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Questions tagged [npm-scripts]

The "scripts" property of the package.json file supported by npm.

The "scripts" property of the file is a dictionary containing script commands that are run at various times in the lifecycle of your package. The key is the lifecycle event, and the value is the command to run at that point.

supports the "scripts" property of the package.json file, for the following scripts:

  • prepublish: Run BEFORE the package is packed and published, as well as on local npm install without any arguments. (See below)
  • prepare: Run both BEFORE the package is packed and published, and on local npm install without any arguments (See below). This is run AFTER prepublish, but BEFORE prepublishOnly.
  • prepublishOnly: Run BEFORE the package is prepared and packed, ONLY on npm publish. (See below.)
  • prepack: run BEFORE a tarball is packed (on npm pack, npm publish, and when installing git dependencies)
  • postpack: Run AFTER the tarball has been generated and moved to its final destination.
  • publish, postpublish: Run AFTER the package is published.
  • preinstall: Run BEFORE the package is installed
  • install, postinstall: Run AFTER the package is installed.
  • preuninstall, uninstall: Run BEFORE the package is uninstalled.
  • postuninstall: Run AFTER the package is uninstalled.
  • preversion: Run BEFORE bumping the package version.
  • version: Run AFTER bumping the package version, but BEFORE commit.
  • postversion: Run AFTER bumping the package version, and AFTER commit.
  • pretest, test, posttest: Run by the npm test command.
  • prestop, stop, poststop: Run by the npm stop command.
  • prestart, start, poststart: Run by the npm start command.
  • prerestart, restart, postrestart: Run by the npm restart command. Note: npm restart will run the stop and start scripts if no restart script is provided.
  • preshrinkwrap, shrinkwrap, postshrinkwrap: Run by the npm shrinkwrap command.

Additionally, arbitrary scripts can be executed by running npm run-script <stage>. Pre and post commands with matching names will be run for those as well (e.g. premyscript, myscript, postmyscript). Scripts from dependencies can be run with npm explore <pkg> -- npm run <stage>.

To find more information :

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Dayvvo
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I built a monorepo using Lerna and Yarn workspaces. Everything works fine but everytime I install a new dependency on a package (let's call him A) using: yarn add Yarn adds it and then triggers the install script of all the packages…
Erazihel
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NPM Run Build Always Builds Production and Never Development

On an inherited project I have, I am trying to get the build command to build a version other than Production. I have attempted to change the alias in the script section in package.json to pass in extra variables such as --dev and…
ΩmegaMan
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Babel with babel-preset-env seems to ignore browserslist config

I’m testing Babel with browserslist in an npm script. Here is my current package.json, in which Babel is doing what I expect: { "name": "npm-scripts-igloo", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { …
Hunsecker
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How can NPM scripts use my current working directory (when in nested subfolder)

It's good that I can run NPM scripts not only from the project root but also from the subfolders. However, with constraint that it can't tell my current working path ($PWD). Let's say there's a command like this: "scripts": { ... "pwd": "echo…
Allen
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Deno: How to substitute npm scripts (package.json)

Since it is not necessary to have package.json file with deno, how can I as a developer have a similar experience just as we have with npm scripts in package.json?
CeamKrier
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sh: SET: command not found in `npm start`

I'm trying to run a react project . and after I run command : npm start , it gave me an error: sh: SET: command not found npm ERR! file sh npm ERR! code ELIFECYCLE npm ERR! errno ENOENT npm ERR! syscall spawn npm ERR! materials-trace@0.1.0 start:…
Neko
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How to push to github with custom commit message with npm scripts?

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relidon
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Leon Gaban
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Is it possible to suppress NPM's echo of the commands it is running?

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jcollum
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babel polyfill being included, but forEach still doesn't work in IE11 on NodeLists

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Robert_QSS
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Can you set aliases for npm scripts inside package.json?

I have a project written in Typescript When developing Locally: ts-node is installed as a dev-dependency, The commands are to start: "ts-node src/index" to init: "ts-node bin/init" to init db: "ts-node bin/database-init" to migrate db:…
lonewarrior556
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Distributing NPM Scripts With A Package For Use By Project Installing It

I have moved all my linting configuration and related packages/plugins/presets (for prettier, stylelint, eslint, commitlint) out to an npm package. I then use this package in multiple projects and extend or merge over the config into local…
Undistraction
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PzYon
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Fraser
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