what is the package.json code example

Example 1: what is package.json

metadata specific to the project
a web application, Node.js module, or even just a plain JavaScirpt library. 
identifies the project and acts as a baseline for users and contributors 
to get information about the project.
contains a collection of any given project's dependencies

Example 2: package.json version

$(node -pe 'require(\"./package.json\")[\"version\"]')