Troubleshooting

Troubleshooting

JSTime not running on an M1 (or Apple Silicon)

If you see a message like this

[1] 28447 killed jstime create next ./test

It most likely means you’re running JSTime’s x64 version on Apple Silicon. This happens if JSTime is running via Rosetta. Rosetta is unable to emulate AVX2 instructions, which JSTime indirectly uses.

The fix is to ensure you installed a version of JSTime built for Apple Silicon.

error: Unexpected

If you see an error like this:

It usually means the max number of open file descriptors is being explicitly set to a low number. By default, JSTime requests the max number of file descriptors available (which on macOS, is something like 32,000). But, if you previously ran into ulimit issues with, e.g., Chokidar, someone on The Internet may have advised you to run ulimit -n 8096.

That advice unfortunately lowers the hard limit to 8096. This can be a problem in large repositories or projects with lots of dependencies. Chokidar (and other watchers) don’t seem to call setrlimit, which means they’re reliant on the (much lower) soft limit.

To fix this issue:

1. Remove any scripts that call ulimit -n and restart your shell.
2. Try again, and if the error still occurs, try setting ulimit -n to an absurdly high number, such as ulimit -n 2147483646
3. Try again, and if that still doesn’t fix it, open an issue

Unzip is required

Unzip is required to install JSTime on Linux. You can use one of the following commands to install unzip:

Debian / Ubuntu / Mint

$ sudo apt install unzip

RedHat / CentOS / Fedora

$ sudo dnf install unzip

Arch / Manjaro

$ sudo pacman -S unzip

OpenSUSE

$ sudo zypper install unzip

jspm install is stuck

Please run jspm install --verbose 2> logs.txt and send them to me in JSTime’s discord. If you’re on Linux, it would also be helpful if you run sudo perf trace jspm install --silent and attach the logs.

Uninstalling

JSTime’s binary and install cache is located in ~/.jstime by default. To uninstall jstime, delete this directory and edit your shell config (.bashrc, .zshrc, or similar) to remove ~/.jstime/bin from the $PATH variable.

$ rm -rf ~/.jstime # make sure to remove ~/.jstime/bin from $PATH