JS.BASE.ARROW.SPACING
Enforce consistent spacing before and after the arrow in arrow functions
This rule normalize style of spacing before/after an arrow function's arrow(=>).
/*eslint-env es6*/
// { "before": true, "after": true }
(a) => {}
// { "before": false, "after": false }
(a)=>{}
Rule Details
This rule takes an object argument with before and after properties, each with a Boolean value.
The default configuration is { "before": true, "after": true }.
true means there should be one or more spaces and false means no spaces.
Examples of incorrect code for this rule with the default { "before": true, "after": true } option:
/*eslint arrow-spacing: "error"*/
/*eslint-env es6*/
()=> {};
() =>{};
(a)=> {};
(a) =>{};
a =>a;
a=> a;
()=> {'\n'};
() =>{'\n'};
Examples of correct code for this rule with the default { "before": true, "after": true } option:
/*eslint arrow-spacing: "error"*/
/*eslint-env es6*/
() => {};
(a) => {};
a => a;
() => {'\n'};
Examples of incorrect code for this rule with the { "before": false, "after": false } option:
/*eslint arrow-spacing: ["error", { "before": false, "after": false }]*/
/*eslint-env es6*/
() =>{};
(a) => {};
()=> {'\n'};
Examples of correct code for this rule with the { "before": false, "after": false } option:
/*eslint arrow-spacing: ["error", { "before": false, "after": false }]*/
/*eslint-env es6*/
()=>{};
(a)=>{};
()=>{'\n'};
Examples of incorrect code for this rule with the { "before": false, "after": true } option:
/*eslint arrow-spacing: ["error", { "before": false, "after": true }]*/
/*eslint-env es6*/
() =>{};
(a) => {};
()=>{'\n'};
Examples of correct code for this rule with the { "before": false, "after": true } option:
/*eslint arrow-spacing: ["error", { "before": false, "after": true }]*/
/*eslint-env es6*/
()=> {};
(a)=> {};
()=> {'\n'};