tests/wasm-check.html

<html>
  <body>
    <pre id="output"></pre>
    <script type="module"> 
      import OpenSCAD from "../../build/openscad.js";
      
      const instance = await OpenSCAD({ noInitialRun: true });
      
      instance.FS.mkdir("/fonts");
      instance.FS.writeFile("/fonts/fonts.conf",
        `<?xml version="1.0" encoding="UTF-8"?>
          <!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
          <fontconfig>
        </fontconfig>`);
      instance.FS.writeFile("/fonts/LiberationSans-Regular.ttf",
        new Uint8Array(await (await fetch("../fonts/Liberation-2.00.1/ttf/LiberationSans-Regular.ttf")).arrayBuffer()));

      instance.FS.writeFile("lib.scad", `
        test_text = "Hello";
      `);
      instance.FS.writeFile("input.scad", `
        include <lib.scad>;
        $fn=64;
        difference() {
            linear_extrude(height = 20, center=true)
                text(test_text, size=10, halign="center", valign="center", font="Liberation Sans");
            sphere(r=10);
        }
      `);
      
      const code = instance.callMain(['input.scad', "--backend=manifold", "-o", "out.stl"]);
      if (code !== 0) throw new Error(`Exit code: ${code}`);

      const output = document.getElementById("output");
      output.innerText = instance.FS.readFile("out.stl", { encoding: "utf8" });
    </script>
  </body>
</html>