effect-io-ai

Package: effect
Module: Match

Match.any

Matches any value without restrictions.

When to use

Use to define an explicit catch-all pattern when the handler should receive the unmatched value.

Details

This predicate matches every input, including undefined, null, objects, primitives, and functions.

Gotchas

Match.any should usually be last because cases are checked in order and the first matching case wins.

Example (Matching any remaining value)

import { Match } from "effect"

const describeValue = Match.type<unknown>()
  .pipe(
    Match.when(Match.string, (str) => `String: ${str}`),
    Match.when(Match.number, (num) => `Number: ${num}`),
    Match.when(Match.boolean, (bool) => `Boolean: ${bool}`),
    Match.when(Match.any, (value) => `Other: ${typeof value}`),
    Match.exhaustive
  )

console.log(describeValue("hello"))
// Output: "String: hello"

console.log(describeValue(42))
// Output: "Number: 42"

console.log(describeValue([1, 2, 3]))
// Output: "Other: object"

console.log(describeValue(null))
// Output: "Other: object"

See

• defined for matching only non-nullish values
• orElse for providing a fallback after earlier cases

Signature

declare const any: SafeRefinement<unknown, any>

Source

Since v4.0.0