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Nest.js

Install Kilpi for Nest.js

Install and setup Kilpi

Install Kilpi and setup your Kilpi instance by following the quickstart guide. 

export const Kilpi = createKilpi({ ... })

Handle unauthorized errors from .assert()

The .assert() method throws an error when authorization is denied.

Since Nest.js supports throwing HTTP exceptions, handling unauthorized exceptions is easiest with a global onUnauthorizedAssert handler. 

export const Kilpi = createKilpi({
  // ...
  async onUnauthorizedAssert(decision)  {
    // Optionally customize behavior based on the decision
    switch (decision.reason) { ... }


    // By default, throw a HTTP 403 Forbidden exception
    throw new HttpException(decision.message, HttpStatus.FORBIDDEN);
  }
})