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Is there any typechecking library for JS that can warn of potentially "swallowed" promises? Does Flow do this?

• YCode 10y ago
  For debugging in Node I use: process.on("unhandledRejection", err => { console.error("Uncaught Promise Error: \n" + err.stack); console.error(err); });
  • mort96 10y ago
    That's better than letting it get swallowed, but in my experience is pretty terrible still, as it often just results in a stack trace where your code literally doesn't exist at all. In a somewhat big project, just having a vague error message without as much as a line number is hell.
• merkaloid 10y ago
  eslint has rules to make you return a value on every promise, whilst Node itself will complain about unhandled promise rejection