https://github.com/micalevisk/nestjs-conditional-exception-filter

A tiny utility to support attribute-based exception filtering for NestJS apps.
https://github.com/micalevisk/nestjs-conditional-exception-filter

hacktoberfest nest nestjs npm-package

Last synced: 2 months ago
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A tiny utility to support attribute-based exception filtering for NestJS apps.

• Host: GitHub
• URL: https://github.com/micalevisk/nestjs-conditional-exception-filter
• Owner: micalevisk
• Created: 2023-06-17T20:35:42.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-06-22T12:25:18.000Z (7 months ago)
• Last Synced: 2024-10-01T15:55:02.844Z (3 months ago)
• Topics: hacktoberfest, nest, nestjs, npm-package
• Language: TypeScript
• Homepage: https://dev.to/micalevisk/nestjs-tip-fine-grained-exception-filtering-for-the-same-exception-class-5ha5
• Size: 369 KB
• Stars: 16
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# `nestjs-conditional-exception-filter`

[![npm version](https://img.shields.io/npm/v/nestjs-conditional-exception-filter.svg)](https://www.npmjs.com/package/nestjs-conditional-exception-filter)

[![npm downloads](https://img.shields.io/npm/dt/nestjs-conditional-exception-filter.svg)](https://www.npmjs.com/package/nestjs-conditional-exception-filter)

A helper package to allow creating exception filters based on conditions on the exception!

#### Usage

```bash

npm install nestjs-conditional-exception-filter

```

```ts

import { Catch, ExceptionFilter } from '@nestjs/common'

import { filter } from 'nestjs-conditional-exception-filter'

@Catch(

  filter({

    // Define for which instance this filter should be applied.

    // This is optional, so your filter no longer needs to work over class instances only

    for: YourErrorClass, 

    // And add your refined condition in this callback predicate function

    when: (err) => true

  })

)

export class YourFilter implements ExceptionFilter {

  // ...

}

```