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Use this API to listen for unhandled Promise rejections. The callback triggers when a Promise without a rejection handler is rejected.

Parameters

Callback Parameters

Code Example

Basic Usage

Error Logging

Development Debugging

Common Causes

Unhandled Promise rejections typically occur when:
Always add .catch() handlers to your Promises or use try/catch with async/await to prevent unhandled rejections.

my.offUnhandledRejection

Stop listening for unhandled rejections

my.onError

Listen for JS errors