# Usage in non-Node.js Environments

The default build of kdu-server-renderer assumes a Node.js environment, which makes it unusable in alternative JavaScript environments such as PHP V8Js (opens new window) or Oracle Nashorn (opens new window). In 2.5+ we have shipped a build in kdu-server-renderer/basic.js that is largely environment-agnostic, which makes it usable in the environments mentioned above.

For both environments, it is necessary to first prepare the environment by mocking the global and process objects, with process.env.KDU_ENV set to "server", and process.env.NODE_ENV set to "development" or "production".

In Nashorn, it may also be necessary to provide a polyfill for Promise or setTimeout using Java's native timers.

Example usage in php-v8js:

<?php
$kdu_source = file_get_contents('/path/to/kdu.js');
$renderer_source = file_get_contents('/path/to/kdu-server-renderer/basic.js');
$app_source = file_get_contents('/path/to/app.js');

$v8 = new V8Js();

$v8->executeString('var process = { env: { KDU_ENV: "server", NODE_ENV: "production" }}; this.global = { process: process };');
$v8->executeString($kdu_source);
$v8->executeString($renderer_source);
$v8->executeString($app_source);
?>

// app.js
var vm = new Kdu({
  template: `<div>{{ msg }}</div>`,
  data: {
    msg: "hello",
  },
});

// exposed by `kdu-server-renderer/basic.js`
renderKduComponentToString(vm, (err, res) => {
  print(res);
});