File handle destructor: https://nodejs.org/api/fs.html#filehandleclose https://nodejs.org/api/fs.html#filehandleclose WebSocket's destructor: https://developer

File handle destructor: https://nodejs.org/api/fs.html#filehandleclose https://nodejs.org/api/fs.html#filehandleclose WebSocket's destructor: https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/close https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/c... HTTP server's destructor: https://nodejs.org/api/http.html#serverclosecallback https://nodejs.org/api/http.html#serverclosecallback Etc etc etc. You're right that JS/C/Go don't have language features called destructors, but they have a whole bunch of types with ad-hoc destructor functions which you have to remember to call if you want to avoid leaking resources.