The command "npm run build -- --prod" exited with code 1 error

Question

I'm developing an Asp.Net Core 2 and Angular 5 project in visual studio 2017.

When I'm going to publish my project then the error 'The command "npm run build -- --prod" exited with code 1' show in error list window.
I created the project with Angular CLI in ASP.NET Core 2 Angular template link and everything was fine and the project run and publish correctly.
After a while, I don't know what exactly happens that cause the project doesn't publish.

In the npm-debug.log file

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'run',
1 verbose cli   'build',
1 verbose cli   '--',
1 verbose cli   '--prod' ]
2 info using [email protected]
3 info using [email protected]
4 verbose stack Error: ENOENT: no such file or directory, open 'C:\Project\JWS\JWSApplication\package.json'
4 verbose stack     at Error (native)
5 verbose cwd C:\Project\JWS\JWSApplication
6 error Windows_NT 10.0.15063
7 error argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "build" "--" "--prod"
8 error node v6.10.3
9 error npm  v3.10.10
10 error path C:\Project\JWS\JWSApplication\package.json
11 error code ENOENT
12 error errno -4058
13 error syscall open
14 error enoent ENOENT: no such file or directory, open 'C:\Project\JWS\JWSApplication\package.json'
15 error enoent ENOENT: no such file or directory, open 'C:\Project\JWS\JWSApplication\package.json'
15 error enoent This is most likely not a problem with npm itself
15 error enoent and is related to npm not being able to find a file.
16 verbose exit [ -4058, true ]

Solution 1

Perform any of the following options as long as there is an error

1. For passing an argument to build command:

   change 'npm run build -- --prod' to 'npm run build --prod' in the .csproj file

2. Open ClientApp folder and Update project angular-cli with this CMD command:

   npm install --save-dev @angular/cli@latest

3. Update visual studio NodeJS and npm from:

   Tools > Options > Projects and Solutions > Web Package Management > External Web Tools

If NodeJS and npm aren't installed on your environment path Add NodeJS and npm folder to the top of the list else move $(path) to the top of the list

.

Thank @Praveen Kumar and @Yerkon

Solution 2

Got same error, my environment:

.NET Core 2.1 RC-1
Angular v5.2.4
NPM v5.7.1
Node v8.11.2

And nothing mentioned above did not helped. Simple go to ".\ClientApp" //Angula-CLI project and run

npm run build

then you will see real errors - so that means simple you have some errors in code, so fix angular UI code and it will build fine :).

Solution 3

Run:

npm run build:prod -- --prod

to see the actual error/errors that caused your build to fail.

NOTE: Notice the command has prod twice.

Solution 4

if deploying on netlify, use below command instead of npm run build while in site setting build & deploy.

CI= npm run build

Solution 5

Error: The command "npm install" exited with code 1

Add environment variable, right click this PC

• Go to Properties
• Go to Advance tab
• Click environment variable
• In User variable section click new, Enter variable name "Path" and value C:\Users\User\AppData\Roaming\npm
• One more - In User variable section click new, Enter variable name "Path" and value C:\Program Files\nodejs

If Path variable already there, then you can edit that variable add new path(value) by ; separation.

View more solutions

Comments

[Iman Bahrampour]

I updated from visual studio 'External WEB Tools' section

[Sunny Tambi]

Wasted a lot of time looking here and there. You had the perfect solution. Thanks.

[Setrákus Ra]

I also encountered the same issue and step 1 worked for me. Thanks, this saves me much time.

[Bluesight]

VS 2017, 15.8.1, .net core 2 Angular Template: still had to apply thix fix. Thanks! Don't get it why Microsoft won't fix it.

[Carlos E]

This was my real problem, relying on VS to make build don't point really where code problems are on angular Framework that only pops up when running ng build --prod

[Mr. Developer]

Where do you put this "npm install --save-dev @angular/cli@latest" ? i've open .angular-cli.json but i didn't find the npm install string.

[Iman Bahrampour]

@Mr.Developer. Open CMD in the clientApp folder and run the npm install... command.

[Mr. Developer]

@ImanBahrampour i've alredy done it, but on the .angular-cli.json i don't find this string npm install --save-dev @angular/cli@latest

[Iman Bahrampour]

@Mr.Developer. the 'install --save-dev @angular/cli@latest' is a cmd command and update angular CLI of a project. the angular-cli.json is about project configuration and 'install --save-dev @angular/cli@latest' command does not exist there.

[Iman Bahrampour]

The question is about "npm run build -- --prod" error not real errors.

[2nyacomputer]

Before insert any answer it's better to read the question carefully. The 'npm run build -- --prod' exist in the .csproj file and doesn't related to 'npm run build'. you must fix the 'npm run build -- --prod' error.

[Iman Bahrampour]

As mentioned in the accepted answer, the 'npm run build --prod' fix the problem.

[Marcin Janowski]

At my end it worked when I updated to VS 2019 and changed csproj to 'npm run build --prod'. Surprisingly it did not help when I was running on VS 2017.

[guppy81]

be aware, when removing the first two -- from npm run build -- --prod! The additional -- are telling npm that anything after this should be appended directly to the command itself as stated here: link

[Sahib Khan]

VS19 adding --prod at the end of the command. So if the script says npm run build --prod, it will become npm run build -- --prod

[Chathura Liyanage]

change 'npm run build -- --prod' to 'npm run build --prod' in the .csproj file : this part was enough for me. Super Thanks