can't close webpack-dev-server --progress with Ctrl + C

[danburzo]

• Operating System: macOS High Sierra (10.13.6)
• Node Version: v10.9.0
• NPM Version: 6.2.0
• webpack Version: 4.16.5
• webpack-dev-server Version: 3.1.5

• This is a bug
• This is a modification request

Code

Running the dev server with: yarn webpack-dev-server --progress. I'm not including webpack configs since seems to be reproducing on a variety of projects, so I assume it's something that happens regardless of the config? (Happy to provide more info otherwise).

Expected Behavior

Ctrl + C stops the dev server.

Actual Behavior

Ctrl + C does not do anything, dev server continues to compile modules.

May be a regression of #860, #1360?

[michael-ciniawsky]

Could you try with v3.1.6 (#1432) ?

[danburzo]

Woo-hoo! Missed that there's 3.1.6 available, works like a charm with it.

Oops, spoke too soon. It still reproduces on 3.1.6...

[qkdreyer]

Still an issue with v3.1.9

[SebT]

Having the issue on Linux and Mac with webpack-dev-server v3.1.8.

[alexander-akait]

Please create minimum reproducible test repo with steps

[superhawk610]

@SebT I've also had this issue, specifically when using the -theme react preset from the ReasonReact starter. I'm working on getting reproducible steps - it doesn't seem to happen in a dry environment, so I imagine it's some conflict with another file watcher that occurs after some period of use.

Edit: Alright, I've created a branch that consistently reproduces this here. To reproduce:

1. Clone and install dependencies.

yarn

2. Install bucklescript globally.

yarn global add bs-platform

3. Start bucklescript watcher.

yarn start

4. Start dev server.

yarn server

5. Touch a Reason source file, eg:

touch src/components/Stateful/Stateful.re

At this point, the dev server gets stuck at Compiling..., with the logs looking something like

yarn server
yarn run v1.10.1
$ webpack-dev-server
ℹ ｢wds｣: Project is running at http://localhost:8000/
ℹ ｢wds｣: webpack output is served from /home/superhawk610/code/the-completionist/build/
ℹ ｢wds｣: Content not from webpack is served from /home/superhawk610/code/the-completionist/build/
ℹ ｢wds｣: 404s will fallback to /index.html
ℹ ｢wdm｣: Hash: d9fc1cbd98cbce78242b
Version: webpack 4.23.1
Time: 469ms
Built at: 10/31/2018 1:31:25 AM
     Asset       Size  Chunks             Chunk Names
  Index.js    1.2 MiB    main  [emitted]  main
index.html  257 bytes          [emitted]  
Entrypoint main = Index.js
[0] multi (webpack)-dev-server/client?http://localhost:8000 ./src/Index.bs.js 40 bytes {main} [built]
[./node_modules/ansi-html/index.js] 4.16 KiB {main} [built]
[./node_modules/ansi-regex/index.js] 135 bytes {main} [built]
[./node_modules/loglevel/lib/loglevel.js] 7.68 KiB {main} [built]
[./node_modules/reason-react/src/ReactDOMRe.js] 2.6 KiB {main} [built]
[./node_modules/reason-react/src/ReasonReact.js] 22.2 KiB {main} [built]
[./node_modules/strip-ansi/index.js] 161 bytes {main} [built]
[./node_modules/url/url.js] 22.8 KiB {main} [built]
[./node_modules/webpack-dev-server/client/index.js?http://localhost:8000] (webpack)-dev-server/client?http://localhost:8000 7.78 KiB {main} [built]
[./node_modules/webpack-dev-server/client/overlay.js] (webpack)-dev-server/client/overlay.js 3.58 KiB {main} [built]
[./node_modules/webpack-dev-server/client/socket.js] (webpack)-dev-server/client/socket.js 1.05 KiB {main} [built]
[./node_modules/webpack/hot sync ^\.\/log$] (webpack)/hot sync nonrecursive ^\.\/log$ 170 bytes {main} [built]
[./node_modules/webpack/hot/emitter.js] (webpack)/hot/emitter.js 75 bytes {main} [built]
[./src/Index.bs.js] 417 bytes {main} [built]
[./src/components/App/App.bs.js] 1.57 KiB {main} [built]
    + 32 hidden modules
Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = index.html
    [./node_modules/html-webpack-plugin/lib/loader.js!./src/index.html] 466 bytes {0} [built]
    [./node_modules/lodash/lodash.js] 527 KiB {0} [built]
    [./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 489 bytes {0} [built]
    [./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 497 bytes {0} [built]
ℹ ｢wdm｣: Compiled successfully.
ℹ ｢wdm｣: Compiling...

Ctrl+C exits the process but leaves the server running

$ ps -ef | grep webpack
superha+ 23562 23551  0 01:31 pts/2    00:00:00 /bin/sh -c webpack-dev-server
superha+ 23563 23562 95 01:31 pts/2    00:06:22 node /home/superhawk610/code/the-completionist/node_modules/.bin/webpack-dev-server
superha+ 24114 22506  0 01:38 pts/1    00:00:00 grep --color=auto webpack

[superhawk610]

The error (in this case, at least) appears to occur when the dev server gets stuck compiling. Ctrl+C at this point doesn't actually end any processes - all 3 processes listed above remain active after sending SIGINT to the yarn process.

FWIW, I'm using VSCode with the Reason/OCaml extension.

Edit: Alright, this latest commit consistently causes webpack to freeze at Compiling... and orphan the dev server process on SIGINT. It's preventing me from any further development 🙁

Edit 2: After trying to replicate on a second machine, this seems to be a borked install as everything is working fine.

[dcorb]

One developer in our team is having the same issue (the rest of the team not). So it's hard to offer a reproducible test.
webpack-dev-server 3.1.1, Mac Sierra