Vuejs build set-up from scratch with webpack, vue-loader and hot reload

Vuejs build set-up from scratch with webpack, vue-loader and hot reload

VueJS is most loved JavaScript see library now. In this article, I will disclose to you how to construct a venture utilizing VueJS, hot module substitution, webpack and the whole vue biological community totally starting with no outside help so you can see precisely how your application functions. hear we will show you Vuejs build setup from scratch with webpack, vue-loader and hot reload

Introduction

we have been creating in JavaScript for quite a while now, from around 2007. we cherish rakish, I adore respond and coal. we would see be able to the inspirations and the brightness behind each of them. Be that as it may, the one library which genuinely starts rapture and energy in me is VueJS. It’s not the best answer for each issue and each individual – yet me (and a considerable measure of other individuals) truly observe the incentive in this library.

There’s a general pattern in JavaScript, particularly in the respond group to compose libraries to do one thing admirably, and to enable the client to stick the pieces together in a way that fit best. While this is awesome, and works for a huge amount of individuals, it can be somewhat overpowering for learners. I was roused by this article to compose this instructional exercise. There are huge amounts of respond standards out there – some are obsolete, some have issues, and some essentially don’t work, which can be overpowering to a learner.

At the season of composing this article, the designer of Vue is chipping away at an “official starter unit” including a platform CLI to produce another venture. This is phenomenal on the grounds that it gives an unmistakable and very much kept up beginning stage.

Still, there are a few advantages to setting up your fabricate framework without any preparation yourself:

  • Your extend prerequisites might be marginally unique in relation to what the standard creator may build.
  • If something breaks or on the off chance that you require something new, such as relying upon another preprocessor or toolchain, you can acquire it without breaking whatever is left of the build.
  • The standard may utilize things and libraries you essentially don’t need.

All things considered, standards and platforms – particularly those distributed by the writers who truly comprehend the libraries are a precious learning asset and you would pick be able to up a great deal of valuable tips, and after you read the code you may utilize their standard as-may be.

Do take note of that I am taking in a couple of new things en route myself, and this article may be refreshed regularly.

Before we begin

I’ve last checked these guidelines chipping away at Dec 28th 2015. I have tried this on Ubuntu Linux on most recent stable adaptation of Node.js (5.3).

Any summons to keep running on the order line will be recorded this way


$ ls                           <- Run this in root directory of our project
$ (public/) ls                 <- Run this in the 'public' directory

Face 1: Creating basic structure

We should make a venture called "myapp" beginning with a void organizer. This will be the root envelope for every single future direction.


$ mkdir myapp

$ cd myapp/

Make a package.json in the root envelope. So far we have no conditions.

{
"name": "myapp",
"version": "0.0.1",
"description": "My app",
"dependencies": {
},
"devDependencies": {
},
"author": "You"
}

Make a index.html in the root envelope. This will be the genuine html served to the program.


<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Vue Example at onlinecode</title>
</head>
<body>
<h3></h3>
<script src="dist/build.js"></script>
</body>
</html>

Notice two things about this html record:

  • It utilizes dist/build.js as a JS document which doesn’t exist yet.
  • It has a piece which will be filled in by vue later.

Make an organizer src and include a record src/main.js:

import Vue from 'vue'

new Vue({
el: 'body',
data: {
message: "Hello Vuejs"
}
})

What’s more, we have the skeleton of a fundamental vuejs application, however regardless it should be fabricated.

Face 2: Basic webpack build

Make a document called webpack.config.js in your root organizer. Add this to your document:

module.exports = {
// This is the "main" file which should include all other modules
entry: './src/main.js',
// Where should the compiled file go?
output: {
// To the `dist` folder
path: './dist',
// With the filename `build.js` so it's dist/build.js
filename: 'build.js'
},
module: {
// Special compilation rules
loaders: [
{
// Ask webpack to check: If this file ends with .js, then apply some transforms
test: /\.js$/,
// Transform it with babel
loader: 'babel',
// don't transform node_modules folder (which don't need to be compiled)
exclude: /node_modules/
}
]
}
}

Make a record .babelrc in your root envelope. Babel is the device used to change over cutting edge ES6 into display day JavaScript. It should be designed with presets. Vue requires es2015 preset (which bolsters the following rendition of EcmaScript/JavaScript) and stage-0 (I have no clue what this does).

