Disallow or enforce spaces inside of single line blocks. (block-spacing)

This rule is for spacing style within single line blocks.

Fixable: This rule is automatically fixable using the --fix flag on the command line.

Rule Details

This rule is aimed to flag usage of spacing inside of blocks. This rule has a option, its value is "always" or "never".

"always" (by default) enforces one or more spaces.
"never" disallows space(s).

always

{
  "block-spacing": [2, "always"]
}

The following patterns are considered problems:

/*eslint block-spacing: 2*/
function foo() {return true;} /*error Requires a space after "{".*/ /*error Requires a space before "}".*/
if (foo) { bar = 0;}          /*error Requires a space before "}".*/

The following patterns are not considered problems:

/*eslint block-spacing: 2*/

function foo() { return true; }
if (foo) { bar = 0; }

never

{
  "block-spacing": [2, "never"]
}

The following patterns are considered problems:

/*eslint block-spacing: [2, "never"]*/

function foo() { return true; } /*error Unexpected space(s) after "{".*/ /*error Unexpected space(s) before "}".*/
if (foo) { bar = 0;}            /*error Unexpected space(s) after "{".*/

The following patterns are not considered problems:

/*eslint block-spacing: [2, "never"]*/

function foo() {return true;}
if (foo) {bar = 0;}

When Not to Use It

If you don’t want to be notified about spacing style inside of blocks, you can safely disable this rule.

Version