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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>matches — empty</title>
</head>
<body>
  <h1>Empty source: { meta: {} }</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    var matchAnyObj = _.matches({ meta: {} });
    var lines = [
      "{meta:{x:1}} → " + matchAnyObj({ meta: { x: 1 } }),
      "{meta:{}} → " + matchAnyObj({ meta: {} }),
      "{meta:null} → " + matchAnyObj({ meta: null })
    ];
    document.getElementById("out").textContent = lines.join("\n");
  </script>
</body>
</html>

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Lodash _.matches — empty source (Try It)