JS.BASE.SPACE.INFIX.OPS

Require spacing around infix operators

While formatting preferences are very personal, a number of style guides require spaces around operators, such as:

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var sum = 1 + 2;

Proponents of this rule believe that it makes code easier to read and can more easily highlight potential errors, such as:

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var sum = i+++2;

While this is valid JavaScript syntax, it is hard to determine what the author intended.

This rule is aimed at ensuring there are spaces around infix operators.

This rule accepts a single options argument with the following defaults:

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"space-infix-ops": ["error", { "int32Hint": false }]

Set the int32Hint option to true (default is false) to allow write a|0 without space.

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var foo = bar|0; // `foo` is forced to be signed 32 bit integer

Examples of incorrect code for this rule:

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/*eslint space-infix-ops: "error"*/
/*eslint-env es6*/

a+b

a+ b

a +b

a?b:c

const a={b:1};

var {a=0}=bar;

function foo(a=0) { }

Examples of correct code for this rule:

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/*eslint space-infix-ops: "error"*/
/*eslint-env es6*/

a + b

a       + b

a ? b : c

const a = {b:1};

var {a = 0} = bar;

function foo(a = 0) { }

You can turn this rule off if you are not concerned with the consistency of spacing around infix operators.