Prettier code formatter
eslintrc file with the following contents: ConclusionĪutomated code formatting against sane settings saves a lot of grief and time. Step 3: Create the Prettier and ESLint Configuration filesĬreate an.
Prettier code formatter install#
Install the following Visual Studio Code Extensions: yarn add -dev -exact prettier yarn add -dev eslint-plugin-prettier Step 2: Install the Prettier and ESLint VS Code Extensions The plugin allows Prettier violations to be reported as ESLint errors. You will need to install the Prettier package and then the ESLint Prettier plugin. Note: You will need to install ESLint if you are not using Create React App Step 1: Install Prettier and the ESLint Plugin The errors will only be shown in Visual Studio Code. Please note that Create React App will not show any Prettier errors in the browser console or terminal output. The instructions shouldn’t be too different if you are using NPM or another React/JavaScript environment. This tutorial assumes that you are using Create React App, Yarn and Visual Studio Code. By using an automated and opinionated tool everyone’s personal opinion is taken out of the equation and developers can just get on with developing and no longer have to waste time formatting their code. Prettier is an “opinionated code formatter” which has some very sensible defaults and can be used to ensure that all committed code looks the same. For example I used to think that JSX was an abomination, but I quickly came to realise that it is actually a thing of beauty. Thankfully human beings are incredibly adaptive and will quickly “get used” to using a new style of tool if they don’t have a choice.
The meeting ends up being a wash, people are frustrated and “Frank” ends up getting a special pass to prefix his private fields with my_ and use tabs while everyone else uses _ and spaces. It starts off with good intentions and good progress is initially made, but then a roadblock is encountered trying to come to an agreement on a private field prefix or to use spaces instead of tabs. A frequent scenario seems to be that a developer meeting is held to come up with a company coding standard. Now, if you go back to our JavaScript file and mess up the formatting a little bit and save the file, we can see that our code is beautifully formatted and we can move on to develop another feature.Having consistent code formatting and style is an important part of reducing cognitive load when working with others or when jumping around between projects. Inside of settings, you can type in format and click on format on save. There is also a keyboard shortcut over here. You can find settings under code preferences and settings. If you wanted to, we can enable Prettier to format our code every single time we save the file. Now, we have the beautifully formatted code.
We can see the keyboard shortcut over here as well. Right click, and select format selection. Select the piece of code that we would like to format. I am going to search for Prettier, which is the first result. First, click on the extension stuff over here. In order to do that, we're going to install Prettier. What if we copy this code from somewhere else, for instance from CircularFLO and did up like this? We'd like to be able to format this code automatically so then we can we can move onto implementing more interesting features. If I save that, we can see the result over here. If I press tab, we're going to end up with all of the beautiful schema that we didn't really have to write. I am going to put in the tags TODO inside each one of them. In order to make feature of them, we need to multiply li tag by three. This is going to have three TODO, which are going to be of type li. Next, we're going to assign it a class name of list. Next, we need to define the sibling to this header, which is going to be a list. I am going to put "Welcome to egghead" over here. If we would like to provide the title for this header, we need to wrap it in curly brackets. In fact, we are going to be able to implement all of that in a single line. Emmet is so much more powerful than that. I can go ahead and type my titles over here. If I start typing main followed by h1, we can see over here that this is the html that we're going to get as soon as I press tab. In order to implement that quickly, we're going to use Emmet which is built into Visual Studio code. Inside of it, an h1 with a title "Welcome to egghead," and deal with a list with the class name of list with three TODO items. Instructor: We have a following idea for our component.