All Questions
Tagged with npm package.json
1,628
questions
5393
votes
22
answers
1.9m
views
What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix.
Why are ...
- 91.3k
2923
votes
16
answers
1.0m
views
What's the difference between dependencies, devDependencies, and peerDependencies in NPM package.json file?
This documentation answers my question very poorly. I didn't understand those explanations. Can someone say in simpler words? Maybe with examples if it's hard to choose simple words?
Also added ...
- 47k
930
votes
34
answers
577k
views
Is there a way to get the version from the 'package.json' file in Node.js code?
Is there a way to get the version set in the package.json file in a Node.js application? I would want something like this
var port = process.env.PORT || 3000
app.listen port
console.log "Express ...
- 9,611
674
votes
14
answers
413k
views
How to find unused packages in package.json?
Is there a way to determine if you have packages in your package.json file that are no longer needed?
For instance, when trying out a package and later commenting or deleting code, but forgetting to ...
- 8,121
620
votes
22
answers
1.0m
views
How to set environment variables from within package.json?
How to set some environment variables from within package.json to be used with npm start like commands?
Here's what I currently have in my package.json:
{
...
"scripts": {
"help": "tagove ...
- 8,960
497
votes
5
answers
148k
views
How do I decide whether @types/* goes into `dependencies` or `devDependencies`?
I use TypeScript 2 in my project. I'd like to use some js library, but also typings for that library. I can install types with simple npm install @types/some-library. I'm not sure if I should --save ...
- 6,206
366
votes
46
answers
574k
views
Field 'browser' doesn't contain a valid alias configuration
I've started using webpack2 (to be precise, v2.3.2) and after re-creating my config I keep running into an issue I can't seem to solve I get (sorry in advance for ugly dump):
ERROR in ./src/main.js
...
- 31.3k
339
votes
8
answers
135k
views
Move a module from devDependencies to dependencies in npm package.json
Is there any short command to move a module from devDependencies to dependencies in package.json?
I find myself always doing this:
npm uninstall <module_name> --save-dev
npm install <...
- 6,459
299
votes
13
answers
360k
views
npm install private github repositories by dependency in package.json
I'm trying to install github private repository by npm that includes other private github repositories as dependency.
Have tried a lot of ways and posts but none is working. Here is what i'm doing :
...
- 8,022
296
votes
8
answers
201k
views
How to use private Github repo as npm dependency
How do I list a private Github repo as a "dependency" in package.json? I tried npm's Github URLs syntaxes like ryanve/example, but doing npm install in the package folder gives "could not install" ...
- 51.8k
287
votes
4
answers
173k
views
Do I need both package-lock.json and package.json?
After updating my NPM to the latest version (from 3.X to 5.2.0) and running npm install on an existing project, I get an auto-created package-lock.json file.
I can tell package-lock.json gives me an ...
- 4,155
211
votes
2
answers
125k
views
What is the "module" package.json field for?
I've seen some npm packages (vue for example) have a module field in their package.json.
But module is not included in the package.json documentation - is this a convention of some kind? Is there ...
- 51.8k
188
votes
15
answers
224k
views
Module not found: Error: Can't resolve 'core-js/es6'
I've got a problem with my build process in relation to my React app.
I always get the following error:
Module not found: Error: Can't resolve 'core-js/es6'
if I use this in a polyfill.js:
import '...
- 2,092
178
votes
7
answers
201k
views
How to install only "devDependencies" using npm
I am trying to install ONLY the "devDependencies" listed in my package.json file. But none of the following commands work as I expect. All of the following commands install the production dependencies ...
- 1,803
178
votes
27
answers
209k
views
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './lib/tokenize' is not defined by "exports" in the package.json of a module in node_modules
This is a React web app. When I run
npm start
This error occurred
> [email protected] start
> react-scripts start
node:internal/modules/cjs/loader:488
throw e;
^
Error [...
- 1,990
178
votes
17
answers
111k
views
How to npm publish specific folder but as package root
I have a project that include a gulp task for building and packaging the sources and release in a directory called dist. My goal is publish it as a npm package, but only my dist folder. The npm ...
- 2,658
177
votes
5
answers
177k
views
npm equivalent of yarn resolutions?
Is there an npm equivalent of the yarn resolutions functionality? There is no mention of it in the npm package.json docs.
