Method concat

bin/yarn-standalone.js:26296–26301

(integrity, opts)

    }).filter(x => x.length).join(sep)
  }
  concat (integrity, opts) {
    const other = typeof integrity === 'string'
    ? integrity
    : stringify(integrity, opts)
    return parse(`${this.toString(opts)} ${other}`, opts)
  }
  hexDigest () {
    return parse(this, {single: true}).hexDigest()
  }