MeshChatX/scripts/patch-electron-builder-fs.cjs

#!/usr/bin/env node

const fs = require("node:fs");
const path = require("node:path");

const root = path.join(__dirname, "..");
const targets = [path.join(root, "node_modules", "app-builder-lib", "out", "binDownload.js")];

const preamble = `const __ebFsConstants = (() => {
  try {
    const c = require("fs").constants;
    if (c && c.R_OK != null) {
      return c;
    }
  } catch (_) {}
  try {
    const c = require("node:fs").constants;
    if (c && c.R_OK != null) {
      return c;
    }
  } catch (_) {}
  return { R_OK: 4, W_OK: 2, X_OK: 1 };
})();

`;

function patchBinDownload(source) {
    if (source.includes("__ebFsConstants")) {
        return source;
    }
    let next = preamble + source;
    next = next.replace(/fs_1\.constants\.R_OK/g, "__ebFsConstants.R_OK");
    next = next.replace(/fs_1\.constants\.W_OK/g, "__ebFsConstants.W_OK");
    next = next.replace(/fs\.constants\.R_OK/g, "__ebFsConstants.R_OK");
    next = next.replace(/fs\.constants\.W_OK/g, "__ebFsConstants.W_OK");
    return next;
}

for (const target of targets) {
    if (!fs.existsSync(target)) {
        continue;
    }
    const original = fs.readFileSync(target, "utf8");
    const patched = patchBinDownload(original);
    if (patched !== original) {
        fs.writeFileSync(target, patched);
        console.log(`patched ${path.relative(root, target)}`);
    }
}