For example, I want to install [email protected] and one of its dependencies (@lerna/...
- 3,268
139
votes
9
answers
108k
views
npm update does not do anything
When I execute this code in my application folder where the package.json is located:
npm update or npm update --save-dev it does not do anything.
But when I do npm outdated is shows many outdated ...
- 21k
128
votes
51
answers
309k
views
Error: EPERM: operation not permitted, unlink 'D:\Sources\**\node_modules\fsevents\node_modules\abbrev\package.json'
I just updated npm to 5.4.0.
Now, Whenever I want install a npm package I get the following error:
D:\Sources\DownloadCms\Md.Download\Web.Angular>npm install mds.angular.datetimepicker@latest --...
127
votes
5
answers
222k
views
What is the cause of "npm WARN EBADENGINE"?
When generating a package-lock.json file using npm install, I get this error:
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE package: '[email protected]',
npm WARN EBADENGINE required: { ...
- 1,988
127
votes
11
answers
157k
views
How to use environment variables in package.json
Because we don't want sensitive data in the project code, including the package.json file, using environment variables would be a logical choice in my opinion.
Example package.json:
"...
- 1,436
121
votes
2
answers
137k
views
How to specify the path of `package.json` to npm?
I use npm scripts to build my project. I'd like to be able to run the scripts from a different directory. That is, instead of doing the following:
cd project;
npm run build;
cd ..
...I'd like to ...
- 8,893
117
votes
2
answers
144k
views
Node engine 8.x or 10.x in package.json
I tried to specify the node engine in a package.json to accept both 8 and 10 version.
I tried to type this:
"engines": {
"node": "8.x|10.x"
},
But running yarn results in:
The engine "node" is ...
- 31.4k
117
votes
3
answers
53k
views
What is `"dev" true` in package-lock.json for?
What does "dev" true means in package-lock.json file?
In my case it is automatically updated when I perform npm operations.
How can we remove it?
- 1,422
112
votes
3
answers
92k
views
Change working directory for npm scripts
Q: Is it possible to change the the context in which npm runs scripts?
What I want to is the following:
"scripts": {
"test": "gulp mocha",
"pre-install": "./deps/2.7/cpython/configure --prefix=...
- 6,631
108
votes
3
answers
165k
views
What does "npm audit fix" exactly do?
npm audit fix is intended to automatically upgrade / fix vulnerabilities in npm packages. However, I haven't found out what it exactly does to fix those vulnerabilities.
I assumed that npm audit fix ...
- 4,798
107
votes
3
answers
31k
views
Make `npm install --save` add a strict version to package.json
When you run npm install --save somepackage, it usually adds something like this into package.json:
"dependencies": {
"somepackage": "^2.1.0"
}
Because the version is prepended with a caret(^), ...
- 10.1k
99
votes
1
answer
42k
views
How do you use the 'files' and 'directories' properties in package.json?
If a package.json has a files prop, and/or a directories prop:
"files": [
"./src/assets/fonts/"
],
"directories": {
"assets:": "./src/assets"
}
What are some ways to make use of ...
- 2,257
95
votes
7
answers
97k
views
Root directory in package.json
My question concerns an existing library that I wish to publish as an NPM module. The library is already in use, and currently required via the local file system.
How can I specify the root directory ...
- 11.9k
94
votes
2
answers
50k
views
How can I reference package version in npm script?
I want to reference my package version in a npm script so I can show current version in the app.
Something like
{
"name": "bla",
"version": "1.0.0",
"author": "bla bla",
"scripts": {
"...
- 7,558
87
votes
10
answers
177k
views
How to use package.json scripts to copy files with specific file extension
I am trying out npm as a build tool.
One stumbling block I have encountered is that I need to copy javascript files from one folder to another. The source folder contains typescript files, javascript ...
- 1,122
84
votes
1
answer
91k
views
npm: How to just run postinstall?
In my node.js project, how could I just run the postinstall script, without running install before?
FYI, this is my package.json :
{
"name": "gestionclientjs",
...,
"...
- 1,302
72
votes
4
answers
86k
views
How to set env var for .npmrc use
I need a module in my project to download a private npm package. To accomplish this, I am using a .npmrc file to supply a read-only token needed to download the package. To keep the token supplied by ...
