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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
/** Create dummy `Deno.Conn` object with given base properties. */export function mockConn(base: Partial<Deno.Conn> = {}): Deno.Conn {  return {    localAddr: {      transport: "tcp",      hostname: "",      port: 0,    },    remoteAddr: {      transport: "tcp",      hostname: "",      port: 0,    },    rid: -1,    closeWrite: () => {      return Promise.resolve();    },    read: (): Promise<number | null> => {      return Promise.resolve(0);    },    write: (): Promise<number> => {      return Promise.resolve(-1);    },    close: () => {},    readable: new ReadableStream({      type: "bytes",      async pull(_controller) {      },      cancel() {      },      autoAllocateChunkSize: 1,    }),    writable: new WritableStream({      async write(_chunk, _controller) {      },      close() {      },      abort() {      },    }),    // TODO(ry) Remove the following ts-ignore.    // @ts-ignore This was added to workaround incompatibilities between Deno versions.    setNoDelay: (_nodelay?: boolean) => {},    // @ts-ignore This was added to workaround incompatibilities between Deno versions.    setKeepAlive: (_keepalive?: boolean) => {},    ...base,  };}