<p></p>
<p dir="auto">I know that we are using "var" everywhere, but I think, it would be great if we stick to "let" and "const", where using "var" is not absolute necessity. "let" and "const" are less vague about scopes and much bug-proof. There are some examples <a href="https://stackoverflow.com/questions/762011/what-is-the-difference-between-let-and-var" rel="nofollow">Stackoverflow link</a>. These are the lines you used "var" on:</p>
<p dir="auto">Line 129: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR129">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR129</a></p>
<p dir="auto">Line 179: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR179">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR179</a></p>
<p dir="auto">Line 301: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR301">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR301</a></p>
<p dir="auto">Line 316: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR316">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR316</a></p>
<p dir="auto">Line 456: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR456">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR456</a></p>
<p dir="auto">Line 469: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR469">https://github.com/openstreetmap/openstreetmap-website/pull/4904/files#diff-fdb9558c2ba79ddf9fbcb92594a8a8fa54abb1b3e25ce264de37951b428a958bR469</a></p>

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