Tips for organizing your library within a self-contained function using emscripten

I have developed a C++ library using Embind and Emscripten.

In addition to the library, I have included some manually written JS code using --pre-js

While the library is working fine, I want to restructure the code as follows:

var MYLIB = (function(){
  // ... Original Code ...
  return Module;
})();

This way, the code will not clutter the global namespace, allowing for better optimizations by code minifiers.

Is there a built-in functionality within emcc for achieving this?
Please note that the library is meant to run only in web browsers, not in Node.js.

Answer №1

If you're searching for it, the key lies in the MODULARIZE and EXPORT_NAME options. To find more information, refer to the documentation in settings.js.

A snippet from the file reads as follows:

// By default, all code is emitted straightforwardly into the output
// .js file. This means that when loaded in a script tag on a website,
// it will use the global scope. However, setting MODULARIZE will change this behavior to emit:
//
// var EXPORT_NAME = function(Module) {
// Module = Module || {};
// // .. all code generated by emscripten ..
// return Module;
// };
//
// where EXPORT_NAME corresponds to the option of the same name

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