handle-rejection
💀 Handle unhandled rejections
Built in single handlers
; // console.error(error)
Name | Details |
---|---|
console | console.error |
exit | process.exit |
throw | throws error |
collect | Prints all errors before process exists |
Combine handlers
'console' 'collect';
This one is a good combination for long test suits (see below) †
Custom handlers
const errobj = ; ;
Combined handlers: built in and custom
Raven // custom 'exit' // built in;
† Example for a combination of "console" and "collect" in a testing environment
> mocha
some function
✓ Should be okay
TypeError: Cannot read property 'ok' of undefined
at ok (/workspace/package/spec.js:21:11)
at tryCatch (/workspace/package/node_modules/regenerator-runtime/runtime.js:45:40)
at Generator.invoke [as _invoke] (/workspace/package/node_modules/regenerator-runtime/runtime.js:271:22)
at Generator.prototype.(anonymous function) [as next] (/workspace/package/node_modules/regenerator-runtime/runtime.js:97:21)
at asyncGeneratorStep (/workspace/package/spec.js:14:103)
at _next (/workspace/package/spec.js:16:194)
at process._tickCallback (internal/process/next_tick.js:68:7)
some other function
✓ Should success
✓ Should also success
✓ Should really work
another bulk of tests
✓ Should be fine
✓ Should pass the test
6 passing (110ms)
╭─────────────────────────────╮
│ Unhandled Rejection Summary │
╰─────────────────────────────╯
❗️ Rejection 1:
TypeError: Cannot read property 'ok' of undefined
at ok (/workspace/package/spec.js:21:11)
at tryCatch (/workspace/package/node_modules/regenerator-runtime/runtime.js:45:40)
at Generator.invoke [as _invoke] (/workspace/package/node_modules/regenerator-runtime/runtime.js:271:22)
at Generator.prototype.(anonymous function) [as next] (/workspace/package/node_modules/regenerator-runtime/runtime.js:97:21)
at asyncGeneratorStep (/workspace/package/spec.js:14:103)
at _next (/workspace/package/spec.js:16:194)
at process._tickCallback (internal/process/next_tick.js:68:7)