1 00:00:01,270 --> 00:00:02,680 ‫So now that you know the 2 00:00:02,680 --> 00:00:05,850 ‫absolute fundamentals of Node.JS., 3 00:00:05,850 --> 00:00:07,820 ‫let's take the rest of the section 4 00:00:07,820 --> 00:00:10,350 ‫to talk a little bit about npm, 5 00:00:10,350 --> 00:00:12,713 ‫so the node package manager. 6 00:00:14,390 --> 00:00:17,490 ‫So the node package manager is a command line 7 00:00:17,490 --> 00:00:20,200 ‫interface app that automatically comes 8 00:00:20,200 --> 00:00:22,520 ‫included with Node JS 9 00:00:22,520 --> 00:00:24,770 ‫in which we use to install and manage 10 00:00:24,770 --> 00:00:26,870 ‫Open Source packages. 11 00:00:26,870 --> 00:00:29,350 ‫Now these packages that I just mentioned, 12 00:00:29,350 --> 00:00:32,020 ‫they usually come from the package repository 13 00:00:32,020 --> 00:00:33,467 ‫that is also npm. 14 00:00:34,390 --> 00:00:37,250 ‫So at npm.js, you can take a look 15 00:00:37,250 --> 00:00:39,880 ‫at all the modules or packages 16 00:00:39,880 --> 00:00:43,530 ‫that are included in the npm repository. 17 00:00:43,530 --> 00:00:47,100 ‫So npm is actually both the command line interface app 18 00:00:47,100 --> 00:00:49,650 ‫that we use to manage the packages 19 00:00:49,650 --> 00:00:51,873 ‫and also the repository itself. 20 00:00:53,323 --> 00:00:55,050 ‫And actually, it's the largest software 21 00:00:55,050 --> 00:00:56,700 ‫registry in the world, 22 00:00:56,700 --> 00:00:59,530 ‫no matter what language we're talking about. 23 00:00:59,530 --> 00:01:01,130 ‫And by the time of this recording, 24 00:01:01,130 --> 00:01:04,210 ‫it has about 800,000 packages. 25 00:01:04,210 --> 00:01:06,880 ‫So sometime, in the near future 26 00:01:06,880 --> 00:01:09,940 ‫it will probably have over a million packages 27 00:01:09,940 --> 00:01:11,800 ‫here on npm. 28 00:01:11,800 --> 00:01:14,450 ‫So, let's for example, ‫search for express, 29 00:01:14,450 --> 00:01:17,250 ‫which is the node framework that we're going to use 30 00:01:17,250 --> 00:01:19,870 ‫throughout most of the rest of the course. 31 00:01:19,870 --> 00:01:21,940 ‫And so, for example, 32 00:01:21,940 --> 00:01:23,620 ‫you can then click on it, 33 00:01:23,620 --> 00:01:25,430 ‫and here you have all the information 34 00:01:25,430 --> 00:01:28,160 ‫about each of the modules. 35 00:01:28,160 --> 00:01:29,890 ‫So you can see that, for example, 36 00:01:29,890 --> 00:01:33,550 ‫this one is download almost eight million times 37 00:01:33,550 --> 00:01:35,410 ‫in the last week. 38 00:01:35,410 --> 00:01:38,803 ‫So you see that it's a hugely popular package. 39 00:01:40,180 --> 00:01:43,350 ‫Then, here, usually you have some documentation. 40 00:01:43,350 --> 00:01:45,870 ‫But for now, that doesn't really matter. 41 00:01:45,870 --> 00:01:50,514 ‫So for now, we're just interested in what npm actually is. 42 00:01:50,514 --> 00:01:53,260 ‫Probably, you have used npm, yourself, 43 00:01:53,260 --> 00:01:56,870 ‫before when working on front-end development. 44 00:01:56,870 --> 00:02:00,580 ‫Because these days, npm is actually not just used 45 00:02:00,580 --> 00:02:01,860 ‫for node development, 46 00:02:01,860 --> 00:02:05,130 ‫but really across the entire Java's stack. 47 00:02:05,130 --> 00:02:07,920 ‫So, for example, if you'll search for react, 48 00:02:07,920 --> 00:02:09,950 ‫it's also gonna be here. 49 00:02:09,950 --> 00:02:11,890 ‫So really, all these popular libraries 50 00:02:11,890 --> 00:02:12,860 ‫and frameworks, 51 00:02:12,860 --> 00:02:16,813 ‫they are all really on the npm registry. 52 00:02:18,490 --> 00:02:23,490 ‫Basically, npmjs.com is where all these packages are hosted. 53 00:02:24,150 --> 00:02:27,150 ‫Now, about the command line interface, itself, 54 00:02:27,150 --> 00:02:31,220 ‫it actually comes already pre-installed with NodeJS. 55 00:02:31,220 --> 00:02:33,190 ‫So, let's now actually start using it, 56 00:02:33,190 --> 00:02:35,400 ‫and go back to our project. 