<script src="path/to/zpm.js"></script>
<script src="path/to/a.js"></script>
<script src="path/to/b.js"></script>
<script src="path/to/c.js"></script>

<script>
var A = zpmjs.require("path/to/a");
var B = zpmjs.require("path/to/b");
var C = zpmjs.require("path/to/c");
</script>