19

I am trying to use parallelshell with my node project on Windows to run two processes at the same time.

Here is the scripts section of my package.json file:

"scripts": {
"start": "npm run watch:all",
"test": "echo \"Error: no test specified\" && exit 1",
"lite": "lite-server",
"scss": "node-sass -o css/ css/",
"watch:scss": "onchange \"css/*.scss\" -- npm run scss",
"watch:all": "parallelshell \"npm run watch:scss\" \"npm run lite\""

}

When I run the command npm start I get this error log:

TypeError [ERR_INVALID_ARG_TYPE]: The "options.cwd" property must be of type string. Received type function
at normalizeSpawnArguments (child_process.js:420:11)
at spawn (child_process.js:522:38)
at C:\Users\Daniel\Documents\development\online_classes\coursera_uhk_web_dev\Bootstrap4\conFusion\node_modules\parallelshell\index.js:104:17
at Array.forEach (<anonymous>)
at Object.<anonymous> (C:\Users\Daniel\Documents\development\online_classes\coursera_uhk_web_dev\Bootstrap4\conFusion\node_modules\parallelshell\index.js:100:6)
at Module._compile (internal/modules/cjs/loader.js:702:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
at Module.load (internal/modules/cjs/loader.js:612:32)
at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
at Function.Module._load (internal/modules/cjs/loader.js:543:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! confusion@1.0.0 watch:all: `parallelshell "npm run watch:scss" "npm run lite"`

npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the confusion@1.0.0 watch:all script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Is there something wrong with my syntax? I can run the commands npm run watch:scss and npm run lite individually and they work fine, but I am not able to run the parallelshell command.

Thank you!

dpberry178
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    The solution which worked for me is described here: https://stackoverflow.com/a/53467253/6650315 – Klaus Nov 18 '19 at 16:35

10 Answers10

38

Try downgrading the parallelshell version from 3.0.2 to 3.0.1

According to the statement, it is just a temporary fix.

https://github.com/darkguy2008/parallelshell/issues/57

Below is the command line syntax to for downgrading parallelshell:

sudo npm uninstall --save-dev parallelshell@3.0.2

sudo npm install --save-dev parallelshell@3.0.1

It worked for me.

Hope this helps and let us know.

Prags
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Sridhar C
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7

parallelshell is giving active errors at every use. Instead of parallelshell the alternative here is to use npm-run-all dev-dependency.

install npm-run-all

npm install --save-dev npm-run-all

then make active changes in scripts of package.json shown below.

 "scripts": {
    "start": "npm run dev",
    "test": "echo \"Error: no test specified\" && exit 1",
    "lite": "lite-server",
    "scss": "node-sass -o css/ css/",
    "watch:scss": "onchange \"css/*.scss\" -- npm run scss",
    "dev": "npm-run-all -p watch:scss lite"
  }
Rakesh Chary Bangaroj
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4

All correct to be run on Windows OS. Just simply try to install parallelshell@3.0.1:

npm install --save-dev parallelshell@3.0.1

and then call npm start again.

Sansei
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2

This is due to incompatibility of the npm with the version of parallelshell.
Try downgrading it to 3.0.1 by using:

npm i --save-dev parallelshell@3.0.1

Worked for me 100%.

סטנלי גרונן
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Debanjan Paul
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1

change a line in your node_modules/parallelshell/index.js:105 file

from: cwd: process.versions.node < '8.0.0' ? process.cwd : process.cwd(),

to: cwd: parseInt(process.versions.node) < 8 ? process.cwd : process.cwd(),

reference: Problem running parallelshell Nodejs script

Janica Liz De Guzman
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0

It looks correct to me, instead of escaping your double quotes you could use single quotes inside the double quotes.

Not sure if it will make a difference.

"watch:all": "parallelshell 'npm run watch:scss' 'npm run lite'"
Maurice van Cooten
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0

Is different for MAC and Windows machines. User single quotes on MAC and "\ "\ on windows. Also downgrade to parallelshell to 3.0.1 to work with \"

Tiago Pereira
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0

I changed to use concurrently package, and it works well for me on win64, the method mentioned is in the post.

I just simply use
"watch:all": "concurrently \"npm run watch:scss\" \"npm run lite\""
to replace
"watch:all": "parallelshell \"npm run watch:scss\" \"npm run lite\""

Huang Qinlai
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0

This is a common issue can not be fixed using npm audit fix. All you can do is to copy the actual index.js file of parallelshell into your node_modules directory.

So to do it below are the instructions:

1. Go to https://raw.githubusercontent.com/darkguy2008/parallelshell/master/index.js

2. Copy the content here.

3. Now go to the directory of your project, it may be something like /project/node_modules/parallelshell/index.js

4. Inside the index.js replace the contents with the one you copied from the link in Step 1.

5. Save the file and exit.

Hope this fix will work for you.

Abhishek Kumar
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  • Please edit your answer. Instead of linking to some code, post the differences between `node_modules/parallelshell/index.js` and your link here. After that put the link at the bottom as a reference. The link may change or break one day. Another suggestion is to use a permalink like this one (linking to the version of index.js at a certain commit): https://raw.githubusercontent.com/darkguy2008/parallelshell/8fd83e217a015b2c8c8e33ff1e836db02b7bfe8e/index.js This link should always display the same content rather than the latest version in the master branch. – Dimitar Nestorov May 05 '20 at 18:00
0

If someone is still running into errors after altering the index.js or after demoting to 3.0.1 version, a better alternative would be using npm-run-all

Sushanth Nukala
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