feat/typesafe - Introduce no-await-without-trycatch

[liangyuanruo]

Problem

Asynchronous calls in code may result in failure, but the code may not handle the failure case. This can lead to a lack of error messages in the UI, or UnhandledPromiseRejection errors and 504 Gateway Timeouts on the server.

Solution

typesafe/no-await-without-trycatch

This new ESLint rule helps to warn developers of the possibility of the failure of an async call, by providing visual feedback for situations where an ES2017 await expression is not used within a try-catch block.

As this rule is meant to be used as a hint without being overly intrusive, the linting rules have been set to warn for non-test code and disabled for test code entirely.

Features:

• Visual feedback when using await outside of a try-catch block

Screenshots