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<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Lodash reduce — map</title>
</head>
<body>
  <h1>Lodash _.reduce — rows to map</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      document.getElementById("out").textContent = JSON.stringify(
        _.reduce(
          [
            { key: "usd", rate: 1 },
            { key: "eur", rate: 0.92 }
          ],
          function (acc, row) {
            acc[row.key] = row.rate;
            return acc;
          },
          {}
        )
      );
    })();
  </script>
</body>
</html>

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