How to use the detect function from async

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    })
  })
}
async detect(coll, iteratee) {    
  return new Promise(async (resolve, reject) => { 
    async.detect(coll, iteratee, (err, res) => {
      if (err) { 
        reject(err)
      } else {
        resolve(res)
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* Result will be the first item in the array that passes the truth test
* (iteratee) or the value `undefined` if none passed. Invoked with
* (err, result).
* @example
*
* async.detect(['file1','file2','file3'], function(filePath, callback) {
*     fs.access(filePath, function(err) {
*         callback(null, !err)
*     });
* }, function(err, result) {
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