DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
42 lines
1.4 KiB
Text
42 lines
1.4 KiB
Text
import type {IsTuple} from './is-tuple';
|
|
import type {UnknownArray} from './unknown-array';
|
|
import type {IfAny} from './if-any';
|
|
|
|
/**
|
|
Transforms a tuple into an object, mapping each tuple index to its corresponding type as a key-value pair.
|
|
|
|
Note: Tuple labels are [lost in the transformation process](https://stackoverflow.com/a/70398429/11719314). For example, `TupleToObject<[x: number, y: number]>` produces `{0: number; 1: number}`, and not `{x: number; y: number}`.
|
|
|
|
@example
|
|
```
|
|
type Example1 = TupleToObject<[number, string, boolean]>;
|
|
//=> { 0: number; 1: string; 2: boolean }
|
|
|
|
// Tuples with optional indices
|
|
type Example2 = TupleToObject<[number, string?, boolean?]>;
|
|
//=> { 0: number; 1?: string; 2?: boolean }
|
|
|
|
// Readonly tuples
|
|
type Example3 = TupleToObject<readonly [number, string?]>;
|
|
//=> { readonly 0: number; readonly 1?: string }
|
|
|
|
// Non-tuple arrays get transformed into index signatures
|
|
type Example4 = TupleToObject<string[]>;
|
|
//=> { [x: number]: string }
|
|
|
|
// Tuples with rest elements
|
|
type Example5 = TupleToObject<[number, string, ...boolean[]]>;
|
|
//=> { [x: number]: number | string | boolean; 0: number; 1: string }
|
|
|
|
// Tuple labels are not preserved
|
|
type Example6 = TupleToObject<[x: number, y: number]>;
|
|
//=> { 0: number; 1: number }
|
|
```
|
|
|
|
@category Array
|
|
*/
|
|
export type TupleToObject<TArray extends UnknownArray> = IfAny<TArray, any, {
|
|
[
|
|
Key in keyof TArray as Key & (`${number}` | (IsTuple<TArray> extends true ? never : number))
|
|
]: TArray[Key];
|
|
}>;
|