npm install npm@latest -gnode_modules that are extraneous packages (that are not listed in package.json)npm prune
Before running the above command, npm list --depth 0 showed several packages as extraneous.
Extraneous are packages that are not listed in dependencies or devDependencies but installed in node_modules)+-- gulp@4.0.2 extraneous
+-- gulp-sass@4.1.0 extraneous
`-- moment@2.27.0npm install  /  npm i
Shows current version of npm
npm --version  / npm -v
Creates package.json file with default valuesnpm init --yes  /  npm init -y
Installs package moment npm install moment --save  /  npm i moment -S
Installs package lodash for dev environment npm install lodash --save-dev  /  npm i moment -D
Installs package live-server globally so that other apps can use itnpm install --global live-server  /  npm i -g live-server
Other shortcuts - https://docs.npmjs.com/misc/configlive-server did not work
browserify did not work
The problem solved after running this command in Windows PowerShell (open as an administrator)Set-ExecutionPolicy -Scope "CurrentUser" -ExecutionPolicy "Unrestricted"npm install -g browserify
If our app main JS file is app.js, then running the command will create one bundle.js filebrowserify app.js > bundle.jsnpm install -g live-server
After installing, the package should be started by running the command in consolelive-servercomposer.json composer initcomposer update vendor/package vendor/package2composer search keyword