javascript - dynamically creating function with promise infinite loop mocha -

8 hours later....

not sure happened, realized when wrote file root directory of project, got stuck in infinite loop. anywhere else, worked fine.

//update

still working on this. missed superbowl. update have writefilesync gives exact same error.

i've been banging head on 1 while now.

promisefunction = [promisefunction1, promisefunction2, promisefunction3].reduce((oldfunction, newfunction)=>{  return function (){   return oldfunction().then(()=>{    return newfunction()    })   }  } 

when try test promisefunction(), infinite test loop (all of tests test promisefunction keep firing in perpetuity)

the catch however, promise function screwing promisify(fs.writefile)

when try using different promise function, promisify(fs.readfile), works fine.

when console log difference between readfile , writefile promises, there respective results:

//readfile      readfilepromise promise {   _bitfield: 67108864,   _fulfillmenthandler0: undefined,   _rejectionhandler0:     promise {      _bitfield: 0,      _fulfillmenthandler0: undefined,      _rejectionhandler0: undefined,      _promise0: undefined,      _receiver0: undefined },   _promise0: undefined,   _receiver0: undefined }  //writefile     writefilepromise promise {   _bitfield: 67108864,   _fulfillmenthandler0: undefined,   _rejectionhandler0:     promise {      _bitfield: 0,      _fulfillmenthandler0: undefined,      _rejectionhandler0: undefined,      _promise0: undefined,      _receiver0: undefined },   _promise0: undefined,   _receiver0: undefined } 

i not understand why getting infinite loop writefile. please god help.

if want series perhaps returning function not want. because nothing going called. instead leverage promise chaining:

[promisefunction1, promisefunction2, promisefunction3]   .reduce((memo, next) => memo.then(next), promise.resolve());