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buffer: Reverting change in let to fix regressions in buffer operations #5819

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buffer: Reverting change in let to fix regressions in buffer operations #5819

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7 changes: 4 additions & 3 deletions lib/buffer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,7 @@ function fromString(string, encoding) {
function fromArrayLike(obj) {
const length = obj.length;
const b = allocate(length);
for (let i = 0; i < length; i++)
for (var i = 0; i < length; i++)
b[i] = obj[i] & 255;
return b;
}
Expand Down Expand Up @@ -276,6 +276,7 @@ Buffer.isEncoding = function(encoding) {


Buffer.concat = function(list, length) {
var i;
if (!Array.isArray(list))
throw new TypeError('"list" argument must be an Array of Buffers');

Expand All @@ -284,15 +285,15 @@ Buffer.concat = function(list, length) {

if (length === undefined) {
length = 0;
for (let i = 0; i < list.length; i++)
for (i = 0; i < list.length; i++)
length += list[i].length;
} else {
length = length >>> 0;
}

var buffer = Buffer.allocUnsafe(length);
var pos = 0;
for (let i = 0; i < list.length; i++) {
for (i = 0; i < list.length; i++) {
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Just wondering why no var here. Looks like it was there previously 2ac47f8. At this point since its a jslint error all I can think of is that we have tightened up the lint rules ?

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So this was to address a lint issue.

Really the var i in the for loop before should be declared outside of the if statement, so have added another commit to fix this,

var buf = list[i];
if (!Buffer.isBuffer(buf))
throw new TypeError('"list" argument must be an Array of Buffers');
Expand Down