PCES JavaScript code style convention

first make sure that VS Code extension ESLint is installed

create your project folder for example myProjectFolder

You'll first need to install ESLint:

incide your project folder terminal run

$ npm i eslint --save-dev

next run

$ node_modules\.bin\eslint --init

than choose
> Answer questions about your style

then "Y" on
? Are you using ECMAScript 6 features? (y/N) Y

then "Y" on 
? Are you using ES6 modules? (y/N) Y

than switch on Browser and Node
? Where will your code run?
 (*) Browser
>(*) Node

then "Y" on 
? Do you use CommonJS? (y/N) Y

then "Y" on 
? Do you use JSX? (y/N) Y

than "Y" on
? Do you use React (y/N) Y

than "Spaces" on 
? What style of indentation do you use?
  Tabs
> Spaces

than "Double" on 
? What quotes do you use for strings? (Use arrow keys)
> Double
  Single

than "Windows" on
? What line endings do you use?
  Unix
> Windows

than "Y" on
? Do you require semicolons? (Y/n) Y

than "JavaScript" on 
? What format do you want your config file to be in? (Use arrow keys)
> JavaScript
  YAML
  JSON

Next, install eslint-plugin-pces:

$ npm install eslint-plugin-pces --save-dev

Note: If you installed ESLint globally (using the -g flag) then you must also install eslint-plugin-pces globally.

Add pces to the plugins section of your .eslintrc configuration file. You can omit the eslint-plugin- prefix:

{
    "plugins": [
        "pces"
    ]
}

Then configure the plugin recommended under the extends section.

{
    "extends": [
        "plugin:pces/recommended"
    ]
}

all rules are enabled as errors.

but if you want only specific rules, then configure the rules you want to use under the rules section.

Then configure the rules you want to use under the rules section.

{
    "rules": {
        "pces/rule-name": 2
    }
}

• pces/def-func-dec-in-arg

function declaration - fuction testFunct (pVar1, pVar2) {} variables which are input parameters within a function should have p as a starting

• pces/def-func-exp-in-arg

function fxpression - var testFunct = fuction (pVar1, pVar2) {} variables which are input parameters within a function should have p as a starting

• pces/arr-func-exp-in-arg

arrow function expression - var testFunct = (pVar1, pVar2 ...) => {} variables which are input parameters within a function should have p as a starting

• pces/block-body-var

all block scope variable declaration have to start with _ (underscore)

• pces/set-state-obj-key-literal

all state object properties keys have to be identifiers setState({ sVar1: val }) and not literals setState({ "sVar1": val })

• pces/init-state-class-prop-key-literal

all state object properties keys have to be identifiers in class propery decalaration state = { sVar1: val } and not literals state = { "sVar1": val }

• pces/init-state-obj-key-literal

all state object properties keys have to be identifiers this.state = { sVar1: val } and not literals this.state = { "sVar1": val }

• pces/set-state-obj-prop-name

State variables should have s as a starting - setState({ sVar1: val })

• pces/init-state-obj-prop-name

State variables should have s as a starting - this.state = { sVar1: val }

• pces/init-state-class-prop

State variables should have s as a starting - state = { sVar1: val }