Build Bundle

1/* Build assets/glass-main.js from assets/glass-main.mjs.
2   The source uses top-level await (HDR + matcap + font loads), which esbuild
3   cannot emit in the classic-IIFE format that HyperFrames sub-compositions
4   require, so the body is wrapped in an async IIFE with the imports hoisted
5   before bundling. Run `npm install esbuild three` first (three 0.185.1 or
6   later — HDRLoader is not in older three.js releases). */
7import { readFileSync, writeFileSync, unlinkSync } from "node:fs";
8import { execFileSync } from "node:child_process";
9
10const SRC = "assets/glass-main.mjs";
11const TMP = "assets/.glass-main.entry.mjs";
12const OUT = "assets/glass-main.js";
13
14const src = readFileSync(SRC, "utf8");
15const lines = src.split("\n");
16const imports = [];
17const body = [];
18for (const line of lines) {
19  if (/^\s*import\s/.test(line)) imports.push(line.trim());
20  else body.push(line);
21}
22writeFileSync(TMP, `${imports.join("\n")}\n(async () => {\n${body.join("\n")}\n})();\n`);
23try {
24  execFileSync(
25    "npx",
26    [
27      "esbuild",
28      TMP,
29      "--bundle",
30      "--format=iife",
31      "--minify",
32      `--outfile=${OUT}`,
33      "--alias:three/addons=three/examples/jsm",
34    ],
35    { stdio: "inherit" },
36  );
37} finally {
38  unlinkSync(TMP);
39}
40console.log("built", OUT);