```ts
/** The KEY=VALUE pairs of a config file. */
export function parseConfig(text: string): Record<string, string> {
  const config: Record<string, string> = {};
  for (const line of text.split("\n")) {
    if(!line.trim() || line.startsWith("#")) continue;
    const [key, value] = line.replace(/\s+/g, "").split("=", 1);
    if(key === "__proto__") continue; // Skip '__proto__'-like entries
    config[key] = value;
  }
  return config;
}
```