fix-links.mjs

import { execSync } from "child_process";
import { lstatSync, readdirSync, statSync } from "fs";
import path from "path";

export const fixMacOsLinks = () => {
  const files = readdirSync("ffmpeg/remotion/lib").filter((f) =>
    f.endsWith(".dylib")
  );
  for (const file of files) {
    const isSymbolicLink = lstatSync(
      path.join(process.cwd(), `ffmpeg/remotion/lib/${file}`)
    ).isSymbolicLink();

    if (isSymbolicLink) {
      continue;
    }

    const sharedNames = execSync(`otool -L ${file}`, {
      cwd: "ffmpeg/remotion/lib",
    });
    const matches = sharedNames.toString().match(/remotion\/lib\/(.*).dylib/g);
    if (!matches) {
      continue;
    }
    for (const match of matches) {
      execSync(
        "install_name_tool -id " +
          match.replace("remotion/lib/", "") +
          " " +
          match,
        {
          cwd: "ffmpeg",
        }
      );
      execSync(
        `install_name_tool -change ${match} ${match.replace(
          "remotion/lib/",
          ""
        )} remotion/lib/${file}`,
        { cwd: "ffmpeg" }
      );
    }
  }

  const bins = readdirSync("ffmpeg/remotion/bin");
  for (const bin of bins) {
    const links = execSync(`otool -L ${bin}`, {
      cwd: "ffmpeg/remotion/bin",
    })
      .toString()
      .match(/remotion\/lib\/(.*).dylib/g);

    if (!links) {
      continue;
    }
    for (const link of links) {
      execSync(
        `install_name_tool -change ${link} ${link.replace(
          "remotion/lib/",
          ""
        )} remotion/bin/${bin}`,
        { cwd: "ffmpeg" }
      );
    }
  }
};