effect-io-ai

Package: effect
Module: Predicate

Predicate.isBoolean

A refinement that checks if a value is a boolean.

Example

import * as assert from "node:assert"
import { isBoolean } from "effect/Predicate"

assert.strictEqual(isBoolean(true), true)
assert.strictEqual(isBoolean(false), true)

assert.strictEqual(isBoolean("true"), false)
assert.strictEqual(isBoolean(0), false)

Signature

declare const isBoolean: (input: unknown) => input is boolean

Source

Since v2.0.0