Empty robots.txt file created when building on Windows

[sebthom]

Running pnpm build creates an empty robots.txt file on Windows and logs this error:

Error reading file size: Error: ENOENT: no such file or directory, stat 'D:\D:\projects\website\dist\robots.txt'
    at async Object.stat (node:internal/fs/promises:1032:18)
    at async getFileSizeInKilobytes (file:///D:/projects/website/node_modules/.pnpm/astro-robots@2.3.0_astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-e_tp2hgc74ezatvlr2qm3gadxkx4/node_modules/astro-robots/dist/index.mjs:154:21)
    at async astro:build:done (file:///D:/projects/website/node_modules/.pnpm/astro-robots@2.3.0_astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-e_tp2hgc74ezatvlr2qm3gadxkx4/node_modules/astro-robots/dist/index.mjs:228:26)
    at async withTakingALongTimeMsg (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/integrations/hooks.js:25:18)
    at async runHookBuildDone (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/integrations/hooks.js:428:7)
    at async AstroBuilder.build (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/core/build/index.js:159:5)
    at async AstroBuilder.run (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/core/build/index.js:182:7)
    at async build (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/core/build/index.js:51:3)
    at async build (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/cli/build/index.js:24:3)
    at async runCommand (file:///D:/projects/website/node_modules/.pnpm/astro@4.16.17_@types+node@22.10.2_lightningcss@1.27.0_rollup@4.28.1_sass-embedded@1.81.0_sass_4ofjof7rilz4bhwqyz7ldguqge/node_modules/astro/dist/cli/index.js:147:7) {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'stat',
  path: 'D:\\D:\\projects\\website\\dist\\robots.txt'
}
18:41:47 [astro-robots] `robots.txt` (0KB) created at `dist` in 0ms

D:\\D:\\ looks wrong.

I am using a config like this:

    robots({
      sitemap: [
        "https://example.com/sitemap-index.xml"
      ],
      policy: [
        {
          userAgent: "*",
          disallow: ["/"],
        },
        {
          userAgent: [
            "Applebot",
            "bingbot",
            "DuckDuckBot",
            "Googlebot",
            "Qwantify",
          ],
          allow: ["/"],
          disallow: [
            "/login",
            "/admin",
          ],
          crawlDelay: 5,
        },
      ]
    })

I saw you are using this in the code const filePath = fileUrl.pathname; I think this is an unsafe conversion and you should use:

import { fileURLToPath } from "url";
const filePath = fileURLToPath(fileUrl);