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sern

Error handling

Error handling is important in any application, especially one which has a long lifetime of running.

Handling errors in command and event modules

To capture errors, enable the ‘error’ event in sern’s global event manager.

  • Directorysrc/
    • Directorycommands/
      • …
    • Directoryevents/
      • error.js
    • index.js
    • config.js
    • dependencies.d.ts
 
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import { EventType, eventModule } from '@sern/handler'
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export default eventModule({
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    type: EventType.Sern,
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    name: 'error',
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    execute: (err) => {
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        console.log('caught', err)
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    }
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})

If the error handler is not set, sern’s behavior is to crash the application. This respects node.js’s default behavior