Questions:

Why would you want to run JavaScript code outside of a browser?

Many reasons - node.js allows you to use JavaScript outside of the browser by building a node app.

What is the difference between a module and a package?

A package is a file or directory described by a package.json A module is a file or directory in the node_modules directory that can be loaded by the Node.js require() function.

All packages are also modules. However, because a module may have a package.json, a module can be a package, but not all modules are packages.

What does the node package manager do?

The node package manager puts modules in place so that node can find them, and manages dependency conflicts intelligently

Provide code snippets showing 3 different ways to export a function from a node module

Export Function

module.exports = function (content) { 
    console.log(content);
};

Export Function as a Class

module.exports = function (var1, var2) {
    this.var1 = var1;
    this.var2 = var2;
    this.allData = function () { 
        return this.var1 + ' ' + this.var2;
    }
}

Load Module from a Folder

var example = require('./folder/file.js');

(Adapted from https://www.tutorialsteacher.com/nodejs/nodejs-module-exports)

Definitions

Term	Definition
ecosystem	A managed lifecycle and dependency injection for your application components (https://www.npmjs.com/package/ecosystem)
Node.js	An open source server environment (https://www.w3schools.com/nodejs/nodejs_intro.asp)
V8 Engine	Google’s open source high-performance JavaScript and WebAssembly engine - used in Chrome and Node.js (https://v8.dev/)
module	Any file or directory in the node_modules directory that can be loaded by the Node.js require() function
package	A file or directory that is described by a package.json
node package manager(npm)	World’s largest software registry - a way to reuse code from other developers and to share your code with other developers
server	A device that accepts and responds to requests made over a network - the server serves the client (https://www.computerhope.com/jargon/s/server.htm)
environment	The state of a computer, determined by a combination of software, basic hardware, and which programs are running (https://www.computerhope.com/jargon/e/environm.htm#:~:text=The%20term%20environment%20refers%20to,utilizing%20the%20Windows%20operating%20system.)
interpreter	A method of converting source code into machine code - interpreters translate programs one statement at a time and do not generate intermediate object code. They are memory efficient, but comparatively slower than compilers (https://www.programiz.com/article/difference-compiler-interpreter)
compiler	A method of converting source code into machine code - compilers translate programs as a whole after scanning the entire program. They do generate intermediate object code, making them less memory efficient, but comparatively faster than interpreters

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