<p></p>
<p><b>@tomhughes</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6197#discussion_r2208881812">config/initializers/tag2link.rb</a>:</p>
<pre style='color:#555'>> +TAG2LINK = lambda {
+  # the JSON data is an array with duplicate entries, which is not efficient for lookups.
+  # So, convert it to a hash and only keep the item with the best rank.
+  array = JSON.parse(Rails.root.join("node_modules/tag2link/index.json").read)
+
+  ranks = %w[deprecated normal preferred].freeze
+
+  output = {}
+
+  all_keys = array.map { |item| item["key"] }.uniq
+
+  all_keys.each do |key|
+    # for each key, find the item with the best rank
+    best_definition = array
+                      .select { |item| item["key"] == key }
+                      .max_by { |item| ranks.index(item["rank"]) }
</pre>
<p dir="auto">Well that's what I thought <code class="notranslate">preferred</code> was, as against <code class="notranslate">normal</code>, but in seems in some cases there is more than one that is <code class="notranslate">preferred</code>.</p>

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