caught
v0.1.3
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Avoids UnhandledPromiseRejectionWarning and PromiseRejectionHandledWarning
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node caught
This module lets you attach empty rejcetion handlers to promises to avoid certain warnings that will be fatal errors in next versions of Node.
Since version 0.1.0 it supports TypeScript thanks to Wil Lee.
For a version for Deno, see: https://deno.land/x/caught
More info
Doing something like this:
var p = Promise.reject(0);
setTimeout(() => p.catch(e => console.error('caught')), 0);
will generate a lot of helpful warnings:
(node:13548) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): 0
(node:13548) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:13548) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 1)
This module lets you write:
var p = caught(Promise.reject(0));
setTimeout(() => p.catch(e => console.error('caught')), 0);
to ignore those warnings on a per-promise basis.
Use at your own risk.
Background
For more info see this answer on Stack Overflow:
Installation
To use in your projects:
npm install caught --save
Usage
var caught = require('caught');
var p = caught(Promise.reject(0));
Note that it is not the same as writing:
var p = Promise.reject(0).catch(() => {});
which would not return the original promise and wouldn't let you add catch
handlers later.
Issues
For any bug reports or feature requests please post an issue on GitHub.
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License
MIT License (Expat). See LICENSE.md for details.