Process never finish with --aggregated-output

[jlopezxs]

Bug Report

Details

When I execute many tests in jest with the --coverage flag and --aggregated-output the process stays in waiting and doesn't launch the exit code.

Expected Behavior

Execute all the command properly.

Actual Behavior

The process never ends.

Possible Fix

Doing some test if I change the package memory-streams for memorystream everything works well.

//const writer = new streams.WritableStream()
const writer = new MemoryStream();

https://github.com/JSBizon/node-memorystream

Your Environment

Node: v8.1.4
SO: Mac OS

[mysticatea]

Thank you for this issue.

--aggregated-output depends on a number of outputs and the memory of your machine since it accumulates all outputs then prints those after all tasks have done.
If the memory-streams package is using superfluous memory, I should check it and replace it.