ts-node-dev: Cryptic errors when running ts-node-dev

I was trying to use ts-node-dev develop ts actions in my project, which are just runnable typescript files.

Here’s what sometimes happens when I run yarn ts-node-dev --respawn --compile-timeout 30000 --notify=false src/actions/hello.ts:

yarn run v1.3.2
$ /path/to/project/node_modules/.bin/ts-node-dev --respawn --compile-timeout 30000 --notify=false src/actions/hello.ts
Error: Could not require /path/to/project/src/actions/hello.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_actions_hello_ts_4b7034ed73736302bd98ace10b2ead962243eb48412af14fccc6e4c9447a0ee8.js
    at compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:27:13)
    at Module.m._compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:41:36)
    at Module._extensions..js (module.js:671:10)
    at require.extensions.(anonymous function) (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:43:14)
    at Object.nodeDevHook [as .ts] (/path/to/project/node_modules/ts-node-dev/lib/hook.js:61:7)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
[ERROR] 14:11:29 Error: Could not require /path/to/project/src/actions/hello.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_actions_hello_ts_4b7034ed73736302bd98ace10b2ead962243eb48412af14fccc6e4c9447a0ee8.js
[INFO] 14:11:42 Restarting: /path/to/project/src/actions/hello.ts has been modified
Error: Could not require /path/to/project/src/lib/custom-sort-keys.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_lib_custom_sort_keys_ts_85f47a355a422b5df586503ceb1aa07cc0328a953a0c9ebe77023bef5edbbdea.js
    at compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:27:13)
    at Module.m._compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:41:36)
    at Module._extensions..js (module.js:671:10)
    at require.extensions.(anonymous function) (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:43:14)
    at Object.nodeDevHook [as .ts] (/path/to/project/node_modules/ts-node-dev/lib/hook.js:61:7)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
[ERROR] 14:12:12 Error: Could not require /path/to/project/src/lib/custom-sort-keys.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_lib_custom_sort_keys_ts_85f47a355a422b5df586503ceb1aa07cc0328a953a0c9ebe77023bef5edbbdea.js
[INFO] 14:12:16 Restarting: /path/to/project/src/actions/hello.ts has been modified
[INFO] 14:12:46 Restarting: /path/to/project/src/actions/hello.ts has been modified
Error: Could not require /path/to/project/src/lib/extract-legacy-assets-tree.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_lib_extract_legacy_assets_tree_ts_1e7f51aadf447bb3e20188e0469ac27af6675f4ba2b32e9438614f59b57bc1c5.js
    at compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:27:13)
    at Module.m._compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:41:36)
    at Module._extensions..js (module.js:671:10)
    at require.extensions.(anonymous function) (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358259402.js:43:14)
    at Object.nodeDevHook [as .ts] (/path/to/project/node_modules/ts-node-dev/lib/hook.js:61:7)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
Error [ERR_IPC_DISCONNECTED]: IPC channel is already disconnected
    at ChildProcess.target.disconnect (internal/child_process.js:746:26)
    at Pipe.channel.onread (internal/child_process.js:508:14)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I don’t understand where these are coming from and what is also strange is that I cannot make these errors reproducible for any specific content of my typescript files. For example, the error may show up at first, but then after I comment and uncomment a few lines, it disappears. At the same time, there is a likelihood that the process may completely crash, like in the example above.

Similar errors are shown when I run ts-node-dev without any options:

yarn ts-node-dev src/actions/hello.ts
yarn run v1.3.2
$ /path/to/project/node_modules/.bin/ts-node-dev src/actions/hello.ts
Error: Could not require /path/to/project/src/actions/hello.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_actions_hello_ts_7ac73806ede5e6231c25cb24297c4973531ff760794d55c116c7d946dc8640a4.js
    at compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358523172.js:27:13)
    at Module.m._compile (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358523172.js:41:36)
    at Module._extensions..js (module.js:671:10)
    at require.extensions.(anonymous function) (/private/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/ts-node-dev-hook-1518358523172.js:43:14)
    at Object.nodeDevHook [as .ts] (/path/to/project/node_modules/ts-node-dev/lib/hook.js:61:7)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
[ERROR] 14:15:33 Error: Could not require /path/to/project/src/actions/hello.ts, compiled path:/var/folders/vp/cg66j_sj5_ncxlgvgt7pjn2h0000gn/T/.ts-node/compiled/src_actions_hello_ts_7ac73806ede5e6231c25cb24297c4973531ff760794d55c116c7d946dc8640a4.js

Despite all the errors above, running yarn ts-node src/actions/hello.ts works:

yarn run v1.3.2
$ /path/to/project/node_modules/.bin/ts-node src/actions/hello.ts
ACTION OUTPUT
✨  Done in 0.97s.