57 00:02:35,400 --> 00:02:38,550 ‫So here we have still our terminal open, 58 00:02:38,550 --> 00:02:41,000 ‫but I'm gonna quit now this process here, 59 00:02:41,000 --> 00:02:45,160 ‫so I hit control c and then clear the terminal. 60 00:02:45,160 --> 00:02:49,850 ‫Npm is a software that we basically use to manage 61 00:02:49,850 --> 00:02:52,710 ‫the third party Open Source packages that 62 00:02:52,710 --> 00:02:56,390 ‫we choose to include and use in our project. 63 00:02:56,390 --> 00:02:58,190 ‫And the first thing that they usually do 64 00:02:58,190 --> 00:03:00,400 ‫whenever we start a new project, 65 00:03:00,400 --> 00:03:02,550 ‫is to start with npm init. 66 00:03:04,030 --> 00:03:08,570 ‫So we use npm as the command and then init. 67 00:03:08,570 --> 00:03:12,020 ‫And this will basically create a package.jason file. 68 00:03:12,020 --> 00:03:16,110 ‫Which is kind of a configuration file of our project 69 00:03:16,110 --> 00:03:19,780 ‫where all kinds of data about the project is stored. 70 00:03:19,780 --> 00:03:23,190 ‫We're gonna see more about that once that is finished. 71 00:03:23,190 --> 00:03:26,670 ‫So npm init is now asking us a bunch of questions 72 00:03:26,670 --> 00:03:28,510 ‫as you see down here. 73 00:03:28,510 --> 00:03:30,160 ‫And, maybe, if you're not seeing it, 74 00:03:30,160 --> 00:03:32,630 ‫I will increase this a bit. 75 00:03:32,630 --> 00:03:34,760 ‫So, first thing that we need to specify 76 00:03:34,760 --> 00:03:36,400 ‫is the package name. 77 00:03:36,400 --> 00:03:38,253 ‫And this one is called node farm. 78 00:03:40,440 --> 00:03:43,790 ‫So we need to use a url friendly name here, 79 00:03:43,790 --> 00:03:45,490 ‫so that's why I have the hyphen. 80 00:03:45,490 --> 00:03:47,580 ‫And what you see here is the suggested name, 81 00:03:47,580 --> 00:03:50,020 ‫but I don't want the one in there, 82 00:03:50,020 --> 00:03:52,630 ‫so I just retype node farm here. 83 00:03:52,630 --> 00:03:54,110 ‫Then we have the version, 84 00:03:54,110 --> 00:03:56,247 ‫so we can just hit return here on this one. 85 00:03:56,247 --> 00:04:01,247 ‫And in the description, learning node js. 86 00:04:01,470 --> 00:04:03,940 ‫The entry point is the next.js, 87 00:04:03,940 --> 00:04:05,840 ‫but again, this doesn't really matter. 88 00:04:05,840 --> 00:04:07,420 ‫We don't have any test command, 89 00:04:07,420 --> 00:04:09,053 ‫so just hit return again. 90 00:04:10,040 --> 00:04:11,810 ‫Now we'll get keywords, 91 00:04:11,810 --> 00:04:13,460 ‫doesn't really matter again. 92 00:04:13,460 --> 00:04:14,913 ‫The author is me. 93 00:04:15,840 --> 00:04:18,400 ‫You can put your own name, of course, 94 00:04:18,400 --> 00:04:21,470 ‫and license and so, 95 00:04:21,470 --> 00:04:25,240 ‫one that's okay, to confirm that this is the file 96 00:04:25,240 --> 00:04:26,073 ‫that we want. 97 00:04:27,260 --> 00:04:30,473 ‫Actually, it created it right away here on this left side. 98 00:04:32,660 --> 00:04:34,193 ‫Bring it down again here. 99 00:04:37,350 --> 00:04:40,370 ‫So, indeed, this is our package Jason file, 100 00:04:40,370 --> 00:04:42,180 ‫with this very basic information 101 00:04:42,180 --> 00:04:44,200 ‫about the project for now. 102 00:04:44,200 --> 00:04:46,780 ‫But there is a lot of stuff that can be added 103 00:04:46,780 --> 00:04:51,290 ‫to this file and we will do so later in another project. 104 00:04:51,290 --> 00:04:54,750 ‫Also, right in the next video which is where we're gonna 105 00:04:54,750 --> 00:04:56,260 ‫installing packages. 106 00:04:56,260 --> 00:04:59,610 ‫And these packages are then also registered here 107 00:04:59,610 --> 00:05:03,300 ‫in this file so that we can keep tract of all the packages 108 00:05:03,300 --> 00:05:04,623 ‫that we're actually using. 109 00:05:05,660 --> 00:05:09,380 ‫So, in our next video we're then going to finally install 110 00:05:09,380 --> 00:05:11,263 ‫some real packages here.