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  <title>Lodash _.mapValues - shorthand</title>
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  <h1>_.mapValues - property shorthand</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      var employees = {
        e1: { name: "John",  age: 30, role: "admin" },
        e2: { name: "Alice", age: 25, role: "user"  },
        e3: { name: "Bob",   age: 35, role: "user"  }
      };
      var names    = _.mapValues(employees, "name");
      var ages     = _.mapValues(employees, "age");
      var isAdmin  = _.mapValues(employees, { role: "admin" });
      var enriched = _.mapValues(employees, function (emp) {
        return Object.assign({}, emp, { isSenior: emp.age > 30 });
      });
      var lines = [
        "'name'             : " + JSON.stringify(names),
        "'age'              : " + JSON.stringify(ages),
        "matcher role=admin : " + JSON.stringify(isAdmin),
        "function (isSenior): " + JSON.stringify(enriched)
      ];
      document.getElementById("out").textContent = lines.join("\n");
    })();
  </script>
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