error while installing angular/cli using npm

Question

When I tried to install angular cli using this command

npm install -g @angular/cli

I got below mentioned error

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 
(node_modules\@angular\cli\node_modules\chokidar\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY:  Unsupported platform for 
[email protected]: wanted {"os":"darwin","arch":"any"} 
(current: {"os":"win32","arch":"x64"}) 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.1.2 (node_modules\@angular\cli\node_modules\watchpack\node_modules\chokidar\node_modules\fsevents): 
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.1.2 (node_modules\@angular\cli\node_modules\webpack-dev-server\node_modules\chokidar\node_modules\fsevents): 
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) 
npm WARN [email protected] requires a peer of ajv@^6.0.0 but none was installed. 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\@angular\cli\node_modules\node-sass): 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] postinstall: `node scripts/build.js 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

any idea whats the issue?

my node version is 6.9.2 and npm version is 3.10.9

Update Node to version 8.9 or higher. That is a newer requirement. Then try this all again. — R. Richards
– R. Richards, Commented May 31, 2018 at 10:09
yes it was indeed about the node version, i uninstalled node and installed v8.11.1, and it worked. thanks @R.Richards — prady
– prady, Commented May 31, 2018 at 10:19

Bruno Bieri · Accepted Answer · 2019-04-24 16:08:08Z

10

Try using the below command from your project folder:

npm audit fix

If it still shows it has fixed only few of the vulnerabilities, then use the below command

npm audit fix --force

Screen shot of the command that I used in my machine

edited Apr 24, 2019 at 16:08

Bruno Bieri

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answered Jul 30, 2018 at 12:48

Seetharaman Mohan

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DarkSuniuM · Accepted Answer · 2018-10-13 12:35:24Z

5

This warning told everything:

Unsupported platform for [email protected]: **wanted** {"os":"darwin","arch":"any"} (**current**: {"os":"win32","arch":"x64"})

Only unix-based systems use fsevents, and You are using Windows!

edited Oct 13, 2018 at 12:35

DarkSuniuM

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answered Oct 13, 2018 at 11:55

Mirko Jelic

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1 Comment

Bruno Bieri Over a year ago

I know that only unix-based systems are supported but I don't need the warning in all my builds. Do you know a way on windows to get rid of this warning?

Harshal Yeole · Accepted Answer · 2018-05-31 09:17:21Z

0

First of all, all the things you have posted are Warnings and not errors.

It means the npm has skipped the dependencies.

This would be solved if you update the npm version to the latest, use this command:

npm i -g npm@latest

// use sudo if you get permission error.

and try to install again.

Hope this helps.

answered May 31, 2018 at 9:17

Harshal Yeole

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7 Comments

prady Over a year ago

after successfully updating npm, when i do try to install angular/cli again i get below mentioned warnings

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\@angular\cli\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})  + @angular/[email protected] updated 1 package in 44.551s

and ng -v returns unrecognizable command

Harshal Yeole Over a year ago

Whats your npm version now?

prady Over a year ago

npm version now is 6.1.0

Harshal Yeole Over a year ago

Try this npm i -f -g npm@latest

prady Over a year ago

still same warnings and couldn't recognize ng

|

Book Of Zeus · Accepted Answer · 2019-02-19 03:36:39Z

0

$ npm install -g @angular/cli
C:\Users\Asus\Desktop\ng -> C:\Users\Asus\Desktop\node_modules\@angular\cli\bin\ng
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\@angular\cli\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

+ @angular/[email protected]
added 295 packages from 179 contributors in 120.715s

edited Feb 19, 2019 at 3:36

Book Of Zeus

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answered Feb 19, 2019 at 3:13

james

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