`Credential.firstWhere()`

Get the first credential that matches a provided predicate.

Signature

Credential.firstWhere(pred: (Credential => Boolean)) => Credential | Null

Gets the first credential, represented as a Credential document, that matches a provided predicate function.

A credential associates a password with an identity document. You can use credentials and the credential.login() method to create tokens as part of an end-user authentication system.

Parameter Type Required Description

Parameter	Type	Required	Description
pred	Predicate function	Yes	Anonymous predicate function that: Accepts a `Credential` document as its only argument. Supports shorthand-syntax. Returns a Boolean value. The method returns the first `Credential` document for which the predicate returns true.

pred

Yes

Accepts a Credential document as its only argument. Supports shorthand-syntax.
Returns a Boolean value.

The method returns the first Credential document for which the predicate returns true.

One of:

Type Description

Type	Description
Credential	First `Credential` document that matches the predicate.
Null	No `Credential` document matches the predicate.

First Credential document that matches the predicate.

No Credential document matches the predicate.

Credential.firstWhere(.document == Customer.byId("111"))

{
  id: "371153420791316514",
  coll: Credential,
  ts: Time("2099-07-24T17:05:34.890Z"),
  document: Customer("111")
}