function guessEditor()

in packages/relay-devtools-core/src/launchEditor.js [77:108]

• 24 lines of code
• 8 McCabe index (conditional complexity)

function guessEditor(): Array<string> {
  // Explicit config always wins
  if (process.env.REACT_EDITOR) {
    return parse(process.env.REACT_EDITOR);
  }

  // Using `ps x` on OSX we can find out which editor is currently running.
  // Potentially we could use similar technique for Windows and Linux
  if (process.platform === 'darwin') {
    try {
      const output = execSync('ps x').toString();
      const processNames = Object.keys(COMMON_EDITORS);
      for (let i = 0; i < processNames.length; i++) {
        const processName = processNames[i];
        if (output.indexOf(processName) !== -1) {
          return [COMMON_EDITORS[processName]];
        }
      }
    } catch (error) {
      // Ignore...
    }
  }

  // Last resort, use old skool env vars
  if (process.env.VISUAL) {
    return [process.env.VISUAL];
  } else if (process.env.EDITOR) {
    return [process.env.EDITOR];
  }

  return [];
}