Kong/insomnia · error · Error

Unsupported platform

Error message

Unsupported platform

What it means

Default-branch guard in getAppDataDir: process.platform is neither darwin, win32, nor linux, so no platform-specific user-data directory formula applies. In practice only reachable on exotic/rare platforms or a broken runtime environment; the CLI cannot determine where app data should live.

Solutions

1. Run inso on macOS, Windows, or Linux
2. Build/run from source on a supported platform

When it happens

Trigger: Thrown at packages/insomnia-inso/src/util.ts:21 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Kong/insomnia@d9bb2b0142 (2026-08-26). Data as JSON: /api/errors/75caee26460bc882. Report an issue: GitHub.

Appendix: source

Thrown at packages/insomnia-inso/src/util.ts:21

/**
 * getAppDataDir returns the data directory for an Electron app,
 * it is equivalent to the app.getPath('userData') API in Electron.
 * https://www.electronjs.org/docs/api/app#appgetpathname
 */
export function getAppDataDir(app: string): string {
  switch (process.platform) {
    case 'darwin': {
      return path.join(homedir(), 'Library', 'Application Support', app);
    }
    case 'win32': {
      return path.join(process.env.APPDATA || path.join(homedir(), 'AppData', 'Roaming'), app);
    }
    case 'linux': {
      return path.join(process.env.XDG_DATA_HOME || path.join(homedir(), '.config'), app);
    }
    default: {
      throw new Error('Unsupported platform');
    }
  }
}

export const getDefaultProductName = (): string => {
  const name = process.env.DEFAULT_APP_NAME;
  if (!name) {
    throw new Error('Environment variable DEFAULT_APP_NAME is not set.');
  }
  return name;
};

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