requireVarDeclFirst

Requires var declaration to be on the top of an enclosing scope

Types: Boolean

Values:

• true specifies that var declarations must occur the top of a function scope.

Example

"requireVarDeclFirst": true

Valid for mode true

var x = 1,
    y = 2;

'use strict;'
var x = 1,
    y = 2;

var x = 1;
var y = 2;

var x = 1;
// comments
var y = 2;

var x = 1;
// comments
// comments 2
var y = 2;

const a = 1;
const b = 2;

var x = 1;
function y() {var z;};

var x = 1;
var y = function () {var z;};

var w = 1;
function x() {
 var y;
// comments
// comments 2
 var z;
};

var w = 1;
function x() {
 "use strict";
 var y;
};

var x = 1;
var y;
for (y = 0; y < 10; y++) {};

Invalid

var x;
x = 1;
var y = 2;

var w = 1;
function x() {var y;};
var z = 2;

var w = 1;
function x() {
 var y;
 y = 2;
 var z;
};

var a;
for(var count=0;count < 10;count++){}

var x;
for(var count=0;count < 10;count++){
 var y;
}