PathLength

Since 1.1.0

Get the number of segments in a path.

Signature

type PathLength<P extends string> = P extends ''
  ? 0
  : P extends `${string}.${infer Rest}`
    ? Increment<PathLength<Rest>>
    : 1

Parameters

Parameter	Description
P	The path string

Examples

Basic Usage

import type { PathLength } from 'uni-types'

type A = PathLength<'a.b.c'>   // 3
type B = PathLength<'single'>  // 1
type C = PathLength<''>        // 0

Conditional Logic

type ShallowPath<P extends string> = PathLength<P> extends 1 | 2
  ? P
  : never

Related

• ParentPath - Get parent path
• PathLeaf - Get last segment