What could be causing this? How can I help with debugging given that I’m unable to craft a MWE?

My env:

node 9.5.0
yarn: 1.3.2
ts-node: 4.1.0
ts-node-dev 1.0.0-pre.9
macOS High Sierra

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 48 (27 by maintainers)

Commits related to this issue

use execSync to watch compiled file, issue #6 — committed to wclr/ts-node-dev by wclr 6 years ago

Most upvoted comments

It’s working! 🎉 (And it’s a lot faster than nodemon)

testerez on Feb 16, 2018

Thanks for releasing the update @whitecolor! I switched to 1.0.0-pre.11, but unfortunately the error remained. My current workaround involves using nodemon, which is probably less efficient:

"scripts": {
    "watch": "nodemon --exec ts-node --ext ts --watch src",
    "watch:broken": "ts-node-dev --respawn --notify=false"
}

yarn watch src/actions/my-action.ts

kachkaev on Feb 12, 2018

I can also confirm that I no longer see the error in 1.0.0-pre.15! 🎉 A huge thank you @whitecolor!

ts-node-dev is indeed blazing fast compared to nodemon + ts-node ❤️

kachkaev on Feb 16, 2018

Supposedly should work.

wclr on Mar 4, 2018

@testerez Published fixed version. probably some time is needed to ensure that bug is not here anymore.

wclr on Feb 17, 2018

Yes, I see the repetitive error now on a big file, I will try to figure out how to fix it.

wclr on Feb 16, 2018

Same issue here. MacOS too.

testerez on Feb 16, 2018

Ok, I’ve implemented @aikoven proposal for watching a compiled file, and removed timeout, so you may try how it works for you.

wclr on May 26, 2018

I don’t actually think that checking file existence takes many CPU resources

Not the checking itself, but since there’s no sleep, the loop may iterate a lot of times before the file is created.

How about this: have a separate script that waits for a file via e.g. fs.watch(), then execute it with a blocking call to child_process.execFileSync()

aikoven on Apr 12, 2018

Here’s the error message:

Error: Could not require /opt/app/src/index.ts, compiled path:/tmp/.ts-node/compiled/src_index_ts_77422fb8b702bc764b30afe40edb019b94fe582fc7d48fc5f171fbf1d04ef6b9.js
    at compile (/tmp/ts-node-dev-hook-1523337655467.js:30:13)
    at Module.m._compile (/tmp/ts-node-dev-hook-1523337655467.js:44:36)
    at Module._extensions..js (module.js:660:10)
    at require.extensions.(anonymous function) (/tmp/ts-node-dev-hook-1523337655467.js:46:14)
    at Object.nodeDevHook [as .ts] (/opt/app/node_modules/ts-node-dev/lib/hook.js:61:7)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:501:12)
    at Function.Module._load (module.js:493:3)
    at Module.require (module.js:593:17)
    at require (internal/module.js:11:18)
[ERROR] 05:21:02 Error: Could not require /opt/app/src/index.ts, compiled path:/tmp/.ts-node/compiled/src_index_ts_77422fb8b702bc764b30afe40edb019b94fe582fc7d48fc5f171fbf1d04ef6b9.js

aikoven on Apr 10, 2018

Increasing the user watches limit did the work. It’s working normally now. Thank you

Sorry for bothering you with my errors. I saw this issue and I kinda automatically thought that it’s related.

petrdsvoboda on Mar 7, 2018

Hm, I probably know where the issue, it just requires more tricks to workaround, stay tuned.

wclr on Feb 17, 2018

I published new version check it, please.

wclr on Feb 16, 2018

As stated it works fine for me on Windows 10 but not for another colleague on Mac OS X. So that seems to be one common factor.

Other env details:

Node 8.9
yarn 1.3.2
ts-node 4.1.0
ts-node-dev 1.0.0-pre.11
typescript 2.7.1
macOS High Sierra v10.13.3

Koslun on Feb 14, 2018

You may try the latest published version, maybe something will change, maybe not. )

wclr on Feb 12, 2018