Handling Passlock errors

Errors happen. Our safe API makes it easy to reason about potential errors:

Note

We’ve adopted this pattern so your IDE can identify potential errors and provide helpful autocomplete suggestions. It also makes it much harder for coding agents to hallucinate about errors.

import { Passlock, isPasskeyUnsupportedError } from "@passlock/browser";

const passlock = new Passlock({ tenancyId });

const result = await passlock.registerPasskey({ ... });

if (result.success) {
  // successful responses are exposed via the value property
  console.log(result.value);
}

if (result.failure) {
  // failures are exposed via the error property
  // use a type guard to narrow the error type
  if (isPasskeyUnsupportedError(result.error)) {
    // alternatively narrow using the `_tag` discriminator
  } else if (result.error._tag === "@error/DuplicatePasskey") {
    ...
  }
}

Property	Description
success	Indicates whether the operation was successful.
failure	Indicates whether the operation failed.
value	The resulting value of the operation, if successful.
error	The error that occurred, if the operation failed.
_tag	Discriminator, used to narrow the error type.