Save console messages to logfile for mobile debugging

obsidian-debug-mobile.js

declare module "obsidian" {
    interface App {
        isMobile: boolean;
    }
}

// Call this method inside your plugin's `onLoad` function
function monkeyPatchConsole(plugin: Plugin) {
  if (!plugin.app.isMobile) {
    return;
  }
  
  const logFile = `${plugin.manifest.dir}/logs.txt`;
  const logs: string[] = [];
  const logMessages = (prefix: string) => (...messages: unknown[]) => {
    logs.push(`\n[${prefix}]`);
    for (const message of messages) {
      logs.push(String(message));
    }
    plugin.app.vault.adapter.write(logFile, logs.join(" "));
  };

  console.debug = logMessages("debug");
  console.error = logMessages("error");
  console.info = logMessages("info");
  console.log = logMessages("log");
  console.warn = logMessages("warn");
}

Thank you for this! I needed to debug a loading issue on mobile, so I did package this as a plugin:
https://github.com/velebit/obsidian-save-console-log
The plugin eliminates the check for isMobile, since you can just not enable the plugin if you don't want hot patching.