--watch not working on file rename?

[Rechdan]

I tried to rename a file and got these errors:

(node:20668) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "from" argument must be of type string. Received undefined
    at validateString (internal/validators.js:120:11)
    at Object.relative (path.js:437:5)
    at findTarget (...\node_modules\copy-and-watch\index.js:40:33)
    at FSWatcher.copy (...\node_modules\copy-and-watch\index.js:60:14)
    at FSWatcher.emit (events.js:315:20)
    at FSWatcher.emitWithAll (...\node_modules\chokidar\index.js:524:8)
    at FSWatcher._emit (...\node_modules\chokidar\index.js:616:8)
    at NodeFsHandler._handleFile (...\node_modules\chokidar\lib\nodefs-handler.js:400:14)
    at NodeFsHandler._addToNodeFs (...\node_modules\chokidar\lib\nodefs-handler.js:628:21)
(node:20668) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:20668) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
internal/validators.js:120
    throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "from" argument must be of type string. Received undefined
    at validateString (internal/validators.js:120:11)
    at Object.relative (path.js:437:5)
    at findTarget (...\node_modules\copy-and-watch\index.js:40:33)
    at FSWatcher.remove (...\node_modules\copy-and-watch\index.js:70:14)
    at FSWatcher.emit (events.js:315:20)
    at ...\node_modules\chokidar\index.js:565:16
    at Map.forEach (<anonymous>)
    at Timeout._onTimeout (...\node_modules\chokidar\index.js:564:30)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7) {
  code: 'ERR_INVALID_ARG_TYPE'
}

[zont]

Cannot reproduce.

Maybe you try to rename file in destination folder?

[Rechdan]

Maybe thats a problem with my node version?

node -v
v12.18.4

And here is the command I used:

copy-and-watch --clean ./src/public/**/*.* ./dist/public

[NoNameProvided]

This is not restricted for file rename, simple content updates doesn't work either on Windows. I have encountered the same error, this is most likely due to different separator between MacOS and Windows. After adding a console.log to the findTarget function where the error is thrown the following can be seen:

[build:copy] {
[build:copy]   target: 'build',
[build:copy]   parents: [ 'src/assets' ],
[build:copy]   parent: 'src/assets',     
[build:copy]   from: 'src/assets/styles'
[build:copy] }
[build:copy] {
[build:copy]   target: 'build',
[build:copy]   parents: [ 'src/assets' ],
[build:copy]   parent: 'src/assets',
[build:copy]   from: 'src/assets/styles/main.css'
[build:copy] }
[build:copy] [COPY] src/assets/styles/main.css to build\styles\main.css
[build:copy] [WATCH] src\assets\**\*
[build:copy] {
[build:copy]   target: 'build',
[build:copy]   parents: [ 'src/assets' ],
[build:copy]   parent: undefined,
[build:copy]   from: 'src\\assets\\styles\\main.css'
[build:copy] }
[build:copy] (node:8544) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "from" argument must be of type string. Received undefined
[build:copy]     at validateString (internal/validators.js:121:11)
[build:copy]     at Object.relative (path.js:437:5)
[build:copy]     at findTarget (C:\Users\attil\code\spreadmonitor\alteo\website\node_modules\copy-and-watch\index.js:41:33)
[build:copy]     at FSWatcher.copy (C:\Users\attil\code\spreadmonitor\alteo\website\node_modules\copy-and-watch\index.js:61:14)
[build:copy]     at FSWatcher.emit (events.js:314:20)
[build:copy]     at FSWatcher.emitWithAll (C:\Users\attil\code\spreadmonitor\alteo\website\node_modules\chokidar\index.js:524:8)
[build:copy]     at FSWatcher._emit (C:\Users\attil\code\spreadmonitor\alteo\website\node_modules\chokidar\index.js:616:8)
[build:copy]     at listener (C:\Users\attil\code\spreadmonitor\alteo\website\node_modules\chokidar\lib\nodefs-handler.js:370:20)
[build:copy] (Use `node --trace-warnings ...` to show where the warning was created)
[build:copy] (node:8544) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not 
handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)[build:copy] (node:8544) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.    

The first two print is from the startup, where the from parameter is not escaped, but then on update I assume the from parameter comes from the watcher library used, what escapes it Windows style so consequent checks will always fail.

A super dirty quick fix to showcase the problem:

const findTarget = from => {
  const parent = parents
    .filter(p => {
      console.log({ p, fromreplaced: from.replace(/\\/g, '/'), from })
      return from.replace(/\\/g, '/').indexOf(p) >= 0;
    })
    .sort()
    .reverse()[0];
  console.log({ target, parents, parent, from });
  return path.join(target, path.relative(parent, from));
};

Replace can be used to fix this, but proably would be better to use path.seprator from Node in path handling to made it platform agnostic.

[nicearma]

any news about this problem? i'm working in windows and the initial copy works fine but the watch shows the error and end the execution For the workaround if I understand I have to replace the internal code of findTarget

[NoNameProvided]

For the workaround if I understand I have to replace the internal code of findTarget

Yes, you can use https://github.com/ds300/patch-package to apply the fix automatically while the fix doesn't land in this repo.

[ba32107]

same issue on linux

[AmitDigga]

Currently using this with other package run-when-changed

npx run-when-changed --watch "FolderToWatch/**/*" --exec 'npx copy-and-watch ../FolderToWatch/**/* outputFolder/'