javascript - `npm build` doesn't run the script named "build" in package.json - Stack Overflow

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For a new module I'm trying to use npm build without gulp / Grunt / other specialised build tools.

"scripts": {
  "build": "node build.js"
},

My build.js is simply

console.log('Hello')

However, running

npm build

Simply exits without printing anything, with a status of 0.

Running:

npm install

Also does all the normal things, but does not run build.js either.

How can I make npm run my build script?

Edit: even simple bash commands don't seem to work, eg

"scripts": {
    "build": "touch TESTFILE"
},

Doesn't make a file with that name.

For a new module I'm trying to use npm build without gulp / Grunt / other specialised build tools.

"scripts": {
  "build": "node build.js"
},

My build.js is simply

console.log('Hello')

However, running

npm build

Simply exits without printing anything, with a status of 0.

Running:

npm install

Also does all the normal things, but does not run build.js either.

How can I make npm run my build script?

Edit: even simple bash commands don't seem to work, eg

"scripts": {
    "build": "touch TESTFILE"
},

Doesn't make a file with that name.

• javascript
• node.js
• build
• npm

Share Improve this question Follow edited Jun 24, 2016 at 10:57 Flimm 150k4848 gold badges273273 silver badges285285 bronze badges asked Apr 29, 2015 at 9:33 mikemaccanamikemaccana 123k110110 gold badges425425 silver badges529529 bronze badges 2

• Workaround: use install instead. – Zaz Commented Oct 19, 2016 at 0:33
• 1 This is basically a huge and unintuitive annoyance of NPM and is one of the reasons I continue to use Yarn. With yarn, I can run any custom script just as a parameter i.e yarn storybook will run the storybook script. In NPM I have to do npm run storybook and on top of that, if I wish to pass any parameters through npm, it requires -- before it, so when comparing yarn storybook --ci to npm run storybook -- --ci, it's a no-brainer to me. – Emobe Commented May 31, 2019 at 13:56

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6 Answers 6

Sorted by: Reset to default 283

Unfortunately npm build is already an internal command, as described in the docs:

This is the plumbing command called by npm link and npm install. It should generally not be called directly.

Because that command already exists, it always shadows over your "build": "node build.js".

The fully-qualified way to run your own script is with run-script or its alias run:

$ npm run build

npm start and others are the short-hand way, but is only an option when an existing npm command doesn't shadow it, like npm build does.

---

For posterity (as others have mentioned) npm build is used by npm to build native C/C++ Node addons using node-gyp.

The script named as "build" in package.json is not special in any way. The only way to get it to run is to call:

npm run-script build

There are some names which are called automatically by npm, but "build" is not one of them. The full list is:

• prepublish, publish, postpublish
• preinstall, install, postinstall
• preuninstall, uninstall, postuninstall
• preversion, version, postversion
• pretest, test, posttest
• prestop, stop, poststop
• prestart, start, poststart
• prerestart, restart, postrestart
• preCUSTOM and postCUSTOM for custom script names.

OK, to run a build on its own, use:

npm run-script build

Npm build expects

A folder containing a package.json file in its root

Try using npm scripts in your package.json, like the classic npm start

I had a problem with npm run build not printing anything. ended up using npm run build --verbose to get the output I needed.

Don't forget to check the directory

1. First, im assuming you have made a folder named "React" and opened in VS code.
2. Then, you have done..(supposing) "npx create-react-app test"
3. after installing all the packages and files, CHECK "package.json" file, if it exists then well sorted, if not, then re-install.
4. After that, check the directory, it should be in "test". To do that, run command "cd test"
5. Then, run "npm run start"
6. Then, run "npm run build". And, all set ;)

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