FlattenType

Since 1.2.0

Flatten type - remove extra intersections.

Signature

type FlattenType<T> = T extends infer U ? { [K in keyof U]: U[K] } : never

Parameters

Parameter	Description
T	The type to flatten

Description

Flattens intersection types and extra type wrappings into a single cohesive object type. Similar to Simplify but more focused on removing intersections.

Examples

Basic Usage

import type { FlattenType } from 'uni-types'

type Intersection = { a: string } & { b: number }
type Flattened = FlattenType<Intersection>
// { a: string; b: number }

With Nested Objects

import type { FlattenType } from 'uni-types'

type Nested = { x: string } & { y: number } & { z: boolean }
type Result = FlattenType<Nested>
// { x: string; y: number; z: boolean }

Related

• Simplify - Simplify intersection types
• DeepSimplify - Recursively simplify nested types