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So I know that was a very brief introduction to two lines of code and of JavaScript.

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But we're now moving on to more important things, things that are relevant to my SQL.

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And the first thing we'll do is talk about a package called Faker.

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So the first question you might have is what is a package?

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And basically Node comes with thousands and thousands of libraries.

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You might have heard them called or packages or modules code that other people have written that we

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can include inside of our application.

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Really simply all I have to do is say install faker, which is a package we're going to use, but we'll

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use another package later called Express or we'll use one called MySQL.

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And all I have to say is install my SQL install faker and there are thousands of them out there, like

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I said.

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And that's one of the biggest strengths of Node is that it has a huge library of all these packages

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so that you don't have to do everything yourself.

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You can go and get some help by including somebody else's package.

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So the way we do it is through something called NPM node package manager and to install faker, which

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don't worry, I'll explain what faker is.

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This is all we have to type into our terminal and PM install faker.

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But before we go there, let me show you what Faker is.

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So Faker is a package that there's a bunch of different versions of it.

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There's I think the original one was for Ruby, I'm not positive, but there's Faker kind of implementations

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for other languages, including JavaScript.

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And what it does is it really helps us.

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It streamlines the process of generating fake data.

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So we're going to use it because we want to start off with a bunch of fake data in our database.

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I don't know if you noticed, I had 518 519 users in my database.

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I did not enter those manually.

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And they are they're all unique.

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They have a different, unique email address.

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I did not generate those myself.

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So we're going to use Faker to do that.

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So Faker is very simple.

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I can say things like faker, dot address, dot county and it will give me a random county name and

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it has hundreds of them.

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Or I could say fake or let's say name dot job descriptor and it will give me a random job descriptor.

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So there's tons of things in here.

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Phone numbers, random numbers, file names, colors, avatars, emails, usernames, domains, passwords,

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like so many things that we could pick from credit card, fake credit card numbers, account numbers,

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you get it, hopefully.

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So back in cloud nine.

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Now, what I'm going to do is actually empty this file entirely.

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App JS You can make a new file if you'd like, and now I'm going to install Faker so we can use it.

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So this video, I probably could have done a better job explaining.

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This is about two things one faker, but on a higher level packages in general and how you use them.

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So this is the workflow for using a package.

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We type NPM, install the name of the package and hit enter and it will take a second.

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And that on its own installs a package.

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You'll notice I have a new folder here called Node Modules inside.

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There's all the faker code, all this stuff.

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So all that is here now.

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I just had to type a single line.

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It's pretty awesome.

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Now in my app, guys, I can't just start using it immediately.

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I can't just say fake or dot email or something.

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I first have to tell this file I want to use fake or I have to include it or import it and it's very

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easy.

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I'm just going to say var faker equals require faker.

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So this right here, it's a variable.

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I can call this anything I could say, my faker.

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I'm going to call it faker standard.

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And this is the part that I can't change.

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This has to be faker.

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So this is going to go find a package that I've installed in node modules with the name Faker and then

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save it into this variable.

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So now whenever I use the word faker referring to this variable, I actually am referring to the package.

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So then we can do things with it.

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So we could do something like this faker, internet, dot email and that will generate things like this

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or this or this or a 23 Simone Walsh Aubry underscore dot tree numbers.

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We've got Hotmail and Gmail and Yahoo!

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So this would be a pain if we were doing this ourselves to come up with 500 individual emails.

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And then the other thing I'll show you is we're going to use it for dates, so I'll be able to say fake

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or date and this is important past.

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So we don't want to have any future dates.

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Basically, we want to start with 500 users in our database who have signed up at some point in the

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past.

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So it will generate things like this.

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So we also don't want to have to do that ourselves.

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So let's start with fake internet dot email and we need parentheses at the end.

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Sort of like my SQL.

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It's a function we're telling it to execute if I just do it on its own and I run the file now, which

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is app JS.

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Nothing happens.

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Well, that's a lie.

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It does happen.

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This runs, but we don't see the result.

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And that's because we need to print it so we can do console.log like this.

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There we go.

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Now, if I run it again, I see.

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Okay.

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We get a new email.

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Jared.

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Leila.

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Leila.

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Trevor.

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Whatever.

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So we're getting these fake emails.

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We're going to use that along with.

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I copy this and do faker dot.

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Date dot passed.

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Which is the other thing I showed you.

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We're going to use those two.

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To generate a 500 user.

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So basically this is one user.

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So it's kind of fun to play around with Faker.

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But do you know dot hacker, dot abbreviation or finance, dot currency symbol or Bitcoin address,

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let's do address and then city.

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So we could do we'll get rid of these too for now console dot log add faker dot address, dot city.

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And if we save and run that.

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There we go.

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Roberto ville.

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And if we try it again, we get something different.

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New Alexandrov fought.

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So that's the basics of faker.

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I will show you.

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If so, if you already know JavaScript.

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Skip this section.

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But I just want to show a bit more sort of the extended version of crash course in Node, how we can

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string things together and make more complex logic.

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So let's say I wanted to generate a complete address.

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So I wanted a number and the street and a city.

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Let's start with those three.

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So Faker has ways of doing that.

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We've got what do we have?

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Street name and street address.

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So let's start with that.

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We've got faker address, Dot Street address.

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Let's start there and run this again.

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Okay, so there we go.

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That's working.

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Then we've got the city, right.

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And then let's say we wanted to do a state as well.

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If we're working in the US.

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Perfect.

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So here's a complete address right now.

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Every time let's say I want three different addresses.

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I would have to copy these lines like that.

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Which is not the end of the world.

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Right.

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We can copy lines, but there's a much better way of doing this.

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So what we could do instead is create what's known as a function.

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And I'll just call this generate address.

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Think of this as a way of reusing our code.

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And the syntax looks like this function a name, parentheses, and then brackets and whatever we put

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in those brackets will be run every time I refer back to generate address.

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So on its own, if I just save this.

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Nothing is going to happen when I hit.

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Oops.

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When I hit save, now I go down here to Node.

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We don't get anything.

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What I have to do is now call this function just like this.

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Now.

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It's saying, okay, is there something called generate address?

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Oh, yes, there is.

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All right.

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Well, let's run the three lines inside of it.

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So if I ran this three times now it's only three lines to do that.

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And we get three different addresses.

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Of course, we might want to compile these together so that they're not on three separate lines.

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Maybe you want commas between them.

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We could really improve it.

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But the point is that that's basically how you define a function, and we'll be working with functions

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later on.

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But for now, that's all I'm going to show.

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So that's the basics of faker.

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The basics of packages will be installing other packages as well as the basics of node.