Bug: Check failed: U_SUCCESS when using the --watch option

[pal03377]

Choose one: is this a bug report or feature request? bug report

When I try using the coffeescript watch option in a command like
coffee --watch --map --output coffee/out --compile coffee
, the following error message appears:

# Fatal error in , line 0
# Check failed: U_SUCCESS(status).
#
#
#
#FailureMessage Object: 0000003DBD72DF70

(the ID after the "FailureMessage Object" part is changing per execution)

Input Code

console.log "Hello world"

For the exact minimal setup see the attached zip file:
coffee-test.zip

Expected Behavior

No errors appear and coffeescript goes into watch mode.

Current Behavior

The code is compiled (JavaScript files are created), but watch mode is not enabled and instead an error message is shown, with varying IDs:

The bug does not appear when the --watch option is not in use.

The --map --output coffee/out options seem not to matter, the error still occurs when I omit them.

Possible Solution

?

Context

Trying to watch my environment and let coffee auto-compile my code.

Environment

• CoffeeScript version: 2.4.1
• Node.js version: v12.0.0
• npm version: 6.9.0
• Windows version: Windows 10 Home 64 bit build 17763.437 (freshly installed about 3 days ago)

[pal03377]

Seems to be a bug with Node.js 12.0. Rolling back to 10.15.3 like suggested in an issue in the vue-cli repo helped. I will close this as it seems that the bug is not caused by coffeescript itself.

[GeoffreyBooth]

Dunno if this matters, but your output folder seems to be inside the path you're watching; as in, the output could itself be getting watched. I would suggest you move your watched files into a subfolder, like coffee/src.

[pal03377]

coffee-test.zip
coffee --watch --map --output coffee/out --compile coffee/src

I now set it up like you suggested and the error message doesn't change when I use node 12 (changing versions with nvm). Still thanks for the suggestion.