{
"presets": ["es2015", "stage-0"],
"plugins": ["transform-runtime"]
}

Introduce the webpack order line apparatus:


$ npm install -g webpack

Introduce nearby libraries required to work (as dev conditions). To do this you would add be able to this to the devDependencies Face of your package.json.


"babel-core": "^6.1.2",
"babel-loader": "^6.1.0",
"babel-plugin-transform-runtime": "^6.1.2",
"babel-preset-es2015": "^6.1.2",
"babel-preset-stage-0": "^6.1.2",
"babel-runtime": "^5.8.0",
"webpack": "^1.12.2",

Once you’re finished refreshing the package.json, run:


$ npm install

Note: I reccomend investigating the official Vue starter packs for the best bolstered renditions, on the grounds that occasionally the most recent forms of libraries won’t not be straightforwardly upheld.

Also, last, yet not the slightest, introduce the vuejs library to be really required into your principle code. You need to place this in conditions.


$ npm install --save vue

Presently you would build be able to your application with WebPack. In your root registry, run:


$ webpack

You should see some yield like:


Hash: 6568e32467dc12c8aeeb
Version: webpack 1.12.9
Time: 743ms
Asset    Size  Chunks             Chunk Names
build.js  246 kB       0  [emitted]  main
+ 3 hidden modules

What’s more, open index.html in your program. On the off chance that you see “Hi Vue” in your program, at that point everything is great up until this point. Congrats, you have an essential working VueJS extend.

Face 3: vue-loader and .vue files

Presently we get to a standout amongst the most amazing Faces of vuejs: Building segments with .vue documents.

Refresh your index.html to resemble this:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Vue Example</title>
</head>
<body>
<app></app>
<script src="dist/build.js"></script>
</body>
</html>

Note that now, rather than building a basic ViewModel on the root body hub, we’re mounting a part called application which will mounted to

Change your main.js to this code:

import Vue from 'vue'
import App from './app.vue'

new Vue({
el: 'body',
components: { App }
})

Presently, take note of that we’re bringing another part called App from a different document called app.vue and including it into the occurrence mounted to the body component.

We will make a record called src/app.vue now. Add this to the app.vue code:

<template>
<div class="message">{{ msg }}</div>
</template>

<script>
export default {
data () {
return {
msg: 'Hello from vue-loader!'
}
}
}
</script>

<style>
.message {
color: blue;
}
</style>

There’s a great deal occurring in this document: We’re setting a style, characterizing the conduct in the script and characterizing the HTML layout in format. To figure out how segments function, you would check be able to the vuejs docs.

Presently how about we run webpack again and see what happens:

Hash: c71cc00f645706203ac4
Version: webpack 1.12.9
Time: 749ms
Asset    Size  Chunks             Chunk Names
build.js  246 kB       0  [emitted]  main
[3] ./src/app.vue 0 bytes [built] [failed]
+ 3 hidden modules

ERROR in ./src/app.vue
Module parse failed: /home/anirudh/work/misc/vue-scaffold/example/src/app.vue Line 1: Unexpected token <
You may need an appropriate loader to handle this file type.
| <template>
| <div class="message">{{ msg }}</div>
| </template>
@ ./src/main.js 7:11-31

Webpack doesn’t know how to deal with the .vue records which is another linguistic structure. Fortunately this is very simple to settle. Open up your webpack config, and refresh it to this:

module.exports = {
entry: './src/main.js',
output: {
path: './dist',
publicPath: 'dist/',
filename: 'build.js'
},
module: {
loaders: [
{
test: /\.js$/,
loader: 'babel',
exclude: /node_modules/
},
{
test: /\.vue$/,
loader: 'vue'
}
]
},
vue: {
loaders: {
js: 'babel'
}
}
}

Presently add the accompanying things to your package.json in the devDependencies segment:

"css-loader": "^0.23.0",
"style-loader": "^0.13.0",
"vue-loader": "^7.3.0",
"vue-html-loader": "^1.0.0",

Run npm introduce to bring the new libraries

$ npm install

At last, run webpack once more, and you should see something like this:

Hash: 740a1d3c85161f03a0cf
Version: webpack 1.12.9
Time: 1355ms
Asset    Size  Chunks             Chunk Names
build.js  258 kB       0  [emitted]  main
+ 11 hidden modules

In the event that you open your program, you should see the content “Hi from vue-loader” in blue content. This implies the style, HTML and javascript assembled appropriately.

