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Anastasia Hahanova

Anastasia Hahanova

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Code Block
/*eslint padding-line-between-statements: [
    "error",
    { blankLine: "always", prev: ["const", "let", "var"], next: "*"},
    { blankLine: "any",    prev: ["const", "let", "var"], next: ["const", "let", "var"]}
]*/

function foo() {
    var a = 0;
    var b = 0;

    bar();
}

function foo() {
    let a = 0;
    const b = 0;

    bar();
}

function foo() {
    const a = 0;
    const b = 0;

    bar();
}

comma-dangle

currently: 

Code Block
/*"only-multiline" allows (but does not require) trailing commas when the last element or property is 
in a different line than the closing ] or } and disallows trailing commas when the last element or property 
is on the same line as the closing ] or }*/
"comma-dangle": [
	"error",
	{
		"arrays": "only-multiline",
		"objects": "only-multiline",
		"imports": "only-multiline",
		"exports": "only-multiline",
		"functions": "only-multiline"
	}
]

...

Examples of incorrect code for this rule:

Code Block
/*eslint jsx-quotes: ["error", "prefer-double"]*/

<a b='c' />/ it's initialized and never reassigned.
let a = 3;
console.log(a);


let a;
a = 0;
console.log(a);

Examples of correct code for this rule:

Code Block


// using const.
const a = 0;

// it's never initialized.
let a;
console.log(a);

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