- 3,080
66
votes
4
answers
36k
views
npm package.json OS specific script
I would like to create a package.json build script that executes slightly different set of commands when run from Windows, Linux, Mac.
The problem is that I cannot find a way to put it in package....
- 2,922
61
votes
4
answers
56k
views
Is the "files" property necessary in package.json?
It looks like the package will include all files (that are not ignored), even if the package.json has no "files" array.
Is that property necessary?
- 19.9k
56
votes
11
answers
41k
views
How can I display the current app version from package.json to the user using Vite?
With create-react-app one could use process.env.REACT_APP_VERSION for this.
Is there an equivalent in Vite?
- 2,935
55
votes
12
answers
78k
views
Pass command line -- argument to child script in Yarn
I have a package.json that looks similar to this:
"scripts": {
"dev": "cross-env BABEL_ENV=client webpack --config webpack/client.development.js && yarn dev:stub-server | cross-env ...
- 779
55
votes
6
answers
44k
views
Import from subfolder of npm package
I've been working on creating a small library of React components for use in several other projects. I am publishing the package internally (using a private GitHub repository) and then including in ...
- 2,112
53
votes
3
answers
43k
views
What is the correct way of adding `react` as a dependency in the `package.json` of a reusable components library?
I built a few reusable React components, and I want to know the correct way to add react as a dependency in my package.json for the purpose of publishing to the npm registry.
I am currently doing this:...
- 23.9k
53
votes
5
answers
41k
views
Is there a way to specify angular version with the ng new command
I am creating a new Angular project and would like all the Angular dependencies to be from the stable 7th version. However, it seems that while running the ng new app command the Angular always ...
- 5,001
50
votes
4
answers
108k
views
Pass command line args to npm scripts in package.json
I have the below scripts in my package.json:
"scripts": {
"vumper": "node node_modules/vumper/index.js",
"format": "prettier --single-quote -width=80 --write package.json"
},
The 'vumper' ...
- 5,797
48
votes
4
answers
99k
views
Cannot find module 'prettier'
I updated all packages but still getting this error after running npm run serve:
Module build failed (from ./node_modules/eslint-loader/index.js):
Error: Cannot find module 'prettier' Occurred ...
- 5,852
47
votes
3
answers
19k
views
How to list all the commands available in package.json?
A package.json can have lot of commands and common ones are npm start, npm test but there are generally more commands.
Is there a way to list all the commands?
Currently I use less package.json but ...
- 3,864
45
votes
2
answers
18k
views
Is node-sass a dev or a production dependency on React projects?
In variaous React documentation I see it being added as a prod dependency but I'm not understanding why. Shouldn't it be a devDependecy since SASS only gets compiled during development and when pushed ...
user967451
43
votes
4
answers
17k
views
What naming convention do I use for scripts in package.json?
In package.json I have this script name with two words lint and fix. How should I make a right name?
There are options:
lowerCamelCase - lintFix
UpperCamelCase - LintFix
snake_case - lint_fix
kebab-...
- 5,432
43
votes
4
answers
19k
views
Github Action different between release created and published
since Github Releases are actually a Git Tags, I want to auto-upgrade my package.json version when there is a new Release (and tag), with Github Action.
I know I need to trigger a job on: release, ...
- 5,618
43
votes
3
answers
23k
views
What exactly does "next" mean in package.json dependencies?
What exactly does next mean in package.json dependencies?
"dependencies": {
"react": "^15.4.2",
"react-dom": "^15.4.2",
"react-router-dom": "next"
}
- 7,464
41
votes
6
answers
62k
views
Solve having more than one copy of React in the same app
I'm developing a React module locally. For that, I'm linking my module using npm link.
The module is imported successfully but hooks are failing inside the module. It's throwing the following error:
...
- 6,612
39
votes
4
answers
27k
views
how to execute powershell ps1 scripts from package.json "scripts"?
How can I execute PowerShell ps1 scripts from package.json "scripts"?
I know how to set up a basic script in package.json "scripts". For example with the following configuration, I can exec npm run ...
- 1,805
39
votes
5
answers
32k
views
Do yarn workspaces work with npm, too?
I checked out a repo which uses yarn instead of npm as build tool.
in the package.json, it defines workspaces to deal with multiple sub-projects:
{
"workspaces": [
"packages/*"
],
"...
- 5,107