tag

tag<Tag>(tag): tag<Tag>

Defined in: node_modules/.pnpm/effect@3.14.8/node_modules/effect/dist/dts/Schema.d.ts:1394

Returns a property signature that represents a tag. A tag is a literal value that is used to distinguish between different types of objects. The tag is optional when using the make method.

Type Parameters

• Tag extends LiteralValue

Parameters

tag

Tag

Returns

tag<Tag>

Example

import * as assert from "node:assert"
import { Schema } from "effect"

const User = Schema.Struct({
  _tag: Schema.tag("User"),
  name: Schema.String,
  age: Schema.Number
})

assert.deepStrictEqual(User.make({ name: "John", age: 44 }), { _tag: "User", name: "John", age: 44 })

See

TaggedStruct

Since

3.10.0