * An IPLD codec is a combination of both encoder and decoder.
 */
export interface BlockCodec<Code extends number, T> extends BlockEncoder<Code, T>, BlockDecoder<Code, T> {}

export type { ByteView }