Alright, so we made it this far.

Darcy

Face 4: Hot Module Replacement/Hot Reload

Hot Module Replacement or Hot Reload is the "hottest" new innovation in the JavaScript world. This enables you to spare your JavaScript document and have the part refresh progressively.

Essentially this is what happens:

  • You compose an app.
  • You stack this application in the program. What’s more, play around with this app.
  • The application has a “state” which is utilized by Vue to render the screen.

Suppose you need to roll out a fast improvement or fix a little bug. You need to reload the page, and do every one of the means to convey it to the first state.

With hot reload, the procedure works differently:

  • You open the application, convey it to a given state.
  • You refresh the source code and spare it.
  • Webpack identifies the change. It re-orders just the module that has been changed
  • Webpack sends the code and changes over-the-wire live utilizing something like websockets to the browser.
  • Vue gets the new model and hot-patches your code, and re-renders the application while keeping the state intact.

The initial step here is that we have to utilize WebPack’s dev server and can’t open it as a html document in the program. Initially, refresh the devDependencies in your package.json with the accompanying:

"vue-hot-reload-api": "^1.2.0",

What’s more, run the accompanying:

$ npm install
$ npm install -g webpack-dev-server
$ webpack-dev-server --inline --hot

When you run webpack-dev-server you’ll see an entirely enormous yield:

http://localhost:8080/

webpack result is served from/dist/

content is served from /home/anirudh/work/misc/vue-scaffold/example

Hash: ef5ed1df9062de968cb6
Version: webpack 1.12.9
Time: 1773ms
Asset    Size  Chunks             Chunk Names
build.js  511 kB       0  [emitted]  main
chunk    {0} build.js (main) 465 kB [rendered]
[0] multi main 52 bytes {0} [built]
[2] (webpack)-dev-server/client?http://localhost:8080 2.48 kB {0} [built]
[3] (webpack)/~/url/url.js 22.3 kB {0} [built]
[... omitted for brevity ...]
[85] ./~/vue-html-loader!./~/vue-loader/lib/selector.js?type=template&index=0!./src/app.vue 58 bytes {0} [built]
[86] ./~/vue-hot-reload-api/index.js 5.62 kB {0} [built]

webpack: package is presently VALID.

Open up http://localhost:8080 in your program, and you should see a similar yield. In any case, this doesn’t generally flaunt how marvelous Vue’s HMR is.

Rather, change your src/app.vue to this:

<template>
<div class="message">Value is: {{ count }}</div>
<a href="#" @click.prevent="increment">Increment</a>
</template>

<script>
export default {
data () {
return {
count: 0
}
},
methods: {
increment () {
this.count ++;
}
}
}
</script>

<style>
</style>

Reload http://localhost:8080 and you should see a counter with a catch to increase. In the event that you click it, the counter goes up.

Presently, make a refresh to the code. You would change be able to the style, change the name of the catch or even how the addition work acts. On the off chance that you spare it, the part refreshes yet the counter esteem remains the same. This is a major, major ordeal.

What’s next?

This is in no way, shape or form everything that you requirement for your venture, however this is all the vue-particular information you may require. Be that as it may, before you begin fabricating the real application here are things you invest some energy googling and setting up:

Separate dev/creation build

You will need a different minified work for creation. You would see be able to how vuejs proposes it in the vue-loader-case webpack config

Note that moving your webpack.config into a different envelope than your root organizer will oblige you to determine other order line configs.

Testing

Testing is past the extent of this instructional exercise, and you’re trying system will rely on upon your application itself. See the vue-loader-case test case for some straightforward code on the best way to test it.

Working with pictures, static records, and CSS

Your application will soon require custom CSS records and pictures – and webpack would help be able to you with suitable loaders like document loader, url-loader and enhance the improvement work process.

Linting

You can arrange eslint to be run straightforwardly from webpack utilizing the eslint-loader. The vue-loader-illustration sets it up pleasantly, and even has a decent .eslintrc which is ensured to work with eslint

Credits

  • vue-loader-case which I utilized as a source of perspective to learn
  • header: planzeichnen through cc-by-2.0

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