scoping issues with const in a loop

I’m not sure if const is actually supported, but it does not error (however results are not expected).

when using const in a for…of loop in ejs the first value is all that is used for the rest of the iterations.

sample code:

test.js -

var ejs = require('ejs');

console.log(ejs.render(require('fs').readFileSync('test.ejs', 'utf8'), {
  arr: [{
    name: 'apples',
    color: 'red'
  }, {
    name: 'apples',
    color: 'green'
  }, {
    name: 'banana',
    color: 'yellow'
  }]
}));

test.ejs -

<% for( var foo of arr ) { %>
    <div><%= foo.name %> - <%= foo.color %></div>
<% } %>

<% for( const bar of arr ) { %>
    <div><%= bar.name %> - <%= bar.color %></div>
<% } %>

result -

<div>apples - red</div> <div>apples - green</div> <div>banana - yellow</div> <div>apples - red</div> <div>apples - red</div> <div>apples - red</div>

If this is expected behavior (or const is outright not supported and I missed that note) I apologize for wasting everyones time. I haven’t tried let because node doesn’t like it outside of strict yet (actually throws an error).

using ejs 2.4.1

[rlemon]

yes it seems to be a node issue. My apologies. v5.2.0 also suffers from it, v6.0.0 is working as expected.

My bad.

[rlemon]

good to know, this was a kick in the butt to stop being lazy and upgrade my node version.