Hyperlinkv0.8.0-beta.28

Predicate

Predicate.isNullfunctioneffect/Predicate.ts:829
(input: unknown): input is null

Checks whether a value is null.

When to use

Use when you need a Predicate guard for nullable values.

Details

Uses input === null.

Example (Guarding null values)

import { Predicate } from "effect"

const data: unknown = null

console.log(Predicate.isNull(data))
export function isNull(input: unknown): input is null {
  return input === null
}